System and method for organic solid waste low-tar gasification combined heat and power supply

A technology of organic solid waste and cogeneration of heat and power, which is applied in the field of solid waste resource utilization, can solve problems such as unstable gas quality and difficult control of tar content, achieve improved energy efficiency, wide applicability of raw materials, and increase carbon conversion rate Effect

Active Publication Date: 2021-04-27
苏州允清环境能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this system can effectively solve the problems of unstable gas quality and difficult control of tar content in the gasification process of homogeneous organic solid waste, and can significantly improve the utilization rate of organic solid waste and the efficiency of back-end cogeneration

Method used

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  • System and method for organic solid waste low-tar gasification combined heat and power supply
  • System and method for organic solid waste low-tar gasification combined heat and power supply
  • System and method for organic solid waste low-tar gasification combined heat and power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Organic solid waste low-tar gasification combined heat and power system such as figure 1 As shown, it includes a double oxide layer gasifier 100, a cyclone dust collector 200, a phenol water heat exchanger 300, an air cooler 400, an intercooler 500, a booster 600, a desulfurization tower 700, a bag filter 800 and an internal combustion unit 900 etc.

[0097] Homogeneous organic solid waste or formed RDF is transported to the feeding device after drying and other pretreatments, and enters the furnace of the gasifier through the feeding buffer bin; during the feeding process, when the material enters the feeding buffer bin, the feeding buffer The upper valve of the feed buffer bin is opened, and the lower valve of the feed buffer bin is closed. When the feed buffer bin enters the transition bin, the upper valve of the feed buffer bin is closed, and the lower valve of the feed buffer bin is opened. After the material enters the gasification furnace, it is evenly distribut...

Embodiment 2

[0101] Such as figure 2 As shown, the difference from Example 1 is that the feeding device adopts double feeding channels; the slagging method adopted by the gasifier is side dry slagging, that is, the ash is rotated to the gasifier under the action of the grate The bottom side, under the action of the scraper, enters the slag chamber from the side and then discharges.

Embodiment 3

[0103] Such as image 3 As shown, the difference from Example 1 is that the slag removal method adopts the wet ash tray slag discharge, which is as follows: the gasified ash slag forms the ash tray water seal under the joint action of the grate, the ash tray and the slag ring, and there is also The scraper is welded on the furnace body and the slag ring, and the ash and slag are broken and slag is discharged during the rotation process; due to the certain pressure in the furnace, the water in the ash tray can be squeezed to a certain height to achieve a hydraulic seal. When the internal pressure is too large, the gas will emerge from the water to release the pressure safely, avoiding the safety hazard of explosion caused by the excessive pressure in the furnace.

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Abstract

The invention discloses an organic solid waste low-tar gasification combined heat and power system and method. The system comprises a double-oxide-layer gasification furnace, a cyclone dust collector, a phenol water heat exchanger, an air cooler, an intercooler, a supercharger, a desulfurizing tower, a bag type dust collector and an internal combustion engine unit. The double-oxide-layer gasification furnace comprises a feeding device, a reaction area furnace body, a furnace top gasification agent gas inlet, a middle section gasification agent gas inlet higher than the area where the sleeve is located, a furnace bottom gasification agent gas inlet, a coal gas outlet formed in the area where the annular cavity is located, a gasification agent distribution regulator and a deslagging device. The upper section of the furnace chamber is provided with a distributing device, the middle section is provided with a sleeve, the bottom is provided with a fire grate, an annular cavity is formed between the sleeve and the furnace wall, and the upper portion of the sleeve is of a wide-end-up structure and abuts against the furnace wall. By adopting the system, the problems of unstable fuel gas quality, difficult tar content control and the like in the gasification process of the organic solid waste can be solved, and the utilization rate of the organic solid waste and the cogeneration efficiency can be remarkably improved.

Description

technical field [0001] The invention belongs to the application field of solid waste recycling, in particular, it relates to a system and method for organic solid waste low-tar gasification cogeneration of heat and power. Background technique [0002] With the rapid development of the national economy, the environmental pollution of organic solid waste (such as biochemical waste, etc.) has become increasingly serious, and the efficient and clean resource utilization of organic solid waste has become a hot issue of social concern. Household waste incineration power generation is one of the important ways of solid waste recycling at present, but in addition to secondary pollution such as secondary fly ash and dioxin, incineration power generation also has the characteristics of complex equipment, high construction and operation costs, and Incineration power generation is not suitable for small-scale cogeneration of heat and power in a small-scale distributed system. As an eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/20C10J3/72C10J3/84C10J3/86C10K1/02C10K1/00
CPCC10J3/20C10J3/72C10J3/84C10J3/86C10K1/026C10K1/004C10J2200/15C10J2300/1675C10J2300/0976Y02P20/129
Inventor 赵明杨竹董卫果
Owner 苏州允清环境能源科技有限公司
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