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Conceção do processo de tratamento de gases residuais

Waste Gas Treatment Process Design

​O organic waste gas pretreatment consists of two – stage alkali washing, one – stage water washinge surface cooling mist removal.​

  • O alkali washing tower removes sulfuric acid mist and hydrogen chloride from the waste gas.​
  • After acidic components are removed, a water washing tower buffers to reduce the impact of entrained lye on subsequent adsorption equipment.​

Pre – treated waste gas (acid – removed, de – watered, humidity – adjusted) is pressurized by a fan and sent to an activated carbon adsorption tank under suitable conditions. Once the activated carbon is saturated after a period of adsorption, its performance declines.​

Periodic desorption of the organic waste gas from the activated carbon surface is required to restore its adsorption ability. This process uses the fact that activated carbon has high adsorption capacity at room temperature and low capacity at high temperature to recycle it, known as temprature swing adsorption in the industry.
Purified waste gas is discharged from the chimney’s high point, which has detection and online monitoring ports, along with a monitoring platform and guardrails, meeting relevant local and national standards.
TYIC is engaged in the manufacturing of acid mist absorption towers 、corresponding pipeline and relevant equipment, as well as the treatment of acid mist absorption in unorganized gases and the handling of acid-containing waste gases. (The acid mist removal rate of TYIC’s process acid mist absorption tower is 100%.)

Emission Target

In accordance with the emission standards of “Emission Standard of Pollutants for Inorganic Chemical Industry” (GB31573-2015), “Integrated Emission Standard of Air Pollutants” (GB16297-1996), and “Emission Control Standard of Volatile Organic Compounds from Industrial Enterprises” (DB12524-2014), and strictly implementing them, under the condition that the air volume reaches the design value/meets the collection requirements of the workshop, the pollutant emission concentrations after treatment should meet the following standards:

Emission Standards for Organic Pollutants

Number Pollutant Items The maximum Allowable Emission Concentration
(mg/m³)		 Height of Release(m) Maximum Allowable Emission Rate(kg/h)
1 NMHC 80 15 2.0
2 Sulfuric Fog 20 15 1.5
3 HCl 20 15 0.26

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