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High-activity gasification briquette and production method thereof

A gasification type, high activity technology, applied in the field of briquette and manufacturing, can solve the problems that hinder the sustainable development of fixed bed type coal gasification technology, low gasification efficiency and gas yield, and low activity of briquette, etc. The effect of increasing coal gasification activity, inhibiting coal ash melting, and improving uniform distribution

Active Publication Date: 2014-04-30
张济宇 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The gasification briquettes (briquettes, briquettes or coal rods, etc.) produced by inorganic, organic or composite binders in China are used in the process of gas production in industrial fixed-bed gasifiers. The most prominent problem is - briquettes Serious disadvantages such as low activity, low gasification efficiency and gas yield, limited activity of raw coal and high coal consumption have become the key bottlenecks hindering the sustainable development of fixed bed coal gasification technology in my country

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First, prepare a sufficient amount of composite binder. That is, at a temperature of 60°C, slowly add humic acid dry powder with a weight ratio of 45wt% into 50wt% hot water, stir for 60 minutes, then slowly add 5wt% industrial liquid alkali (NaOH), and continue to stir continuously. And kept at 60° C. for 3 hours to react to obtain a composite binder, at this time, the composite binder as a whole is counted as one component.

[0028] Then, take 1.5 parts by weight of anti-melting agent ore powder (potassium feldspar) with acidic oxide as the main component, 0.5 parts by weight of dispersant (sodium dodecylbenzenesulfonate), and take the amount of alkali metal Na as the calculation unit of liquid 1.2 parts by weight of alkali (NaOH) catalyst and 7 parts by weight of composite binder were kept stirring and mixed for 50 minutes in a stirring tank maintained at 60°C to make a slurry-like mixed liquid, and then sprayed into the horizontal double-roller screw in sections Bl...

Embodiment 2

[0031] First, prepare a sufficient amount of composite binder. That is, at a temperature of 90°C, slowly add humic acid dry powder with a weight ratio of 40wt% to 45wt% hot water, stir for 30 minutes, then slowly add 15wt% industrial liquid alkali (NaOH), and continue to stir continuously. And kept at 90° C. for 2 hours to react to obtain a composite binder, at this time, the composite binder as a whole is counted as one component.

[0032] Then, take 3 parts by weight of anti-melting agent ore powder (mullite) with acidic oxide as the main component, 0.1 part by weight of complexing agent (sodium pyrophosphate), and soda ash (Na 2 CO 3 ) 1.5 parts by weight of catalyst, and 8 parts by weight of composite binder, kept stirring and mixing for 20 minutes in a stirring tank maintained at 90 °C to make a slurry-like mixed liquid, and then sprayed into horizontal double-roller screw mixer and 87.4 parts by weight of Fujian high metamorphic anthracite pulverized coal (Jianxin mixe...

Embodiment 3

[0035] First, prepare a sufficient amount of composite binder. That is, at a temperature of 70°C, slowly add humic acid dry powder with a weight ratio of 42wt% to 47wt% hot water, stir for 40 minutes, then slowly add 8wt% industrial liquid alkali (NaOH), and continue to stir continuously. and kept at 70°C for 2.5 hours to prepare a composite binder;

[0036] Then, 1.5 parts by weight of anti-melting agent ore powder (kaolin) with acidic oxide as the main component, 0.1 part by weight of dispersant (sodium dodecylbenzenesulfonate), and liquid caustic soda ( 1.2 parts by weight of NaOH) catalyst, and 7 parts by weight of composite binder in a stirring tank kept at 70 ° C for 30 minutes, then made into a slurry-like mixed liquid, and then sprayed into horizontal double-roller screw mixer and 90.2 parts by weight of Fujian high metamorphic anthracite pulverized coal (Longyan coal, its ash content A ad =18.73%, and particle size d pThe amount of p <1mm is 72%), fully stirred and...

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Abstract

According to proportion in part by weight, a high-activity gasification briquette consists of 85 to 92 parts of pulverized coal, 0.1 to 0.5 parts of dispersant, 1 to 6 parts of fusion retardant, 0.8 to 1.8 parts of alkali catalyst calculated according to the amount of alkali metal and 6 to 10 parts of compound binder. The high-activity gasification briquette has the advantages of high gasification activity, high coal gas productivity and low production cost.

Description

technical field [0001] The invention belongs to a molded coal and a manufacturing method, in particular to a high-activity industrial gasification molded coal and a manufacturing method. Background technique [0002] The production mode of using fixed bed gasification to replace lump coal raw materials with briquettes to produce raw materials such as industrial fuel gas, synthetic ammonia, synthetic oil, fuel cells, methanol and various chemical products is suitable for the long-term and stable development of my country's coal chemical industry and the cleanliness The promotion and demand of coal gasification technology has special and important practical significance. The mixing process of briquette raw materials is obviously restricted by the coal resource market and the regional supply and demand relationship. Therefore, making full use of low-priced pulverized coal in the region to mix briquettes for gas production has become the most important means to reduce production ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/02C10L5/04C10L5/06
Inventor 张济宇王小宁
Owner 张济宇
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