How to deal with the exhaust gas of our pharmaceutical factory?

Pharmaceutical factory exhaust gas mainly contains a large amount of acid and alkali waste gas and foul odor, such as direct emission will cause great pollution to the surrounding air, waste gas can only be discharged when it reaches the secondary standard value in the "odor pollutant emission standard" (GB14554-93), thatWhat are the waste gas treatment methods in pharmaceutical factories?

For the organic waste gas treatment method of pharmaceutical factory, catalytic combustion, low-temperature plasma purifier + UV photolysis equipment condensation, spray tower washing acid and alkali waste gas, adsorption and desorption treatment, biofilm method, etc.

Low-temperature plasma purification:

The principle of this method is that when the applied voltage reaches the discharge voltage of the gas, the gas is broken down, resulting in a mixture of electrons, various ions, atoms, and free radicals.

Low-temperature plasma equipment mainly uses pollutants and active particles such as high-energy electrons and free radicals in the exhaust gas to decompose in a short period of time, and finally achieve the purpose of degrading pollutants.

The exhaust gas treatment process is roughly as follows: the exhaust gas source enters the spray tower through the air duct (reacts with the high-efficiency deodorant desulfurization in the spray tower) The exhaust gas will remove water when it enters the water-gas separator and enters the low-temperature plasma purifier + UV photolysis equipment.

The organic waste gas is then treated to produce carbon dioxide and water, and the final gas is discharged into the atmosphere through the exhaust pipe.

The operation of the equipment is simple, the process is mature, and it is suitable for the treatment of exhaust gas with large air volume and high-speed flow, which is one of the reasons why this method has developed rapidly in recent years.

Pharmaceutical plant exhaust gas treatment usually requires the following steps:

Exhaust gas collection: The generated exhaust gas is collected through ventilation ducts, exhaust pipes, etc.

Separation: Separate the solid and liquid particles in the exhaust gas through separation equipment, such as sedimentation tanks, filters, etc.

Purification: Purify the harmful gases in the exhaust gas. For example, adsorbents, catalysts, oxidants, etc. are used to adsorb, catalyze, and oxidize harmful gases.

It should be noted that the waste gas treatment of pharmaceutical factories needs to be treated according to the waste gas composition and emission standards, and needs to be operated and monitored by professional environmental protection companies or technicians.

Hello landlord. Pharmaceutical factory exhaust gas can be treated with UV photolysis and activated carbon.

It can also be treated with catalytic combustion. See how big your volume is.

Different waste gases are treated with different processes.

Most of the waste gas of the pharmaceutical factory are hydrogen sulfide, ammonia, methyl mercaptan and other odorous substances, it is recommended to install a spray tower device, the exhaust gas enters the tower from the bottom of the tower mouth of the production workshop, the circulating water in the tower will circulate the exhaust gas and dust in the water, and the circulating water will also produce new odor after a long time of use, so it is recommended to use plant deodorant for this waste gas, and pour the plant deodorant directly for the first time, 3 kg per cubic meter, and then pour 1 kg per day into the circulating water, so that it can be quickly deodorized.

Jiangsu Shanmiao's VOC treatment equipment is good, the main quality is leveraged, our company has used it for three years, and there has been no problem.

1) When treating exhaust gas by physical method. It does not change the chemical properties of the exhaust gas substance, but only masks and dilutes its odor with a substance, or transfers the exhaust gas substance from the gas phase to the liquid phase or the solid phase. Common methods include BAI masking, dilution, condensation and adsorption.

2) Chemical method: Chemical method uses another substance to carry out chemical reaction with the waste gas substance to change the chemical structure of the waste gas substance. Transform it into a non-toxic, odorless, or less odorous substance. Common methods include combustion method, oxidation method and chemical DU absorption method (acid-base neutralization method) and so on.

3) Biological method: Biological method to purify inorganic or organic waste gas, which is sufficient to generate on the basis of mature microbial treatment of wastewater. Bio-decontamination is essentially an oxidative decomposition process: active microorganisms attached to porous, humid media use inorganic or organic cyanosis in the exhaust gas as energy or nutrients for their life activities.

Converted into simple inorganic substances or cellular constituent substances.

4) Physicochemical method: Physicochemical method is mainly based on the characteristics of R standard waste gas, using a series of physical and chemical treatment combined with Zhi method* using some special treatment means and unconventional treatment methods to further treat it, in order to achieve high removal rate and harmless R. At present, the simple physical and chemical methods used mainly include acid-base absorption, chemical adsorption, DAO oxidation and catalytic combustion.

The waste gas of the chemical plant is used to create material wealth for the country and reduce pollution by using the raw materials, intermediates, products and by-products lost in the production process. Therefore, the purification and improvement of chemical waste gas treatment is an important technical measure for enterprises to tap their internal potential, increase production and save, turn harm into profit, turn waste into treasure, eliminate pollution and protect the atmospheric environment. There are a variety of methods for separating hazardous substances from chemical exhaust gases.

