Oxidation layer changing coal gas production method
A production method and oxide layer technology, which are applied in the gasification process, the manufacture of combustible gas, the petroleum industry, etc., can solve the problems of low gasification efficiency, irregular changes in the oxide layer, and difficulty in controlling the temperature of the oxide layer.
Inactive Publication Date: 2017-02-22
王万利
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Problems solved by technology
[0002] In the existing technology, the change of the oxide layer is irregular, the form of the change of the oxide layer is small, the temperature of the oxide layer is difficult to control, the gasification efficiency is low, and the fluctuation is large
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] The coal gas production method with oxide layer change according to the present invention, the carbon content of slag is less than 18%, comprises the following steps:
[0034] The oxide layer rises 70-260mm, less than or equal to the length of the oxide layer, or greater than the length of the oxide layer within 120, 1-4min, the temperature of the oxide layer rises to 900-1250°C, the temperature rise is basically completed in 1min, 1-2min, single-stage furnace time Short, two-stage furnace time is long, gasification efficiency is high, high oxide layer temperature in this stage is a necessary condition for high gasification efficiency, low oxide layer temperature is low gasification efficiency, first, before the oxide layer rises, the reduction layer temperature is 550- 1100°C, the position where the oxide layer rises. Before the temperature rise, the temperature of the reduction layer is high. Above 800°C, the carbon monoxide content of the oxide layer is low, and the w...
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Abstract
The present invention relates to an oxidation layer changing coal gas production method, which comprises that an oxidation layer rises; the oxidation layer descends, the steam pressure reducing is reduced, and then the steam pressure is naturally increased; and at the late stage of the oxidation descending process, the oxidation layer rising factors are reduced or eliminated, wherein the three links are subjected to period cycle. According to the present invention, the three links such as the slag removing oxidation layer rising, the slag removing oxidation layer descending stopping and the steam pressure increase reducing or eliminating are subjected to period cycle; the air flow rate is reduced, or the coal gas valve is opened, or the gas sealing is closed so as to make the oxidation layer rise; the air flow rate is increased, or the coal gas valve is closed, or the gas sealing is opened so as to make the oxidation layer descend; the slag removing oxidation layer circulation and other two oxidation layer circulation modes alternately run, wherein the slag removing oxidation layer circulation is the basis; softened water is injected at the third link of the oxidation layer circulation; coal adding is performed during the first link oxidation layer rising of the oxidation layer circulation; and the method has advantages of water vapor decomposition increasing, low carbon content in the slag, coal saving, and low ash content coal gasification.
Description
technical field [0001] The invention relates to a method for producing coal gas. Background technique [0002] In the prior art, the change of the oxide layer is irregular, the form of the change of the oxide layer is small, the temperature of the oxide layer is difficult to control, the gasification efficiency is low, and the fluctuation is large. The oxide layer indicated by the temperature acts as an oxide layer and prevents understanding of the gas production process. The coal ash content is less than 5%, and gasification is difficult. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a gas production method that circulates the oxide layer up and down, (the present invention does not specify, the oxide layer refers to the fuel layer where the chemical reaction of the oxide layer is taking place, consumes most of the oxygen, and the reduction layer refers to the fuel layer that is taking place. F...
Claims
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IPC IPC(8): C10J3/16
CPCC10J3/16C10J2300/093C10J2300/0976
Inventor 王万利
Owner 王万利