Organic solid waste double-layer furnace body wet ash discharge fixed bed gasification furnace and gasification method
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A fixed-bed gasifier and organic solid waste technology, which is applied in gasification process, combustible gas manufacturing, petroleum industry, etc., can solve the problem of high carbon content in solid phase ash, gas leakage at feed inlet, high tar content, etc. question
Pending Publication Date: 2021-04-23
苏州允清环境能源科技有限公司 +1
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The organic solid waste double-layer furnace body wet ash discharge fixed bed gasifier can be applied to the gasification treatment of carbon-containing organic solids such as domestic garbage, medical waste, organic hazardous waste, industrial organic solid waste, biomass, coal, etc. The problem of high tar content and gas leakage at the feed port of the counter-current gasification device where the gas moves in the opposite direction to the material layer is solved, and the carbon content in the solid phase ash of the downstream gasification device that moves in the same direction as the gas and the material layer is solved high problem
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Embodiment 1
[0088] The structure of organic solid waste double-layer furnace body wet ash discharge fixed bed gasifier is as follows: Figure 1-3 shown in Figure 1-3 Middle: 1-feed inlet, 2-upper valve of feed buffer bin, 3-feed buffer bin, 4-lower valve of feed buffer bin, 5-filling and releasing port of feed buffer bin, 6-top gasification Agent inlet, 7-distributing device, 8-upper furnace body, 9-lower furnace body, 10-gas outlet, 11-membrane water wall, 12-furnace grate, 13-ash tray, 14-bottom gasification Agent inlet, 15-middle gasification agent inlet, 16-inert gas purge inlet, 17-grate gasification agent distribution regulator, 18-slag ring, 19-first ash knife, 20 - grate support, 21 - second ash knife, 22 - slag breaking block.
[0089] (1) Feed
[0090] The organic solid waste gasification furnace in this embodiment is composed of three parts: a feeding device, a gasification device and a slagging device. The feeding device is composed of feed port 1, feed buffer bin upper v...
Embodiment example
[0100] The inner diameter of the gasifier is 3.2m, the material to be treated is domestic waste, and the treatment capacity is 2.9t / h. The main operating conditions and gasification results are as follows:
[0101] (1) Material industry analysis is shown in the table below
[0102]
[0103] (2) Operating conditions:
[0104] Gasification pressure: 2000Pa;
[0105] Gasification agent: air + water vapor;
[0106] Air volume: 3100Nm 3 / h;
[0107] Water vapor volume: 260kg / h.
[0108] (3) Gasification result:
[0109] Gas production: 4300Nm 3 / h;
[0110] Composition of gas: H 2 : 12.54%, CO: 17.20%, CH 4 : 2.65%, CO 2 : 10.05%, N 2 : 57.2%, O 2 : 0.27%, C n h m : 0.09%;
[0111]Gasification efficiency: 68%;
[0112] Carbon content of ash: 3.3%;
[0113] Gas tar content: 3 .
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Abstract
The invention discloses an organic solid waste double-layer furnace body wet ash discharge fixed bed gasification furnace and a gasification method, the gasification furnace comprises a feeding device, a reaction zone furnace body comprising an upper section furnace body and a lower section furnace body, a furnace top gasification agent gas inlet, a middle section gasification agent gas inlet, a furnace bottom gasification agent gas inlet, a coal gas outlet and a deslagging device, an annular cavity is formed between the upper section furnace body and the lower section furnace body, the coal gas outlet is formed in the side wall, corresponding to the annular cavity, of the lower section furnace body and located between the furnace top gasifying agent inlet and the middle section gasifying agent inlet, and the slag discharging device is arranged in water and comprises an ash tray, a slag crushing ring, a fire grate supporting piece and a first ash knife. The gasification furnace can be applied to gasification treatment of various carbon-containing organic solids, solves the problems of high tar content and gas leakage at a feeding hole of a reverse-flow type gasification device capable of moving in opposite directions of coal gas and a material layer, and also solves the problem of high carbon content in solid-phase ash of a co-current gasification device with coal gas and material layer moving in the same direction.
Description
technical field [0001] The invention relates to the field of solid waste treatment and resource utilization. Specifically, the invention relates to a wet-type ash-discharging fixed-bed gasification furnace with a double-layer furnace body for organic solid waste and a gasification method. Background technique [0002] At present, domestic organic solid waste with high calorific value or high calorific value after treatment is often treated by thermochemical conversion, which can realize the reduction, recycling and harmlessness of organic solid waste. The main thermochemical conversion methods are incineration, pyrolysis and gasification. Incineration refers to the introduction of excess air to completely oxidize organic solid waste at high temperature into flue gas and non-combustible solid products, ash and fly ash. The heat energy is converted into electric energy for utilization. The nitrogen, sulfur, and chlorine elements contained in organic solid waste will be convert...
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