For example, cryolite and alumina are produced from the fluorine-containing waste gas of phosphate fertilizer plant, coke oven gas is used from coke oven exhaust gas, sulfur resources are used from flue gas, and the desulfurization technology of natural gas is improved to achieve the purpose of sulfur resources.

On the other hand, for the substances with low content of some components in the exhaust gas, which do not have the best value, but will cause air pollution, it is necessary to strengthen the research on the exhaust gas purification technology. For example, in the process of fuel combustion and some production and processing, it is inevitable to emit harmful dust into the atmosphere, in this case, certain dust removal measures should be taken to deal with it. For example, in petrochemical production, carcinogenic, teratogenic and mutagenic aromatic hydrocarbon compounds are often discharged, the content of these substances is generally not very high, there is not much value, but if it is discharged arbitrarily, it will bring great harm to people's life safety and health, and effective waste gas treatment measures should be taken to ensure that it meets the emission standards.

Hello landlord, according to the questions you raised, the following will be answered in detail for you:

The toxic and harmful gases discharged in chemical production often contain a variety of pollutants, its physical and chemical properties are complex, and the toxicity is not the same, if not treated, it will seriously pollute the environment and affect human health.

Principles of chemical waste gas treatment

Gaseous pollutants such as SO2, NOX, CO, NH3, H2O, organic waste gases. The physical and chemical properties of pollutants are used to treat them by absorption, adsorption, combustion, catalytic conversion and other methods.

Particulate pollutants such as dust, soot, fog droplets, and dust mist. Taking advantage of its large mass, it is separated by the action of external force, which is usually called dust removal.

General treatment methods for chemical waste gases

The choice of waste gas treatment method for a chemical plant depends on the chemical and physical properties of the exhaust gas, its concentration, emissions, emission standards, and the economic value of its reuse as a feedstock or by-product. The general methods of chemical waste gas treatment are: absorption method, adsorption method, thermal decomposition method, incineration and catalytic combustion method.

What are the waste gas treatment methods in chemical plants?

There are three main methods for treating waste gas in chemical plants:

1. Absorption method: In the treatment of organic compounds in chemical waste gas, the chemical absorption method is mostly used.

2. Adsorption method: The adsorption method can be applied to purify the waste gas containing solvents or organic matter emitted from chemical production such as coatings, paints, plastics, rubber, etc., and activated carbon is usually used as an adsorbent.

3. Incineration method: organic pollutants or odorous substances in the waste gas of organic chemical production can be treated by direct combustion method or catalytic combustion method.

Direct combustion can be done with flares or incinerators; The flare combustion method is used to treat the exhaust gas containing enough combustibles, and the calorific value of the exhaust gas needs to be more than 1925kJ m3, and the flare is an atmospheric burner, and the combustion efficiency is low. If a forced air burner is used similar to a boiler or industrial furnace, the combustion effect is better than that of a flare. Direct combustion is usually carried out at about 1000 °C, and the products CO2, N2 and water vapor are completely burned.

Hope it helps!

Hello. The treatment of waste gas from chemical plants is still relatively strict. First of all, it is necessary to know the substances and content in the exhaust gas.

in order to be processed. To put it intuitively, it is necessary to know what products cause the exhaust gas, and to test the concentration and substance of the exhaust gas. In this way, you will know how to dispose of the waste.

Exhaust gases from chemical plants are generally not easy to deal with. It is necessary to have a qualified enterprise and a team with experience in dealing with it. Otherwise, it will be very troublesome. The device is up, and the processing result is not good. Then the rectification takes a long time. Both sides are delayed.

Hello! Now, in order to protect the environment, there are special waste gas treatment facilities!

The exhaust gases of chemical plants are specially treated.

Pharmaceutical factory exhaust gas can be adsorbed and desorption treatment. Activated carbon, activated carbon fiber and molecular sieves are commonly used as adsorption media, among which activated carbon is commonly used, which can effectively adsorb VOCs, and can be desorbed and regenerated, and the VOCs can be reused.

When using activated carbon as an adsorbent, the adsorption and desorption effect is better, but it is easy to spontaneously ignite some low-boiling point substances, so special attention needs to be paid to the safety design, and the good method is to adopt nitrogen desorption method for desorption. When the desorbed VOCs do not need to be reused, they are often further treated by RCO or RTO.

Pharmaceutical factory exhaust gas attention:

The use of high-energy UV ultraviolet beam to decompose oxygen molecules in the air to produce free oxygen (i.e., active oxygen), because of the imbalance of positive and negative electrons carried by free oxygen, it needs to be combined with oxygen molecules, and then produce ozone, ozone has strong oxidation, through ozone to organic waste gas, odorous gas synergistic photolysis oxidation, so that organic waste gas, odorous gas substances are degraded and converted into low molecular compounds, water and carbon dioxide.

To see what type of industrial waste gas is, most of them are solved with environmental protection equipment.

