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Hello landlord, according to the questions you raised, the following will be answered in detail for you:
The composition of industrial organic waste gas is complex, and if it is not effectively treated, direct emission will seriously pollute the atmospheric environment, so the importance of waste gas treatment is constantly highlighted. People should use the corresponding waste gas treatment process according to the actual needs, among which the condensation treatment process is a way of organic waste gas treatment.
Condensation process of organic waste gas treatment
Most of the high-concentration waste gas is produced in vacuum concentration and other links, and it is not difficult to find that the waste gas contains a large number of organic solvents and has a relatively obvious boiling point. People can choose the low-temperature condensation ** treatment process, in fact, the energy efficiency of the process depends on the material properties of the treatment object. The exhaust gas is placed in a low-temperature environment, the properties of the liquid can be changed under the action of temperature, and in the process of its equilibrium vapor pressure dropping, the organic solvent in the exhaust gas will be separated in large quantities, which can not only reasonably reduce atmospheric emissions, but also make the best use of organic solvents.
It is not difficult to find that the condensation treatment process has fewer process projects in the practical application stage, the operation is simple, and the resources consumed are generally not high, but the waste gas treatment effect is very ideal, which brings the basic guarantee for its wide application in industrial production.
Although the solvent efficiency is higher in the application stage of the condensation treatment process, the content of the solvent remaining in the exhaust gas is still different from the atmospheric emission standard when the optimal treatment temperature is reached. In other words, in this environment, it is not in accordance with the regulations to reduce the direct emission of exhaust gas, and it will also cause air pollution problems. If the method of continuing to reduce the condensation temperature is adopted to improve the solvent, it will lead to a significant reduction in the power index, and the water vapor in the exhaust gas will also be directly affected by the low temperature, resulting in frost and other problems.
This requires adjusting the direction and form of the treatment process, and applying a dry vacuum pump to carry out the first treatment of the solvent, because the exhaust gas discharged by the dry vacuum pump has less moisture, and compared with the low-temperature condensation treatment process, its advantages are obvious.
At this stage, the process types covered in the waste gas treatment process have certain diversified characteristics. Among them, the condensation treatment process from a comprehensive point of view, the application effect is better, not only will not consume more resources and funds, the equipment required is also less, the operation is simple, and the solvent generated in the treatment of waste gas can also be used. During the treatment period, the operation of the equipment does not need to invest a lot of money, and in the process of waste gas treatment, enterprises can rely on the solvent to increase economic income.
It is found that the effect of this method on the treatment of waste gas with high organic content is ideal, and the treatment effect of waste gas is ideal. Relatively, if the organic content of the exhaust gas is less, the amount of solvent will be greatly reduced, and the energy efficiency of the waste gas treatment will also be affected by it, showing a downward trend, therefore, in the early stage of the application of the condensation treatment process, the organic content in the waste gas should be measured, and the exhaust gas rate is calculated by the equation.
Hope it helps!
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When the exhaust gas is passed through the condenser pipe, the kerosene vapor will condense. It can also be used after purification.
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At present, there are many manufacturers of coal tar, which are generally used for separation and hydrogenation. The fraction before 170 is light oil; The fraction of 170 210 is mainly phenolic oil; The fraction of 210 230 is mainly naphthalene oil; The fraction of 230 300 is mainly washing oil; The fraction of 280 360 is mainly anthracene oil; 280 360 fractions of anthracene oil; The initial distillation point of anthracene oil is 310, and the distillation point is 400 when it is distilled at 50. Its products are:
1) Naphthalene is used to prepare phthalic anhydride for the production of resins, engineering plastics, and dyes. Paints and medicines.
2) Phenols and their homologues are produced in the production of synthetic fibers, engineering plastics, pesticides, pharmaceuticals, fuel intermediates, explosives, etc.
3) Anthracene to anthraquinone fuel, synthetic kneading agent and paint.
4) Phenanthrene is an isomer of anthracene, the content is second only to naphthalene, and has many uses, due to the large yield, it needs to be further developed and utilized.
5) Carbazole is an important raw material for dyes, plastics, and pesticides.
6) Bitumen is a tar distillation residue, which is a mixture of a variety of polycyclic polymer compounds. It is used in the production of roof coatings, moisture-proof layers and road construction, the production of asphalt coke and electric furnace electrodes, etc.
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Coal tar is one of the important products of the coking industry, its output accounts for about 3% and 4% of the furnace coal, its composition is extremely complex, and in most cases it is specially separated and purified by the coal tar industry for utilization. Each fraction of tar is further processed to separate a variety of products, such as mothballs, asphalt, plastics, pesticides, etc.
Health hazards: Acting on **, causing dermatitis, acne, folliculitis, phototoxic dermatitis, toxic melenoderma, warts and cancer. Can cause septal injury.
Environmental hazards: Harmful to the environment and can cause pollution to the atmosphere.
Explosion hazard: This product is flammable and carcinogenic.
Dangerous characteristics: Its vapor and air can form a ** mixture, which is very flammable in case of open flame and high heat. It reacts violently in contact with oxidants. In case of high heat, the internal pressure of the container increases, and there is a risk of cracking and **.
Hope satisfied!
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There are many types of waste gas produced by coal tar chemical plant, and the composition is more complex, mainly including non-combustible waste gas, toxic gas, flammable and explosive waste gas and toxic dust, etc., and different treatment methods should be adopted according to the different nature of waste gas.
The fundamental way out of waste gas treatment in coal tar chemical plant is to achieve clean production, adopt new technologies, new processes, and control in the intermediate process, and do not produce polluting waste gas.
The technology of small oxygen generator (nitrogen generator) in China has been very mature, and when the process conditions permit, the liquid storage equipment should be sealed with nitrogen.
The decomposition of carbon dioxide in phenol sodium salt has good environmental and economic benefits, and is worth promoting.
Cong Yu Electromechanical Technology Department!
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1) Benzopyrene is a fat-soluble substance, so it enters the cell by free diffusion
2) The endoplasmic reticulum membrane area is large, which is conducive to the attachment and transportation of enzymes
4) It can be seen from the question stem that product A binds to guanine, resulting in replication errors, which may lead to mutations in proto-oncogenes and tumor suppressor genes, and the formation of cancer in the aftermath
So the answer is: (1) free diffusion.
2) folded into a net, biochemical reactions can be carried out sequentially; The endoplasmic reticulum area is large, which is conducive to expanding the reaction area.
3) The decrease in the number of large mitochondria leads to a decrease in glutathione production, and the metabolism of intermediate product X is blocked in stage 2, resulting in the production of more mutagenic product A, which can induce mutations in human cells.
4) Cigarette smoke contains benzopyrene, which is metabolized to produce substance A, which binds to guanine in DNA replication, and the slag ruler leads to replication errors, forming gene mutations, activating proto-oncogenes in cells, causing cancer.
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1) Phospholipids (lipids).
2) The membrane area of the endoplasmic reticulum is large, which increases the attachment point of the enzyme and makes the product easy to transport.
3) The product pants front A is combined with bird stalk, and errors will occur during DNA replication, resulting in mutations in protocarcinoma or tumor suppressor genes.
4) Glutathione decreased, intermediate product X increased, product A increased 5) temperature, pH, metabolites, pure nuclear nutrients, etc.
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