CN-224231723-U - Hydrogen peroxide solution production line tail gas monitoring system

CN224231723UCN 224231723 UCN224231723 UCN 224231723UCN-224231723-U

Abstract

The utility model relates to the technical field of hydrogen peroxide production, in particular to a hydrogen peroxide production line tail gas monitoring system which is connected with an exhaust gas discharge flue, wherein the exhaust gas discharge flue is sequentially communicated with a high-temperature tracing pipeline, a multi-stage dust removal filter, a measuring chamber and a vacuum pump, an explosion-proof high-temperature sampling probe is arranged at the air inlet end of the Gao Wenban hot pipeline, an FID detector and/or an online gas chromatograph are arranged in the measuring chamber, the hydrogen peroxide production line tail gas monitoring system further comprises a tail gas treatment device, the tail gas treatment device comprises a temporary storage tank, a spray tank and a discharge flue which are sequentially communicated through pipelines, the temporary storage tank is connected with the output end of the vacuum pump, and a VOC (volatile organic compound) treatment agent adding mechanism is connected to the spray tank. The hydrogen peroxide production line tail gas monitoring system can detect non-methane total hydrocarbons in the waste gas and effectively purify the detected waste gas.

Inventors

DONG SHIYU
DONG JING
HUANG FENG
YANG PING

Assignees

广西田东达盛化工科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250422

Claims (9)

1. The tail gas monitoring system of the hydrogen peroxide production line is connected to an exhaust gas discharge flue, the exhaust gas discharge flue is sequentially communicated with a high-temperature heat tracing pipeline, a multi-stage dust removal filter, a measuring chamber and a vacuum pump, an explosion-proof high-temperature sampling probe is arranged at the air inlet end of the Gao Wenban hot pipeline, and the tail gas monitoring system is characterized in that an FID detector and/or an online gas chromatograph are arranged in the measuring chamber.
2. The hydrogen peroxide production line tail gas monitoring system according to claim 1, wherein the VOC treating agent adding mechanism comprises a supply tank and a quantitative pump, the supply tank is communicated with a spray pipe in the spray tank through a supply pipe, and the quantitative pump is arranged on the supply pipe.
3. The hydrogen peroxide production line tail gas monitoring system according to claim 2, wherein the area of the supply pipe between the dosing pump and the spray pipe is provided with a one-way valve.
4. The hydrogen peroxide production line tail gas monitoring system according to claim 2, wherein a water mixing valve is arranged between the supply pipe and the spray pipe.
5. The hydrogen peroxide production line tail gas monitoring system according to claim 1, further comprising an explosion-proof processing unit, wherein the explosion-proof processing unit comprises a pressure relief pipeline, an expansion joint and a pressure relief valve, wherein the expansion joint and the pressure relief valve are arranged on the pressure relief pipeline, and one end of the pressure relief pipeline is connected with the measuring chamber.
6. The hydrogen peroxide production line tail gas monitoring system according to claim 5, wherein a filter box is arranged at one end of the pressure relief pipeline, which is discharged outwards, and a heat exchange bushing is arranged outside the area, between the filter box and the pressure relief valve, of the pressure relief pipeline.
7. The hydrogen peroxide production line tail gas monitoring system according to any one of claims 1 to 6, further comprising an incubator, wherein the Gao Wenban hot pipeline, the multi-stage dust removal filter and the measuring chamber are all arranged in the incubator, the vacuum pump is arranged outside the incubator, one inlet end of the high-temperature heat tracing pipeline penetrates out of the incubator, and a heating plate is arranged in the incubator.
8. The hydrogen peroxide production line tail gas monitoring system according to any one of claims 1 to 6, wherein the measuring chamber is connected with a gas supplementing tank through a pipeline, and a flowmeter and a switch valve are arranged on the pipeline between the gas supplementing tank and the measuring chamber.
9. The hydrogen peroxide production line tail gas monitoring system according to any one of claims 1 to 6, wherein the measuring chamber is connected with a back-blowing tank through a pipeline, an air compressor is connected to the back-blowing tank, an air inlet filter is arranged at an air inlet end of the air compressor, and a control valve is arranged on the pipeline between the measuring chamber and the back-blowing tank.

