High thermal stability synthetic ammonia gasification moulded coal and preparation method thereof

A high thermal stability, synthetic ammonia technology, applied in the preparation/separation of ammonia, petroleum industry, solid fuel, etc., can solve the problems of reducing gas production, poor thermal stability, affecting gas production rate, etc., to increase gas production, improve heat Stability, the effect of reducing the carbon content of briquettes

Active Publication Date: 2009-10-14
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the briquettes produced by the above methods have a certain cold strength, the thermal strength is generally low. The thermal stability of the briquettes refers to the degree of stability of the briquettes to heat during the high-temperature combustion process or gasifica

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Select Shanxi Ningwu fat coal, dry distillation under the condition of 450°C for 30 minutes without air, and crush it to less than 1mm. 7.8 kg of Jincheng anthracite, 0.05 kg of modified cornstarch, 0.95 kg of dry-distilled fat coal, and 1.2 kg of water were used to form the mixture after stirring evenly, and then dried at 150°C. Using XY-01 type coal pressure detector, CTM300 type intelligent electric furnace and PTC-2 type ash melting point tester to detect the indicators of finished products are:

[0017] Compressive strength: 90kg / ball, thermal strength: 47kg / ball, thermal stability: 84%, ash melting point T 2 : 1311°C.

Embodiment 2

[0019] The fat coal from Puxian County, Shanxi Province was selected, and it was dry-distilled under the condition of 450°C for 30 minutes without air, and crushed to less than 1mm. 8.2 kg of Jincheng anthracite, 0.08 kg of modified potato starch, 0.57 kg of dry-distilled fat coal, and 1.15 kg of water were used to form the mixture after stirring evenly, and then dried at 150°C. Using XY-01 type coal pressure detector, CTM300 type intelligent electric furnace and PTC-2 type ash melting point tester to detect the indicators of finished products are:

[0020] Compressive strength: 86kg / ball, thermal strength: 51kg / ball, thermal stability: 87%, ash melting point T 2 : 1298°C.

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PUM

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Abstract

The invention provides a high thermal stability synthetic ammonia gasification moulded coal, which is made from the following components by weight: 76.0-84.7 of anthracite powder, 0.3-1.0 of added modified starch, 4-10 of fat coal powder processed by low temperature carbonization and 11-13 of water. Due to the added modified starch, the synthetic ammonia gasification moulded coal effectively enhances the cold strength of moulded coal and effectively improves the thermal stability of moulded coal with the added fat coal processed by low temperature carbonization.

Description

technical field [0001] The invention relates to a gas-making briquette, in particular to a synthetic ammonia gas-making briquette and a preparation method thereof. Background technique [0002] With the continuous development of coal mechanical mining, the output of lump coal is getting lower and lower, especially the high-quality anthracite lumps used for fertilizer plant gas production are in short supply and the price is relatively high. At present, in order to save production costs, chemical fertilizer factories generally use pulverized coal to make briquettes as raw materials for ammonia synthesis. Most of the additives use sodium humate solution, which is mixed with anthracite powder, stirred, retting, and then made into briquettes or coal sticks under high pressure. Put it into the oven after drying. [0003] Although the briquettes produced by the above methods have a certain cold strength, the thermal strength is generally low. The thermal stability of the briquett...

Claims

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Application Information

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IPC IPC(8): C10L5/04C10L5/14C10L9/10C01C1/04
Inventor 程芳琴路广军薛宝其杨凤玲李莹英
Owner SHANXI UNIV
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