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Multistage gradient type indirect condensation device and process for treating VOCS waste gas

A condensing device and waste gas technology, which is applied in gas treatment, steam condensation, multi-effect/separation condensation, etc., can solve the problems of refrigeration compressors not running stably, affecting the effect of waste gas condensation treatment, and alarming when equipment is shut down, so as to ensure condensation Governance effect, avoiding unstable operation or damage, and reducing the operating cost of the device

Pending Publication Date: 2020-09-29
JIANGSU WISDOM ENG TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

For mechanical refrigeration devices, when the load is lower than 50%, the refrigeration compressor cannot operate stably, which not only affects the condensation treatment effect of the exhaust gas, but also causes frequent shutdowns and alarms of the equipment, or even damage

Method used

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  • Multistage gradient type indirect condensation device and process for treating VOCS waste gas

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Embodiment Construction

[0037] A VOC processing provided by this embodiment S Multi-stage gradient indirect condensation device of exhaust gas, such as figure 1 As shown, it includes multi-stage exhaust gas condenser A and multi-stage exhaust gas condenser B. Multi-stage exhaust gas condenser A includes one-stage exhaust gas condenser A1, two-stage exhaust gas condenser A3 and three-stage exhaust gas condenser A5, and multi-stage exhaust gas condenser The device B includes a primary exhaust gas condenser B2, a secondary exhaust gas condenser B4, and a tertiary exhaust gas condenser B6, which are connected in series to form exhaust gas condensation channel A and exhaust gas condensation channel B, exhaust gas condensation channel A and exhaust gas condensation Channel B is connected in parallel and then connected to the same exhaust gas collector. The switching of the exhaust gas condensing channel A and the exhaust gas condensing channel B, as well as the switching of condensation and temperature rise...

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Abstract

The invention discloses a multistage gradient type indirect condensation device and process for treating VOCS waste gas, belonging to the technical field of waste gas treatment. According to the invention, a waste gas condensation channel A and a waste gas condensation channel B are respectively formed; the waste gas condensation channel A and the waste gas condensation channel B are connected inparallel; the-same-stage condensers are connected with the same cold carrying device in parallel and form a cold carrying loop with the cold carrying device respectively; each stage of cold carrying device is connected with a refrigerating unit; the last stage of refrigerating unit is connected with a heat carrying device; and the-same-stage condensers are connected with the heat carrying device in parallel and form a heat carrying loop with the heat carrying device respectively. According to the invention, a cold-carrying working medium is used as a buffer for heat balance in a system, so stable condensation temperature and recovery treatment effect of VOCS-containing waste gas are ensured when the gas quantity and the composition of the VOCS-containing waste gas are changed.

Description

Technical field [0001] The present invention relates to VOC-containing S The technical field of waste gas treatment, especially related to a treatment of VOC S Multi-stage gradient type indirect condensation device and process for waste gas. Background technique [0002] The petroleum and chemical industries will produce VOC-containing products during the production, storage and transportation of oil products. S The exhaust gas is discharged into the atmosphere to cause air pollution, and because of the combustible and toxic characteristics of organic matter, the direct discharge of exhaust gas will also cause safety hazards in the plant area. To avoid VOC S The exhaust gas discharged into the atmosphere causes environmental pollution and brings safety hazards. According to the requirements of relevant national laws and regulations, it is necessary to prevent such VOC S Waste gas to be treated, so that the VOC S The content falls below the prescribed limit before it can be discha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D5/00B01D53/00
CPCB01D5/0003B01D5/0036B01D5/0039B01D5/0054B01D5/009B01D53/002B01D2257/708
Inventor 李丹丹张斌曹彦王少云米娜娜
Owner JIANGSU WISDOM ENG TECH
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