CN-121977379-A - Converter shell side hot water recovery system and method

CN121977379ACN 121977379 ACN121977379 ACN 121977379ACN-121977379-A

Abstract

The invention provides a converter shell side hot water recovery system and a method. The shell-side hot water recovery system of the converter comprises the converter, a hot water tank, a first valve, a second valve, a hot water recovery pipe, a hot water recovery tank, a hot water recovery pump outlet pipe and a third valve, wherein the converter is connected with the hot water tank through a pipeline, the first valve and the second valve are both connected with the converter, the hot water recovery tank is connected with the first valve through the hot water recovery pipe, the hot water recovery pump is connected with the hot water recovery tank through a pipeline, the hot water tank is connected with the hot water recovery pump through the hot water recovery pump outlet pipe, and the third valve is connected with the hot water recovery tank through a pipeline.

Inventors

ZHAO AIMIN
WANG QIANG
Wang Bangshan
ZHANG ZHINING
NIU YADI
TANG YUANSHEN
CHEN TIANYU
XI MIN

Assignees

新疆中泰化学托克逊能化有限公司
新疆中泰化学股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260213

Claims (10)

1. The utility model provides a converter shell side hot water recovery system, its characterized in that includes converter (2), hot water tank (8), first valve (10), second valve (11), hot water recovery pipe (12), hot water recovery jar (13), hot water recovery pump (14), hot water recovery pump outlet pipe (15) and third valve (16), converter (2) pass through the pipeline with hot water tank (8) are connected, first valve (10) and second valve (11) all are connected with converter (2), hot water recovery jar (13) pass through hot water recovery pipe (12) with first valve (10) are connected, hot water recovery pump (14) pass through the pipeline with hot water recovery jar (13) are connected, hot water tank (8) pass through hot water recovery pump outlet pipe (15) with hot water recovery pump (14) are connected, third valve (16) pass through the pipeline with hot water recovery jar (13) are connected.
2. A converter shell side hot water recovery system according to claim 1, characterized in that a shell side is arranged in the converter (2), the hot water tank (8), the first valve (10) and the second valve (11) are all connected with the shell side of the converter (2), and pure water is arranged in the hot water tank (8).
3. A converter shell side hot water recovery system according to claim 2, characterized in that the volume of the hot water recovery tank (13) is adapted to the volume of the shell side of the converter (2), the bottom of the converter (2) is located above the top of the hot water recovery tank (13), and the third valve (16) is connected to the bottom of the hot water recovery tank (13) by a pipe.
4. A converter shell side hot water recovery system according to claim 1, characterized in that the top of the converter (2) is connected with an inlet pipe (1), the bottom of the converter (2) is connected with an outlet pipe (3) and a fourth valve (6).
5. The shell side hot water recovery system of the converter according to claim 1, wherein the converter (2) is connected with a water inlet pipe (4) and a water outlet pipe (5), the water inlet pipe (4) is connected with a hot water pump (9), the hot water pump (9) is connected with the bottom of the hot water tank (8) through a pipeline, a fifth valve is installed on the water inlet pipe (4), the water outlet pipe (5) is connected with the hot water tank (8) through a hot water return water main pipe (7), and a sixth valve is installed on the water outlet pipe (5).
6. A converter shell side hot water recovery system according to claim 1, characterized in that the first valve (10) is located on the bottom side of the converter (2) and the second valve (11) is located on the top side of the converter (2).
7. The converter shell side hot water recovery system according to claim 1, wherein the third valve (16) is connected with a trench through a pipeline, the trench is connected with a sewage treatment system, water quality detection equipment and water temperature detection equipment are arranged in the hot water recovery tank (13), the water quality detection equipment and the water temperature detection equipment are both connected with controllers, and the controllers are respectively connected with the hot water recovery pump (14) and the third valve (16).
8. A method of converter shell side hot water recovery, characterized in that based on a converter shell side hot water recovery system according to any of the preceding claims 1 to 7, the converter shell side hot water recovery method comprises: s1, when the converter tube array leaks, a circulation pipeline between the hot water tank (8) and the converter (2) is closed, and a first valve (10) and a second valve (11) are opened; s2, detecting whether the hot water in the hot water recovery tank (13) accords with the use index; s3, when the hot water in the hot water recovery tank (13) meets the use index, turning on a hot water recovery pump (14), and conveying the hot water in the hot water recovery tank (13) to a hot water tank (8) through the hot water recovery pump (14); s4, when the hot water in the hot water recovery tank (13) does not accord with the use index, the hot water in the hot water recovery tank (13) is cooled to normal temperature in a natural cooling mode, and then the third valve (16) is opened.
9. The method for recovering hot water from a shell side of a converter according to claim 8, wherein the step S2 includes detecting whether the chloride ion content of the hot water in the hot water recovery tank (13) is less than a preset value and detecting whether the pH value of the hot water in the hot water recovery tank (13) is within a preset range, wherein when the chloride ion content of the hot water in the hot water recovery tank (13) is less than the preset value and the pH value of the hot water in the hot water recovery tank (13) is within the preset range, it is indicative that the hot water in the hot water recovery tank (13) meets a use index.
10. The method for recovering hot water from a shell side of a converter according to claim 9, wherein the step S1 is preceded by opening a hot water pump (9), a fifth valve and a sixth valve when the converter is operating normally; In the step S1, the fifth valve and the sixth valve are closed to close a circulation pipeline between the hot water tank (8) and the converter (2); Step S4, detecting whether the water temperature of the hot water in the hot water recovery tank (13) is reduced to normal temperature by a natural cooling mode; When the water temperature of the hot water in the hot water recovery tank (13) is reduced to normal temperature in a natural cooling mode, a third valve (16) is opened, and the normal temperature water in the hot water recovery tank (13) is discharged to a trench sewage treatment system; The preset value is 100ppm, and the preset range is 8-10.

