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Method and device for treating exhaust gas of styrene-butadiene rubber drying oven

A technology for styrene-butadiene rubber and a treatment method, which is applied in separation methods, chemical instruments and methods, and air quality improvement, etc., can solve the problems of large fluctuation range, high styrene concentration, and high temperature, and achieve the effect of saving energy

Active Publication Date: 2017-04-05
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Aiming at the problems of colloidal viscous substances in the exhaust gas of the styrene-butadiene rubber drying box, and the problems of high styrene concentration, large fluctuation range, and high temperature, the present invention proposes a treatment method and device for the exhaust gas of the styrene-butadiene rubber drying box. The tail gas of the drying box is cooled, pretreated to remove colloidal particles, and then biologically treated to ensure that the exhaust gas is discharged up to the standard

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  • Method and device for treating exhaust gas of styrene-butadiene rubber drying oven

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Effect test

Embodiment 1

[0034] Styrene-butadiene rubber drying box waste gas 200,000 m 3 / h, temperature 50°C, humidity 95%, non-methane total hydrocarbon content 800mg / m 3 ,according to figure 1 process is processed. The exhaust gas conveying power of the styrene-butadiene rubber drying box comes from the blower, enters from the middle of the spray cooling tower 10 through the air inlet pipe 9, and uses the circulating pump to pressurize and lift the cooling water at 25°C to the top of the tower through the circulating water pipe II 11, and then passes through the spray nozzle Ⅰ 12 Spray downward from the top, the exhaust gas temperature drops to 38°C, and the water storage tank 13 at the bottom of the spray cooling tower 10 has a water storage capacity of 300m 3 , the circulation volume of cooling water is 5000m 3 / h. The exhaust gas volume after cooling is 180,000 m 3 / h, the amount of circulating water increases by 9m after water vapor turns into condensed water 3 / h, this part of excess wa...

Embodiment 2

[0036] Styrene-butadiene rubber drying box waste gas 180,000 m 3 / h, temperature 45°C, humidity 90%, non-methane total hydrocarbon content 400mg / m 3 ,according to figure 1 process is processed. The exhaust gas conveying power of the styrene-butadiene rubber drying box comes from the blower, enters from the middle of the spray cooling tower 10 through the air inlet pipe 9, and uses the circulating pump to pressurize and lift the cooling water at 25°C to the top of the tower through the circulating water pipe II 11, and then passes through the spray nozzle Ⅰ 12 Spray downward from the top, the exhaust gas temperature drops to 36°C, and the water storage tank 13 at the bottom of the spray cooling tower 10 has a water storage capacity of 300m 3 , the circulating volume of cooling water is 4000m 3 / h. The exhaust gas volume after cooling is about 170,000 m 3 / h, the amount of circulating water increases by about 7m after the water vapor turns into condensed water 3 / h, this p...

Embodiment 3

[0038] Styrene-butadiene rubber drying box waste gas 180,000 m 3 / h, temperature 45°C, humidity 90%, non-methane total hydrocarbon content 60mg / m 3 ,according to figure 1 process is processed. The exhaust gas conveying power of the styrene-butadiene rubber drying box comes from the blower, enters from the middle of the spray cooling tower 10 through the air inlet pipe 9, and uses the circulating pump to pressurize and lift the cooling water at 25°C to the top of the tower through the circulating water pipe II 11, and then passes through the spray nozzle Ⅰ 12 Spray downward from the top, the exhaust gas temperature drops to 36°C, and the water storage tank 13 at the bottom of the spray cooling tower 10 has a water storage capacity of 300m 3 , the circulating volume of cooling water is 4000m 3 / h. The exhaust gas volume after cooling is about 170,000 m 3 / h, the amount of circulating water increases by about 7m after the water vapor turns into condensed water 3 / h, this pa...

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Abstract

The invention belongs to the technical field of exhaust gas treatment and relates to a method and device for treating exhaust gas of a styrene-butadiene rubber drying oven. The method comprises (a) water washing and cooling: introducing exhaust gas of a styrene-butadiene rubber drying oven into a spray cooling tower through a gas inlet pipe so that the exhaust gas reversely contacts with cooling water sprayed from top to bottom, conveying circulating water in a water storage tank at the tower bottom to a cooling medium so that a styrene-butadiene latex heat exchanger is cooled after the reaction, and further cooling the heat exchanger through a heat exchanger pipe 2 with cold water flowing in the water storage tank, (b) biological treatment: feeding the exhaust gas subjected to water washing and cooling into a biological filter tower so that the exhaust gas goes through a biological filter from top to bottom and reversely contacts with a nutrient solution sprayed from top to bottom so as to be purified, and discharging the treated exhaust gas. The method and device overcome the problems of the existence of rubbery viscous materials in the rubber drying oven tail gas, the high concentration of styrene, the large styrene concentration fluctuation range and high temperature, ensure the discharge of the exhaust gas satisfying the standards and have the environmental and economic double benefits.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a treatment method and device for waste gas of a styrene-butadiene rubber drying box. Background technique [0002] The heat and drying exhaust gas discharged from the drying box of the emulsion polystyrene butadiene rubber device in the rubber factory is large, the temperature is about 45-50 ℃, there are many types of organic matter, and the pollutant components are complex, mainly containing styrene, carbon disulfide, crushed rubber particles, tar components and water vapor (humidity above 90%), etc. The non-methane total hydrocarbons in the dry exhaust gas are mainly composed of styrene, and the concentration of styrene is about 60-750mg / m 3 , The concentration fluctuates greatly, and the proportion of styrene in the total non-methane hydrocarbons is about 30% to 95%. The exhaust gas is acidic and contains carbon disulfide and other impurities, so it ...

Claims

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Application Information

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IPC IPC(8): B01D47/06B01D53/84
CPCY02A50/20
Inventor 潘咸峰解红梅彭光辉李波刘婷婷
Owner CHINA PETROLEUM & CHEM CORP
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