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Styrene waste gas treatment device and method

A treatment device and technology for styrene, applied in gas treatment, chemical instruments and methods, separation methods, etc., to achieve low energy consumption, efficient removal and resource utilization, and high removal rate

Inactive Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] At present, there is no ideal treatment device and treatment method for styrene waste gas. Therefore, the current problem is that there is an urgent need to research and develop a treatment device and treatment method for styrene waste gas that can efficiently treat styrene waste gas and realize resource utilization.

Method used

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  • Styrene waste gas treatment device and method

Examples

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Embodiment 1

[0055] use as figure 1 The shown device treats the aromatics extraction device and discharges high-concentration styrene waste gas from time to time, and the volume content of each component in the waste gas is 589 mg / m styrene 3 , Benzene 412mg / m 3 , toluene 367mg / m 3 , Xylene 268mg / m 3 , other hydrocarbons 2870mg / m 3 . Other hydrocarbons mainly include alkanes, olefins and a small amount of aromatics and halogenated hydrocarbons. The total gas flow rate is 100-300m 3 / h, the temperature is lower than 20°C, the absorption unit adopts a spray tower, the superficial velocity is 2.0m / s, the overall size is Φ3600×8500mm, the quantity is 2, the absorbent is diesel, the consumption is 10.5t / h, and the material of the absorption unit is 304 stainless steel; organic gas separation membrane parameters: material PMOS, filling capacity 40m 2 , absorbent volatile matter / nitrogen separation coefficient 38.5, absorbent volatile oxygen separation coefficient 20.4, permeation flux 1.2...

Embodiment 2

[0062] use as figure 1 The device shown in the figure treats the waste gas discharged from the breathing valve of the styrene storage tank in the rubber factory, and the volume content of each component in the waste gas is styrene 1868mg / m 3 , Benzene 438mg / m 3 , toluene 548mg / m 3 , Xylene 63mg / m 3 , other hydrocarbons below 200mg / m 3 . Other hydrocarbons mainly include alkanes, olefins, and a small amount of aromatics and halogenated hydrocarbons. The total amount is relatively small and no specific analysis is made. The total flow of gas flow is 200m 3 / h, temperature 70°C (±5°C), absorption unit adopts packed tower, superficial velocity 1.40m / s, external dimension Φ2600×4500mm, quantity 2, absorbent adopts sulfolane after low temperature precooling, dosage 4t / h, absorption unit material stainless steel; organic gas separation membrane parameters: material PDMS, filling capacity 26m 2 , absorbent volatile matter / nitrogen separation coefficient 31.5, absorbent volatil...

Embodiment 3

[0070] use as figure 1 The shown device treats styrene car loading platform waste gas, the volume content of each component in the waste gas is styrene 347-1368mg / m 3 , other hydrocarbons below 200mg / m 3 . Other hydrocarbons mainly include volatiles of benzene series and polymerization inhibitors, the total amount is small and no specific analysis is made. The total flow of gas flow is 200m 3 / h, temperature 0°C (±5°C), absorption unit adopts packed tower, superficial velocity 1.36m / s, external dimension Φ3600×4200mm, quantity 2, absorbent adopts low-temperature pre-cooled dimethyl sulfoxide, Add a small amount of polymerization inhibitor, the dosage is 6t / h, the material of the absorption unit is stainless steel; the parameters of the organic gas separation membrane: the material is PDMS, and the filling volume is 40m 2 , absorbent volatile matter / nitrogen separation coefficient 31.5, absorbent volatile oxygen separation coefficient 18.6, permeation flux 1.85-2.10m 3 / m ...

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Abstract

The present invention relates to a styrene waste gas treatment device which comprises: an absorption unit, which is configured to use an absorbent to perform absorption treatment on styrene in styrenewaste gas so as to obtain a styrene-rich absorption liquid and an absorbent volatile matter-rich waste gas; a demisting unit which is configured to perform demisting treatment on the absorbent volatile matter-rich waste gas to obtain demisted absorbent volatile matter-rich waste gas; a membrane separation unit which is configured to perform separation treatment on the demisted absorbent volatilematter-rich waste gas to obtain permeation side gas rich in organic matters and permeation residue side gas; a condensation separation unit which is configured to perform condensation separation treatment on the permeation side gas rich in organic matters to obtain a condensate and a gas phase; and an adsorption unit which is configured to perform adsorption treatment on the permeation residue side gas to obtain waste gas for up-to-stand discharge. The invention also relates to a method for treating styrene waste gas by adopting the device. The method provided by the invention can solve the problem of styrene self-polymerization, can efficiently treat styrene waste gas, and can realize comprehensive utilization of resources.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a treatment device and method for styrene waste gas. Background technique [0002] With the improvement of the country's economic level and the transformation of people's ideas, the environmental protection indicators of chemical companies have been continuously improved. In petroleum refining industry and chemical industry, styrene is an important chemical raw material, which can be used in organic synthesis, especially in the production process of synthetic polystyrene and rubber. Styrene is also widely used in the production of polyether resins, plasticizers and plastics. During the storage and production of styrene, a large amount of waste gas rich in styrene is produced. Styrene is relatively volatile, easy to self-polymerize, has the characteristics of biological toxicity, etc., and usually requires low temperature storage. Due to the self-polymer...

Claims

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Application Information

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IPC IPC(8): B01D53/14B01D46/00B01D53/22B01D53/04
CPCB01D46/00B01D53/04B01D53/14B01D53/1487B01D53/22B01D2257/70
Inventor 魏昕栾金义杨丽奚振宇
Owner CHINA PETROLEUM & CHEM CORP
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