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Landfill gas power generation pretreatment method and device

A technology of landfill gas and pretreatment device, applied in gas treatment, circuit device, separation method, etc., can solve the problems of low treatment efficiency, high operation and maintenance cost, complicated process, etc., and achieve low operation and maintenance cost, long-term The effect of reliable operation and process safety

Pending Publication Date: 2017-11-28
深圳相控科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the pretreatment of landfill gas power generation, technicians have done a lot of research and research, but there are still problems and deficiencies in the current technical solutions, such as complex process, high power consumption of the system, low processing efficiency, high operation and maintenance costs, and large air pressure fluctuations 1. The generator set is prone to "snatching air" phenomenon, resulting in unstable work, etc., which needs further improvement

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  • Landfill gas power generation pretreatment method and device
  • Landfill gas power generation pretreatment method and device

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Embodiment 1

[0027] This embodiment provides a landfill gas power generation pretreatment device, the landfill gas power generation pretreatment device is mainly used to remove impurities, water and sulfide in the landfill gas, so as to use more pure landfill gas gas to generate electricity.

[0028] Such as figure 1 As shown, the landfill gas power generation pretreatment device of this embodiment mainly includes a defoaming filter 10 , an adsorption and desorption device 20 , a fan 30 , an air-cooled heat dissipation network pipe 40 and a generator set 50 sequentially connected by air pipes. The landfill gas passes through the defoaming filter 10, the adsorption and desorption device 20, the fan 30, the air-cooled heat dissipation network pipe 40 and the generator set 50 in order to complete the pretreatment and power generation to the grid.

[0029] The defoaming filter 10 is a tank or cylinder, and a filter layer is installed in the upper part of the middle. The filter layer separates...

Embodiment 2

[0042] This embodiment provides a pretreatment method of landfill gas power generation, which uses the device in the first embodiment above to realize the treatment.

[0043] Such as figure 2 As shown, the pretreatment method of the landfill gas power generation includes the following steps:

[0044] S001: gas-liquid-solid separation;

[0045] The landfill gas is introduced from the air inlet in the middle of the defoaming filter 10 into the lower chamber of the defoaming filter 10, and the upper and middle filter layers can separate the liquid water and solid impurities mixed in the landfill gas , to obtain relatively dry landfill gas without fixed impurities, and the filtered landfill gas is discharged from the gas outlet at the upper end to the adsorption-desorption device 20 for further processing. The separated liquid water and solid impurities can be discharged through the sewage outlet at the lower end.

[0046] S002: adsorption dehydration desulfurization;

[0047...

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Abstract

The invention discloses a landfill gas power generation pretreatment method and device. The method includes the steps of: gas-liquid-solid separation: separating landfill gas to remove liquid water and solid impurities mixed in landfill gas; adsorption dewatering and desulfurization: guiding the separated landfill gas into an adsorption-desorption device with a drum-type molecular sieve for dewatering and desulfurization; supercharging gas transmission: conducting supercharging gas transmission on the dewatered and desulfurized landfill gas by a draught fan; air cooling heat dissipation: performing heat dissipation on the supercharged landfill gas air cooling heat dissipation net pipe to a preset temperature; power generation to the power grid: transmitting the air cooled and heat dissipated landfill gas to a generating set for power generation to the power grid; recycling of generated waste heat and cyclic regeneration of the adsorbent. The treatment method and device provided by the invention have the advantages of concise and effective treatment, good treatment effect, and safe, stable and efficient process, can fully meet the requirements of generators for fuel gas, ensure long-term and reliable operation of the set, also the operation and maintenance cost is low, the system energy consumption is small, and the method and the device show green, low carbon, economical efficiency and other characteristics.

Description

technical field [0001] The invention relates to waste treatment technology, in particular to a method and device for pretreatment of landfill gas power generation. Background technique [0002] In my country, more than 70% of municipal solid waste is transported to local waste disposal sites for landfill. Landfill gas (LFG) is produced by anaerobic fermentation after landfill treatment, and its typical components are methane, carbon dioxide, nitrogen, hydrogen sulfide, ammonia, etc. These gases are directly discharged into the atmosphere, flammable and explosive, causing serious safety hazards, causing serious pollution to the environment, serious greenhouse effect, and a waste of resources and energy. [0003] Landfill gas can be used in a wide range of ways after recovery, such as power generation or as fuel energy, among which the use of internal combustion engines for power generation is the most common way of utilization. Through the gas collection system, pretreatmen...

Claims

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Application Information

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IPC IPC(8): B01D46/00B01D53/26B01D53/06H02J3/38
CPCB01D46/00B01D53/06B01D53/261B01D53/266H02J3/381B01D2253/108B01D2253/116B01D2259/40088B01D2257/30B01D2258/05Y02E50/30
Inventor 游涛冉波李国强
Owner 深圳相控科技股份有限公司