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Universal Partition Wall Vibration Recovery Process and Device for Volatile Organic Compounds

A volatile organic compound, general-purpose technology, used in the separation of dispersed particles, air quality improvement, chemical instruments and methods, etc., can solve problems such as difficulties, and achieve the effect of reducing the amount of coolant, high purity, and overcoming separation difficulties.

Active Publication Date: 2011-12-14
武汉旭日华环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the TSA desorption stage, because water vapor or inert hot gas, especially water vapor, is directly introduced into the bed, limited by the pressure of general industrial and mining boilers, it is difficult to reach a very high temperature and provide sufficient kinetic energy for VOCs.

Method used

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  • Universal Partition Wall Vibration Recovery Process and Device for Volatile Organic Compounds
  • Universal Partition Wall Vibration Recovery Process and Device for Volatile Organic Compounds
  • Universal Partition Wall Vibration Recovery Process and Device for Volatile Organic Compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The flow rate of a pharmaceutical factory is 2000-3000NM 3 / hour Dimethylformamide (DMF) mixed tail gas, DMF content 5% (volume ratio).

[0037] according to figure 1Connect equipment, pipelines, fittings and control instruments. The adsorption-desorption device 61 and the adsorption-desorption device 62 are filled with solid adsorbent ACF, and after the DMF mixed tail gas is dried and filtered for pretreatment, the DMF content of 5% (volume ratio) is determined by gas chromatography, and flows into the buffer tank 1 (the function is Concentration and flow rate), through the high-pressure blower 2, through the cooler 3 and filter 4, at a flow rate of 0.2-0.8m / s (to the diameter of the tank or tower), through the flame arrester 5, flow from top to bottom, and enter The adsorption-desorption device 61 adsorbs VOCs in the exhaust gas, and at the same time, the outer jacket heat exchanger of the adsorption-desorption device 61 and the tube heat exchanger inside the devic...

Embodiment 2

[0043] Except for the following operations, the rest are the same as in Embodiment 1, that is, in the adsorption operation stage, the coolant introduced into the outer jacket heat exchanger of the adsorption-desorption device 61 is changed to cooling water. During the desorption operation stage, water vapor at 150°C is used to heat the partition wall, which is respectively introduced into the outer jacket heat exchanger of the adsorption-desorption device 61 and the tube heat exchanger inside the device; the temperature of the solid adsorbent is gradually raised to maintain the set temperature Complete the desorption process at 110°C and maintain a vacuum of 0.07MPa; use cooling water as the coolant for cooling the condenser 91 .

Embodiment 3

[0045] Except for the following operations, the rest are the same as in Example 1, a vibrator is arranged under the adsorption-desorption device, granular activated carbon is filled in the tank, and the vibration frequency is 150 minutes during the adsorption operation. During the adsorption operation stage, the coolant introduced into the outer jacket heat exchanger of the adsorption-desorption device 61 is changed to cooling water. In the desorption operation stage, water vapor at 150°C is used for heating the partition wall, which is respectively introduced into the outer jacket heat exchanger of the adsorption-desorption device 61 and the tube heat exchanger inside the device; the temperature of the adsorbent is gradually raised to maintain the set temperature of 110 °C. °C to complete the desorption process and maintain a vacuum of 0.07 MPa; use cooling water as the coolant for cooling the condenser 91.

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Abstract

The invention relates to a general partition wall vibrating process and device for recovering volatile organic matters. The process comprises the following steps of: (1) adsorbing; (2) desorbing; and (3) cooling, condensing and recovering. An adsorption-desorption device comprises a tank body or a tower body, and is characterized in that: an external wall heat exchanger is arranged on the adsorption-desorption device; an internal partition wall heat exchanger is arranged inside the adsorption-desorption device; and the bottom of the tank body or the tower body is provided with a vibrator by connecting. The invention has the advantages that: (1) the adsorption and desorption processes are efficiently and safely finished; (2) the defects of difficulty in separating during recovery of VOCs (Volatile Organic Compounds) with TSA (Temperature Swing Adsorption), shorter service life and lower efficiency of an adsorption agent, and the like are overcome, the recovered VOCs have high purities, and the consumption of a cooling agent is lowered; and (3) the process and the device are suitable for recovering organic matters of low, middle and high boiling points, and particularly, the problem of difficulty in recovering a solvent of a high boiling point is solved.

Description

technical field [0001] The invention relates to a process for recovering volatile organic compounds from waste gas, in particular to a general-purpose partition-vibration recovery process and device for volatile organic compounds. Background technique [0002] Temperature swing adsorption (TSA) and pressure swing adsorption (PSA) are widely used in the recovery of VOCs in industrial or domestic waste gas due to their own advantages, but they also have shortcomings: [0003] (1) The process cannot fully meet the requirements of the basic laws of solid adsorption and desorption. As we all know, the adsorption isotherm of adsorption equilibrium shows that the adsorption capacity decreases with the increase of the adsorption operating temperature, and the process of VOCs being adsorbed by solid adsorbents, usually Accompanied by heat release, the thermal effect released by adsorption cannot be removed in time, which will cause the temperature of the adsorbent to rise, reduce the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/04B01D53/06
CPCY02A50/20
Inventor 殷斌烈殷莉
Owner 武汉旭日华环保科技股份有限公司
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