Description

Hydrogen peroxide solution production line tail gas monitoring system Technical Field The utility model relates to the technical field of hydrogen peroxide production, in particular to a hydrogen peroxide production line tail gas monitoring system. Background At present, waste gas containing pollutants such as non-methane total hydrocarbon, sulfur dioxide, nitride and the like is discharged in the hydrogen peroxide production process, and the discharged tail gas can pollute the environment if a treatment system is not timely adjusted. Therefore, aiming at the situation, the existing manufacturers generally monitor the content of pollutants such as sulfur dioxide and nitride in the exhaust gas on line by a hot wet method, and the traditional hot wet method generally utilizes a hot wet extraction method to analyze the data, such as CN221826746U, which is a flue gas on-line monitoring system of the hot wet method. The system is characterized in that the hydrogen peroxide is adopted in the gas filtering device to oxidize pollutants such as sulfur dioxide and nitride in the waste gas, so that the pollutants are purified, but the waste gas generated in the hydrogen peroxide production process also contains non-methane total hydrocarbon and a small amount of hydrogen peroxide, the detection system cannot detect the content of the non-methane total hydrocarbon in the waste gas, and meanwhile, the internal gas filtering device cannot remove the detected non-methane total hydrocarbon in the waste gas, so that environmental pollution can be caused. For the above-mentioned circumstances, patent CN 202321798549.0-an exhaust gas adsorption treatment device with VOCs monitoring function discloses how to carry out the technical scheme of monitoring VOCs concentration in exhaust gas and treating VOCs in exhaust gas on line, but adopts the filtration mode of filter screen in this scheme, and the mode of activated carbon filter screen adsorption is generally adopted in the industry at present. Because the filter mode of changing the filter screen is adopted, the filter screen needs to be frequently changed, the replacement cost is high, and the detection can be interrupted while the filter screen is changed. Disclosure of utility model In order to overcome one of the defects in the prior art, the utility model aims to provide a hydrogen peroxide production line tail gas monitoring system which can detect non-methane total hydrocarbons in waste gas and effectively purify the detected waste gas. In order to solve the problems, the technical scheme adopted by the utility model is as follows: The utility model provides a hydrogen peroxide production line tail gas monitoring system, is connected in the exhaust gas discharge flue, the exhaust gas discharge flue has high temperature tracing pipeline, multistage dust removal filter, measuring chamber and vacuum pump in proper order to communicate, be provided with explosion-proof high temperature sampling probe on Gao Wenban hot pipeline's the inlet end, be provided with FID detector and/or online gas chromatograph in the measuring chamber, still include tail gas processing apparatus, tail gas processing apparatus is including the temporary storage tank, spray tank and the discharge flue that loop through the pipeline intercommunication, the output of temporary storage tank and vacuum pump is connected, be connected with VOC treatment agent adding mechanism on the spray tank. Further, the VOC treatment agent adding mechanism comprises a supply tank and a quantitative pump, wherein the supply tank is communicated with a spray pipe in the spray tank through a supply pipe, and the quantitative pump is arranged on the supply pipe. Further, a one-way valve is arranged in the area of the supply pipe between the dosing pump and the spray pipe. Further, a water mixing valve is arranged between the supply pipe and the spray pipe. Further, the device also comprises an explosion-proof processing unit, wherein the explosion-proof processing unit comprises a pressure relief pipeline, an expansion joint and a pressure relief valve, and the expansion joint and the pressure relief valve are arranged on the pressure relief pipeline, and one end of the pressure relief pipeline is connected with the measuring chamber. Further, a filter box is arranged at one end of the pressure relief pipeline, which is discharged outwards, and a heat exchange bushing is arranged outside the area between the filter box and the pressure relief valve. Further, still include the insulation can, gao Wenban hot pipeline, multistage dust removal filter and measuring chamber all set up in the insulation can, the vacuum pump is installed outside the insulation can, the insulation can is worn out to the one end that high temperature heat tracing pipeline was admitted air, be provided with the hot plate in the insulation can. Further, the measuring chamber is connected with a gas supplementing tank through a pipeline, and a flow