Description

Converter shell side hot water recovery system and method Technical Field The invention relates to the technical field of calcium carbide process polyvinyl chloride production equipment, in particular to a converter shell side hot water recovery system and a method. Background The production process of polyvinyl chloride by a calcium carbide method is outlined. The acetylene gas and the hydrogen chloride gas are mixed, the water content index of the gas is less than or equal to 0.06 percent, the gas is heated to be more than or equal to 70 ℃ by a preheater, the gas enters a converter, and the gas reacts with the hydrogen chloride gas to generate the chloroethylene by the catalysis of a catalyst in a tube array of the converter. The catalytic reaction temperature is controlled between 120 ℃ and 180 ℃. The hot water at the temperature of 97+/-2 ℃ which is taken by the shell side outside the tube array of the converter not only has the functions of heating acetylene gas and hydrogen chloride gas and improving the catalytic reaction rate and conversion rate, but also has the function of taking away the reaction heat. Hot water in the hot water tank of the converter enters the shell side inlet pipe of the converter through the hot water pump, the hot water exchanges heat through the row pipe of the converter, and is discharged from the hot water outlet pipe of the converter and returned to the hot water tank of the converter, so that the hot water circulates, the pH value of the hot water index is 8-10, and the chlorine radical is less than 100ppm. Because the acetylene gas and the hydrogen chloride gas which pass through the tube side of the converter contain moisture, and simultaneously the newly filled catalyst contains moisture (the new catalyst contains moisture and the catalyst absorbs the moisture in the air in the process of overturning the converter), the hydrogen chloride gas and the water have hydrochloric acid, and meanwhile, the hydrogen chloride gas has stronger permeability, and in some cases (the quality of a tube weld, the steel material, the production process temperature, the expansion caused by heat and contraction caused by cold of equipment in the operation process and the like), the converter leaks. After the leaked converter is stopped, hot water on the shell side of the converter is discharged to a sewage treatment system of the trench, the hot water cannot be utilized, the load of the sewage treatment system is increased, the hot water at 97+/-2 ℃ is directly discharged into the trench, the service life of the trench is also influenced, and tiles attached to the surface of the trench are easy to fall off due to expansion and contraction, so that the maintenance cost of the trench is increased. Disclosure of Invention The invention aims to solve the technical problem of providing a converter shell side hot water recovery system and a method thereof aiming at the defects of the prior art. The technical scheme includes that the converter shell side hot water recovery system comprises a converter, a hot water tank, a first valve, a second valve, a hot water recovery pipe, a hot water recovery tank, a hot water recovery pump outlet pipe and a third valve, wherein the converter is connected with the hot water tank through a pipeline, the first valve and the second valve are both connected with the converter, the hot water recovery tank is connected with the first valve through the hot water recovery pipe, the hot water recovery pump is connected with the hot water recovery tank through a pipeline, the hot water tank is connected with the hot water recovery pump through the hot water recovery pump outlet pipe, and the third valve is connected with the hot water recovery tank through a pipeline. The technical scheme has the beneficial effects that the converter shell side hot water recovery system with the hot water recovery tank and the hot water recovery pump is designed. When the converter leaks, the first valve and the second valve are opened to discharge the hot water of the converter into the hot water recovery tank, the quality of the hot water is detected, if the hot water meets the use index of the hot water of the converter, the hot water is recovered to the hot water tank of the converter, the hot water is recycled, and if the quality of the hot water is detected to be not in accordance with the use index, the hot water is cooled to normal temperature and is discharged into a trench sewage treatment system. Recycling the leaked hot water of the converter, saving water, reducing the load of a sewage treatment system and the treatment cost, saving corrosion inhibitor medicaments and protecting the anti-corrosion tiles of the trench. Further, a shell side is arranged in the converter, the hot water tank, the first valve and the second valve are all connected with the shell side of the converter, and pure water is arranged in the hot water tank. The technical scheme has the beneficial ef