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Treatment method for exhaust gas from dicumyl peroxide DCP devices

A technology for dicumyl peroxide and waste gas treatment, which is applied in chemical instruments and methods, separation methods, and dispersed particle separation, etc., can solve the problems of secondary pollution, complex process, long process, etc., and achieves low cost and simple process. , the effect of low operating temperature

Inactive Publication Date: 2015-07-22
SINOPEC SHANGHAI ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of long process flow, large energy consumption, low efficiency, high cost, complicated process and secondary pollution in the prior art, and a new method for the treatment of waste gas of a dicumyl peroxide DCP device is provided method

Method used

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  • Treatment method for exhaust gas from dicumyl peroxide DCP devices
  • Treatment method for exhaust gas from dicumyl peroxide DCP devices
  • Treatment method for exhaust gas from dicumyl peroxide DCP devices

Examples

Experimental program
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Effect test

Embodiment 1

[0021] in such as figure 1 In the shown technological process, adopt the method for waste gas treatment of dicumyl peroxide DCP plant of the present invention, the production scale of DCP plant is 300 tons / year. The vacuum tail gas generated from the benzyl alcohol refining process, condensation reaction, condensation concentration process, cumene recovery process and mother liquor concentration process from the DCP unit is mixed and pressurized, then passes through the flame arrester, and then is pressurized by the induced draft fan and enters the buffer tank The oxidized tail gas produced by the oxidation and enrichment reaction is combined into a mixed tail gas, which enters the heat pipe gas-gas heat exchanger to exchange heat with the high-temperature purified tail gas at the outlet of the catalytic oxidation reactor, and the preheated mixed tail gas enters an electric heater to be heated to catalytic oxidation The temperature required for the reaction is sent to the cata...

Embodiment 2

[0027] According to the conditions described in Example 1, only the production scale of the DCP unit is expanded to 24,000 tons / year, and the treatment capacity of oxidation tail gas and vacuum tail gas is shown in the table below.

[0028]

[0029] Vacuum tail gas mixed and pressurized to 0.006MPaG enters the flame arrester. The reaction temperature of the catalytic oxidation reactor is 450°C and the reaction pressure is 0.03MPaG. The temperature of the mixed tail gas at the inlet of the catalytic oxidation reactor is 250°C. The temperature of the purified tail gas is 450°C, the temperature of the mixed tail gas at the inlet of the heat pipe gas-gas heat exchanger is 40°C, and the temperature of the purified tail gas at the outlet of the heat pipe gas-gas heat exchanger is 120°C. Thus, after the catalytic oxidation treatment of the present invention, the removal rate of trace harmful and volatile organic pollutants in the tail gas is 99.6%, and the methanol emission concent...

Embodiment 3

[0031] According to the conditions described in Example 1, only the production scale of the DCP unit is expanded to 60,000 tons / year, and the treatment capacity of oxidation tail gas and vacuum tail gas is shown in the table below.

[0032]

[0033] Vacuum tail gas mixed and pressurized to 0.006MPaG enters the flame arrester. The reaction temperature of the catalytic oxidation reactor is 450°C and the reaction pressure is 0.03MPaG. The temperature of the mixed tail gas at the inlet of the catalytic oxidation reactor is 250°C. The temperature of the purified tail gas is 450°C, the temperature of the mixed tail gas at the inlet of the heat pipe gas-gas heat exchanger is 40°C, and the temperature of the purified tail gas at the outlet of the heat pipe gas-gas heat exchanger is 120°C. Thus, after the catalytic oxidation treatment of the present invention, the removal rate of trace harmful and volatile organic pollutants in the tail gas is 99.7%, and the methanol emission concentra...

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Abstract

The invention discloses a treatment method for exhaust gas from dicumyl peroxide DCP devices, and mainly solves the problems that the process is long, energy consumption is large, the efficiency is low, the cost is high, the technology is complex and the secondary pollution exists in the prior art. The treatment method of the exhaust gas from the dicumyl peroxide DCP devices disclosed by the invention comprises the following steps: mixed and pressurized vacuum exhaust gases pass through a fire arrester, and then enter a buffer tank to be mixed with oxidized tail gas; the mixed tail gases enter a hot-tube gas-to-gas heat exchanger; preheated mixed tail gases pass through an electric heater and are sent into a catalytic oxidation reactor, and under the effect of a honeycomb catalyst of precious metal, the organic pollutants in the mixed tail gases generate an oxidizing reaction with oxygen; the high-temperature purified tail gases discharged from the catalytic oxidation reactor heat the mixed tail gases through the hot-tube gas-to-gas heat exchanger so as to recycle heat; the purified tail gases after exchanging heat are discharged through an exhaust funnel. The treatment method disclosed by the invention can be used for treating the exhaust gas from the dicumyl peroxide DCP devices.

Description

technical field [0001] The invention relates to a method for treating waste gas of a dicumyl peroxide DCP device. Background technique [0002] Exhaust gas control is a key topic that the industry, especially the chemical industry, has a lot of research reports on. During the production of dicumyl peroxide DCP, a large amount of waste gas containing pollutants will be produced, and the pollutants contained in the waste gas are mainly components such as cumene and non-methane total hydrocarbons. Patent application number 201310493053.7 relates to the recovery and utilization method of oxidation tail gas in chemical plants, and discloses a treatment process for oxidation tail gas. The exhaust gas of the device is discharged after reaching the standard. Patent application number 201410159392.0 relates to a treatment method for waste gas from dicumyl peroxide production, and discloses a method for treating tail gas from a cumene hydroperoxide plant by using activated carbon ad...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/76B01D53/44
Inventor 张斌赵婧杨建平陆璐李真泽何琨
Owner SINOPEC SHANGHAI ENG
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