Fire coal coupling biomass, garbage and sludge gasification combustion combined heat and power generation device and process

Abstract

The invention discloses a fire coal coupling biomass, garbage and sludge gasification combustion combined heat and power generation device and process. According to the fire coal coupling biomass, garbage and sludge gasification combustion combined heat and power generation device and process, on the basis of an existing thermal power boiler, turbine and generator, a brand-new cyclone type fluidized bed gasification furnace, a cyclone separator and a cyclone type lower calorific value combustion engine are introduced; direct high-temperature combustion is achieved through obtained gasificationcombustion; and obtained high-temperature flue gas reaches 1200 DEG C or above and is directly introduced into the thermal power boiler. The fire coal coupling biomass, garbage and sludge gasification combustion combined heat and power generation device and process can be applied to multiple types of biomass, organic garbage and sludge, can prevent coking and have the advantages that continuous operation of a system is guaranteed, the calorific value is fully utilized, the technological process is short, and operating cost is low. The fire coal coupling biomass, garbage and sludge gasification combustion combined heat and power generation device can be well coupled with a power station in service, so that combined heat and power generation balance is achieved; the national requirement ofgenerating power through the fire coal coupling biomass, the garbage and the sludge is completely met; and the energy conservation and emission reduction targets can be achieved conveniently.

Description

technical field [0001] The invention relates to a coal-fired coupled heat and power cogeneration device and process, in particular to a heat and power cogeneration device and process for coupling the gasification combustion of granular fuel prepared from biomass, garbage and sludge to the existing coal-fired power generation system. Background technique [0002] Biomass is a traditional renewable resource, and the development of biomass power generation industry has great potential. On the one hand, the sown area of ​​crops in my country is 1.8 billion mu, and the annual production of materials is about 700 million tons. Except that part is used for papermaking and livestock feed, the rest can be used as fuel. On the other hand, my country's existing forest area is about 175 million hectares. Biomass resources can be obtained every year through normal shrub stubble and rejuvenation, forest tending and thinning, fruit tree hedge trimming, and collection of forest harvesting,...

AI Technical Summary

Problems solved by technology

There are also many demonstration devices for raw waste gasification devices in my country. The gasification efficiency is low, the calorific value of gas is low, and it is impossible to achieve long-term stable operation of large-scale industrialization

[0007] The traditional fluidized bed gasification furnace has very little selectivity for raw materials, and the gasification furnace system has little room for adjustment, so it cannot adapt to a variety of raw materials. In addition, it can only achieve medium-temperature gasification, and the gas production rate is low. The tar in the gasification gas The content is relatively high, and the gasification gas is often sent to the boiler for combustion in a negative pressure manner. The tar in the gasification gas is easy to coke in the fan and boiler, causing blockage, and the tar is likely to cause secondary pollution. Coke, many processes, high operating costs

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