Preparation method of gasification formed coke used for Lurgi furnace

A technology of gasification type and Lurgi furnace, which is applied in the field of preparation of gasification coke for Lurgi furnace, which can solve problems such as rising production costs of Lurgi furnace users, squeezed corporate profits, and increased difficulty in tail water treatment. , to achieve the effect of reducing the difficulty of tail water treatment, increasing the effective load, and improving the catalytic effect

Inactive Publication Date: 2019-12-13
SHANXI LUAN COAL BASED SYNTHETIC OIL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to insufficient supply, the price of lump coal has been rising year after year, causing the production cost of Lurgi furnace users to continue to rise, and corporate profits are almost squeezed out.
The use of cheap pulverized coal to replace high-priced lump coal is generally considered to be an effective way to solve this problem, but the use of pulverized coal in the pressurized gasification process of the Lurgi furnace consumes a lot of energy, the amount of coal ash in the environment is large, and tail water treatment Increased difficulty

Method used

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  • Preparation method of gasification formed coke used for Lurgi furnace
  • Preparation method of gasification formed coke used for Lurgi furnace

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Experimental program
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Effect test

Embodiment 1

[0019] A preparation method of gasification coke for Lurgi furnace, specifically including the following steps:

[0020] a) The raw material is selected from the under-sieve coal produced by Lu'an Yuwu Coal Industry: pulverized coal is sieved, and the under-sieve coal with a 5mm sieve is crushed to a particle size of less than 3mm.

[0021] b) Take 5% of the weight of coal powder and mix it with the alkali metal carbonate coal gasification catalyst, and then add 10% of the binder step by step according to the proportion: first add asphalt and waste clay, and mix evenly with a double-shaft mixer; Then move the coal and binder mixture to the next double-shaft mixer, spray the ethanol aqueous solution to fully moisten and stir evenly; then move the material to the next double-shaft mixer, add dust-containing tar and stir evenly; the binder contains 50% asphalt , 40% waste clay and 10% dust tar.

[0022] c) Graphite is pressed into a block of 50x50x50cm, the coal obtained by the above s...

Embodiment 2

[0026] A preparation method of gasification coke for Lurgi furnace, specifically including the following steps:

[0027] a) The raw material is selected from the under-sieve coal produced by Lu'an Yuwu Coal Industry: pulverized coal is sieved, and the under-sieve coal with a 5mm sieve is crushed to a particle size of less than 3mm.

[0028] b) Mix the vanadium-based coal gasification catalyst with 6% of the pulverized coal weight with the coal, and then add 12% of the binder step by step according to the proportion: first add the asphalt and waste clay, use a double-shaft mixer to mix evenly; then mix the coal The mixture of material and binder is moved to the next double-shaft mixer, sprayed with ethanol solution to fully wet and stir evenly; then the material is moved to the next double-shaft mixer, dust-containing tar is added and mixed evenly; the binder contains 60% asphalt and 35% Waste white clay and 5% dust tar.

[0029] c) Graphite is pressed into a block of 50x50x50cm, the...

Embodiment 3

[0032] A preparation method of gasification coke for Lurgi furnace, specifically including the following steps:

[0033] a) The raw material is selected from the under-sieve coal produced by Lu'an Yuwu Coal Industry: pulverized coal is sieved, and the under-sieve coal with a 5mm sieve is crushed to a particle size of less than 3mm.

[0034] b) Take 4% of the vanadium-based coal gasification catalyst by weight of pulverized coal and mix it with the pulverized coal, and then add 3% of the binder step by step according to the proportions: first add asphalt and waste clay, mix well with a double-shaft mixer; then mix the coal The mixture of material and binder is moved to the next twin-shaft mixer, sprayed with ethanol aqueous solution to fully wet and stir evenly; then the material is moved to the next twin-shaft mixer, dust-containing tar is added and mixed evenly; the binder contains 70% asphalt and 25% Waste clay and 10% dust tar.

[0035] c) Graphite is pressed into a block of 50x5...

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Abstract

The invention relates to the technical field of coal gasification production, and discloses a preparation method of gasification formed coke for a Lurgi furnace. The method specifically comprises thefollowing steps: pulverized coal with the particle size smaller than 3 mm is taken as a raw material, a coal gasification catalyst and the pulverized coal are mixed, and an adhesive is added to obtaina mixture, wherein the weight of the adhesive is 3-12% of that of the pulverized coal; and graphite is pressed into blocks, the mixture and the graphite are bonded together through carbonization, wherein the carbonization heating rate is 3-10 DEG C/min, the final temperature is 800-900 DEG C, and the constant-temperature time is 1-2 hours. According to the method provided by the invention, the graphite is used as a carrier to effectively react with formed coke, so that coal ash is reduced, the tail water treatment difficulty is reduced, the coal gasification conversion efficiency can be improved, and the prepared formed coke has the characteristics of high mechanical strength, high thermal stability and high reaction activity.

Description

Technical field [0001] The invention relates to the technical field of coal gasification production, in particular to a method for preparing gasification coke for a Lurgi furnace. Background technique [0002] Coal gasification technology is the core technology to realize the clean conversion and utilization of coal. Through the gasification process, coal can be converted into clean energy and chemical gas products that are easier to use. The crushed coal pressurized fixed-bed gasification technology represented by Lurgi gasification relies on high gasification heat efficiency and low oxygen consumption, and the synthesis gas CH 4 Content and H 2 The advanced features of / CO are widely used in our country. However, due to insufficient supply, the price of lump coal has risen year after year, causing the production costs of Lucci furnace users to continue to rise, and corporate profits are almost squeezed out. The use of cheap pulverized coal to replace high-priced lump coal is g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04C10L5/10C10L5/12C10L5/16C10B53/08C10B57/04C10B57/06C10J3/02
CPCC10B53/08C10B57/04C10B57/045C10B57/06C10J3/02C10J2300/0906C10J2300/0909C10J2300/0913C10J2300/093C10J2300/0986C10L5/04C10L5/105C10L5/12C10L5/16C10L2290/02C10L2290/24C10L2290/28C10L2290/30C10L2290/32Y02P20/52
Inventor 李昌伦谭代福王进昌张一波魏亚军刘碧武韩世良刘伟
Owner SHANXI LUAN COAL BASED SYNTHETIC OIL
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