Torch Unit Sewage Circulation System

Abstract

The invention provides a torch unit sewage circulation system which comprises a high-pressure gas-liquid separation tank, a low-pressure gas-liquid separation tank, an SRU gas-liquid separation tank, a high-pressure torch water sealing tank, a low-pressure torch water sealing tank, an SRU torch water sealing tank, a polluted rainwater pool and a submerged lifting pump; the polluted rainwater pool is used for receiving industrial water and overflow water from the high-pressure torch water sealing tank, the low-pressure torch water sealing tank and the SRU torch water sealing tank; the submerged lifting pump is used for delivering the water in the polluted rainwater pool to the high-pressure torch water sealing tank, the low-pressure torch water sealing tank and the SRU torch water sealing tank. According to the torch unit sewage circulation system, the water sealing water can be recycled, industrial water consumption can be reduced, sewage drainage can be reduced, and the load of a subsequent water treatment system can be reduced.

Description

Technical field [0001] The invention belongs to the field of coal chemical industry, in particular to a torch unit sewage treatment system. Background technique [0002] At present, the torch unit sewage treatment in the coal chemical industry uses the torch rainwater system, which separates the high-pressure flare gas through a high-pressure gas-liquid separation tank for gas-liquid separation, and the separated liquid is discharged to the external incinerator unit, and the separated gas is subjected to high pressure The water-sealed tank is washed in a water bath and sent to the flare combustion system; the low-pressure flare gas is passed through a low-pressure gas-liquid separation tank for gas-liquid separation, and the separated liquid is discharged to the off-boundary incinerator unit, and the separated gas is washed by the low-pressure water-sealed tank in the water bath Send to the flare combustion system; the SRU (SRU refers to the sulfur recovery unit) flare gas is sep...

AI Technical Summary

Problems solved by technology

However, due to the large amount of torch gas discharge from each device during the test run, the COD and oil content in the exhaust gas was high, resulting in the COD and oil content in the overflow water of the water-sealed tank exceeding the control index, and a large amount of sewage was discharged to the sewage treatment system, resulting in sewage treatment. greatly increased difficulty

[0004] At present, most of the domestic torch-polluted rainwater treatment systems use the above-mentioned process, which causes problems such as large sewage discharge, difficult water treatment system, and high load.

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