Device system for voc removal using low temperature condensation method

Abstract

The invention discloses and provides a device system for using a low temperature condensation method to remove a VOC (volatile organic compound). The device system for using the low temperature condensation method to remove the VOC comprises a VOC removal module, an energy recovery module and a refrigeration module, wherein the VOC removal module performs VOC removal on external gas, the refrigeration module provides refrigerating mediums to the VOC removal module, the energy recovery module recycles heat released from the refrigeration module, and the energy recovery module heats the external gas after the VOC of the external gas is removed by the VOC removal module. According to the device system for using the low temperature condensation method to remove the VOC, the VOC removal module uses a cooling method to achieve the VOC removal for the external gas, and has high VOC removal efficiency, the refrigeration module can continuously provide the refrigerating mediums to the VOC removal module, can achieve cyclic efficient utilization for the refrigerating mediums, and can save cost increased by adding an additional refrigerating medium, and the energy recovery module can recycle additional heat generated by the refrigeration module when the refrigeration module processes the refrigerating mediums, and uses the additional heat to heat the low temperature external gas after the VOC of the external gas is removed so as to improve temperature of the external gas, and thereby facilitates normal proceeding of following processes, achieves cyclic utilization of energy, and saves energy cost.

Description

technical field [0001] The invention relates to VOC removal, in particular to a device system for removing VOC from biogas, landfill gas shale gas, synthetic gas and other gases by using a low-temperature condensation method. Background technique [0002] Volatile Organic Compounds (Volatile Organic Compound, referred to as VOC) usually refer to organic compounds with a vapor pressure > 70.91Pa at room temperature and a boiling point below 260 degrees Celsius in the air, generally including alkanes, alkenes, alkynes, aromatics, ketones, alcohols , ethers, esters, etc., and some organic compounds containing N, O, s, halogens and other substitution atoms. VOCs are ubiquitous in biogas or landfill gas, etc., running gas chromatography and spectroscopy (GC-MS) and other detection methods, found VOC substances It can be as high as hundreds of kinds. Common VOCs include benzene, toluene, xylene, pinene, etc. [0003] In the process of gas purification such as biogas or landfil...

AI Technical Summary

Problems solved by technology

The disadvantage is that the system is more complicated, the investment is higher, and consumables such as liquid nitrogen are required, resulting in high cost

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