Can rural sewer pipes be frozen and melted with industrial salt?

Rural sewer pipes are frozen, and industrial salt can be used to dissolve them. Industrial salts are used in soap manufacturing, ceramics, glass production, daily chemicals, oil drilling, drilling working fluids, completion fluids, petrochemical dehydration fluids, early strength agents in the construction industry, coagulants for the production of coatings, and latex coagulants in the rubber industry. Paper industry additives and waste paper deinking, salt also has a wide range of uses in water treatment, highway snow removal, refrigeration and refrigeration.

Features of industrial salts:In real life, a considerable number of people can't distinguish the substantive difference between "table salt" in life and "salt" in chemistry, so that there have been many incidents of accidental ingestion of toxic salts and group poisoning.

Nitrite has strong reducibility, which can make the meat colorful, and some unscrupulous and ignorant businesses in life use industrial salt to marinate stale meat products, resulting in mass nitrite poisoning incidents, so"Industrial salts"It is often customary to refer specifically to nitrite.

The above content refers to Encyclopedia - Industrial Salt.

Can't be opened. The pipeline is a confined space, and the depth is very long, the industrial salt can only contact the ice at the end of the pipeline, and the action part is very limited, so this method can basically be vetoed, and it is impossible to melt the ice of the sewer pipe.

No, industrial salt is used to melt snow in winter, sprinkled on top of the snow, making the snow easier to melt, but the sewer is frozen, how do you sprinkle industrial salt on ice, the ice is in the pipes, all can only be heated to melt the ice.

In the "Regulations on the Safety Supervision of Special Equipment" (2009), it is stipulated as follows:

1) Boiler refers to the use of various fuels, electricity or other energy sources, the liquid contained in the equipment to heat to a certain parameter, and output heat energy, the scope of which is specified as a pressure steam boiler with a volume greater than or equal to 30L; outlet water pressure greater than or equal to gauge pressure), and the rated power is greater than or equal to the pressure hot water boiler; Organic heat carrier boilers.

2) Pressure vessel refers to a closed equipment containing gas or liquid and carrying a certain pressure, the scope of which is specified as a fixed container and mobile container with a maximum working pressure greater than or equal to 0 1 MPa (gauge pressure), and the product of pressure and volume greater than or equal to 2 5 MPa L for gas, liquefied gas and liquid with a maximum working temperature higher than or equal to the standard boiling point; Gases, liquefied gases and gas cylinders with a nominal working pressure greater than or equal to 0 2MPa (gauge pressure) and the product of pressure and volume greater than or equal to 1 0MPa L and a standard boiling point equal to or lower than 60 liquids; oxygen chambers, etc.

3) Pressure pipeline refers to the tubular equipment used to transport gas or liquid by using a certain pressure, and its scope is specified as a gas, liquefied gas, vapor medium or liquid medium with a maximum working pressure greater than or equal to 0 1MPa (gauge pressure) or a liquid medium with a maximum working temperature higher than or equal to the standard boiling point, and a nominal diameter greater than 25mm.

Feed water pumps, feed water pump recirculation, main feed water pipelines, high-pressure desuperheating water pipelines, feedwater regulating valves, high-pressure heater feedwater parts, boiler feedwater distribution pipes, etc.

Water wall, superheater, reheater, economizer, air preheater.

The heating surface refers to the surface area of the metal in contact with the flue gas, such as the steam boiler and the additional heating surface, that is, the surface area of the flue gas and water (or steam) for heat exchange, which is expressed in h and the unit is m2. The size of the heating surface is generally calculated by the side of the flue gas heat release.

The cause of the burning of the heating surface of the boiler.

The heating surface of the boiler is the interface where the heat in the flue gas is transferred to steam, water and air, and the temperature of the heating surface will quickly approach or reach the flue gas temperature when there is no cooling medium such as steam, water and air. The temperature that coal and oil may reach when burning normally is 1500 1600, which is higher than the melting point of steel, and the melting and oxidation of steel caused by this is called burning. A 670t h furnace in order to stop the furnace maintenance and dry the water in the superheater, the wrong oil gun to heat up, because there was no water in the water wall at that time, soon the water wall tube was burned through, of course, such examples are very rare.

The heating surface burnout that occurs in power plants is mainly the burning of the heating surface of the air preheater and economizer (there have also been reports of burning loss of electrical precipitator), which is usually called boiler tail flue recombustion, or secondary combustion. During the commissioning of a 2008t h boiler, the air preheater caught fire on October 13 and November 20, 1995, and the heat transfer elements of the two air preheaters suffered varying degrees of damage. The reason for this is that unburned combustible fuel scale (carbon black and oil droplets) in the furnace chamber is deposited on the heating surface of the tail.

When the temperature and oxygen conditions are suitable, it will spontaneously combust**. The air preheater stops running after an emergency shutdown, and air leaks from the poorly closed smoke and windshield are often the causes of grease ignition.

Water wall, superheater, reheater, economizer, air preheater.

Water wall, superheater, reheater, economizer.

The pipes in the boiler are not counted as pressure pipes.

Please see: "Boiler Safety Technical Supervision Regulations" TSG G0001-2012 Boiler Scope Pipes.

1) Power station boilers, including boiler main water supply pipes, main steam pipelines, reheat steam pipelines, etc.

2) Boilers other than power station boilers are divided into boilers with steam (water, oil) cylinders and boilers without steam (water and oil) cylinders: boilers with steam (water and oil) cylinders include pressure-bearing pipes (including steam (water and oil) cylinders in the weld of the first circumferential joint connected between the boiler feed water (oil) pump outlet and the outlet of the steam (water and oil) cylinder and the external pipeline; Boilers without steam (water, oil) cylinders, including boiler feed (oil) pump outlets and pressure pipes within the boiler main steam pipeline (water, oil) outlet valves.

The steam (water, oil) cylinder shall comply with the relevant provisions of the collection box of these regulations.

No, it's a boiler body part. There is an essential difference between boiler components and pressure piping.

1. Main steam pipelines (two high-temperature and high-pressure steam pipelines between the superheater outlet coupling and the high-pressure main valve interface);

2. Hot reheat steam pipelines (two high-temperature and high-pressure steam pipelines from the outlet of the reheater to the interface of the medium-pressure main valve);

3. Cold and reheat steam pipelines (two high-temperature and high-pressure steam pipelines between the exhaust port of the high-pressure cylinder and the interface of the inlet of the reheater);

4. High-pressure water supply pipeline (high-pressure boiler water supply pipeline between the outlet of the electric feed pump and the interface of the economizer inlet and the box).

and special high-pressure pipes and fittings for the four major pipelines (elbows, flanges, tees, large and small heads, elbows), etc.

Economizer tubes, water-cooled wall tubes, superheated steam pipes, reheated steam pipes.

Buy pipes, find DFI, various models of diameters, spot direct sales, quality assurance.

Hello, you can't use it, because PVC can't be used in hot water pipes, it will be degummed. If it is a hot water boiler, you can use a PPR tube.