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Process for treating oxidized exhaust gas

A technology for oxidizing tail gas and process, applied in the chemical industry, incinerator, steam condensation and other directions, can solve the problems of increased energy consumption, high one-time investment, increased energy consumption, etc., to achieve low operating costs, simple process, lower temperature Effect

Active Publication Date: 2011-05-18
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the regenerative incineration process requires supplementary fuel to maintain the temperature required for incineration and increase energy consumption; for the regenerative regenerative incineration process, not only the energy consumption increases, but also the one-time investment is the highest

Method used

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  • Process for treating oxidized exhaust gas
  • Process for treating oxidized exhaust gas

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Embodiment 1

[0023] The tail gas of phenol and acetone produced by a certain enterprise contains 10000mg / m of cumene 3 (in addition to entrained liquid phase), cumene hydroperoxide 0.01wt%, benzene 300mg / Nm 3 , Toluene 30mg / Nm 3 , Non-methane total hydrocarbons 45×10 4 mg / Nm 3 , the tail gas temperature is 80~100℃, the flow rate is 19000Nm 3 / h After heat exchange by the heat recovery heat exchanger (1), the temperature is 60-70°C, and after being cooled by cooling water in the cooler (2), the temperature is 25-40°C, and then enters the first gas-liquid separation tank for gas-liquid Separation, the uncondensed gas discharged from the top, after being cooled by the heat exchanger (5), the temperature is 15-25°C, and further cooled by the cryocooler (6), the temperature is 1.4°C, after that, it enters the second gas-liquid separation The tank (4) performs gas-liquid separation, and the uncondensed gas discharged from the top of the second gas-liquid separation tank first passes through ...

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Abstract

The invention discloses a novel method for recovering and treating oxidized exhaust gas generated in phenol production, which comprises the following steps: adopting deep cooling to achieve liquefaction separation of organic matters by reducing the temperature of the exhaust gas to below 5 DEG C, wherein the material recovery rate reaches more than 95 percent; and adopting a Pt catalyst to decompose residual total hydrocarbons and cumene in the exhaust gas at a temperature of between 220 and 450 DEG C to achieve emission after reaching standards. The method can improve the exhaust emission quality, recover effective components in the exhaust gas, and reduce the device loss rate and the device material consumption on the basis of raw water cooling and activated carbon adsorption.

Description

technical field [0001] The invention relates to a method for the recovery and discharge treatment of organic matter in the tail gas of oxidation reaction in the production process of phenol acetone. Background technique [0002] In the process of producing phenol-acetone by the cumene method, the cumene and the oxygen in the air undergo an oxidation reaction to generate cumene hydroperoxide, and the unreacted air is released from the oxidation reactor. This part of the air is called oxidation exhaust. The oxidation tail gas contains organic components such as cumene, cumene hydroperoxide, and organic acids generated in the reaction. [0003] At present, there is an adsorption method for the treatment of oxidation tail gas, which mainly uses activated carbon to adsorb the oxidation tail gas, but the adsorption capacity of the strong adsorption system is insufficient, and the loss of venting is large; the adsorption system needs to be regenerated frequently, resulting in a ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D5/00F23G7/07C07C37/08C07C45/53C07C39/04C07C49/08
CPCY02P20/10Y02P20/50Y02P70/10
Inventor 潘金杯张佩君徐传海王延军王力吕文玉严福莉
Owner CHINA PETROLEUM & CHEM CORP
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