You can solve industrial exhaust gas with my equipment.

Now environmental protection waste gas is the focus of investigation, and every industry must do it.

The chemical industry is an indispensable and important part of the national economy, and a large number of exhaust gases containing volatile organic compounds will be produced during the operation and production of related enterprises, which will adversely affect human health and the atmospheric environment.

Through the investigation of the current situation of waste gas collection in chemical enterprises, it is found that most of the existing problems mainly include: the exhaust gas collection pipeline of the reactor is not connected to the waste gas treatment equipment, and it is directly vented, which is seriously polluted. In view of the fact that the existing waste gas treatment technology in the workshop is difficult to achieve satisfactory treatment results, we suggest that the company add a set of photo-oxygen catalytic equipment, which is mainly used to degrade and oxidize the organic gases in the waste gas, and then can be discharged up to the standard through activated carbon adsorption.

We all know that chemical plants will produce a large amount of waste gas in the production process, Taizhou waste gas treatment equipment manufacturers, and VOC organic waste gas. Whether it is organic waste gas or inorganic waste gas, they all have one thing in common, they emit a strong chemical smell. Moreover, if these chemical waste gases are not properly treated, they will not only have a great impact on the surrounding environment, but also cause great damage to the health of chemical plant employees and surrounding residents.

Therefore, the waste gas treatment of chemical plants is imminent, but the selection of waste gas treatment equipment for chemical plants should also be carefully considered!

Taizhou Linsen Chemical Plant Waste Gas Treatment Equipment Process:

First, the acid gas absorption tower is sprayed and washed, and the chemical tail gas gas absorption device first absorbs the organic substances and acid gases in the air, and then, through the photolysis or organic waste gas incinerator, the odorous substances in the chemical waste gas can be effectively purified by photochemical degradation or incineration. The photocatalytic oxidation waste gas treatment equipment can effectively improve the odor of the plant and the surrounding air environment, with good removal efficiency and low operating costs.

First of all, it is necessary to treat the waste gas according to the composition of the waste gas of the chemical plant, mainly to find out what the content and composition of the waste gas are, and how much, which is the premise of ensuring the correct treatment of our waste gas. 、

After that, the equipment selection of waste gas, you can use the waste gas purifier produced by Kang Jinghui, organic waste gas purification equipment, organic waste gas adsorption and concentration equipment, etc., these equipment can treat waste gas well. In addition, Kang Jinghui can provide users with relevant solutions and professional equipment when necessary to solve the emission and treatment of exhaust gas for users.

If you are looking for waste gas treatment, I recommend finding a manufacturer with rich professional experience, because this can reduce your time and cost, and can give you a lot of suggestions on how to solve the waste gas and meet the emission standards.

At present, the state control environment is quite strict, and fines of hundreds of thousands or millions are imposed at every turn, so environmental issues are extremely important.

Personal suggestion: In this regard, I suggest you look for manufacturers in the Kunshan area, Aunason Environmental Protection Company focuses on waste gas treatment and provides one-stop solutions, you can consider it.

Types of chemical waste gases:

1) Sulfur-containing compounds, such as hydrogen sulfide, mercaptans, dimethyl sulfide, thioethers and sulfur-containing heterocyclic compounds;

2) Nitrogen-containing compounds, such as ammonia, amines, nitriles, nitro compounds and nitrogen-containing heterocyclic compounds;

3) Carbon, hydrogen or compounds composed of carbon, hydrogen and oxygen (lower alcohols, aldehydes, fatty acids, etc.).

Among them, the eight odorous substances that have a greater impact on the human body are: hydrogen sulfide, ammonia, trimethylamine, methyl mercaptan, methyl sulfide, carbon disulfide, styrene, and dimethyl disulfide. And what we usually refer to as foul-smelling gases refers to gases that diffuse with foul odors in the air.

Processes commonly used in chemical industry:

1. The acid and alkali waste gas is suitable for the process of "dosing spray tower";

2. Organic waste gas is suitable for (depending on the specific composition and concentration) of "dry high-efficiency filtration + activated carbon adsorption concentration + catalytic combustion" process;

3. The mixed gas adopts the process of "dosing spray washing pretreatment + dry high-efficiency filtration + activated carbon adsorption concentration + catalytic combustion".

4. Process introduction: the mixed gas of the two first enters the dosing spray washing tower, removes the acid (alkali) gas in the exhaust gas according to the acid-base neutralization reaction, and automatically controls the pH value of the solution according to the pH, and automatically dosing. Some water-soluble substances and particulate matter in the exhaust gas are pretreated and purified; The gas-phase substance is converted into a liquid-phase substance, and an efficient cyclone plate is installed inside the spray scrubber, which effectively and fully contacts the gas with the circulating water and effectively removes the particulate matter in the exhaust gas. The upper part of the spray tower is equipped with a wire mesh mist eliminator to effectively remove the water mist generated by the spray tower;