A kind of hydrogen supply additive and its preparation and application

An additive and hydrogen supply technology, which is used in the petroleum industry, coke ovens, etc., and can solve the problem that sulfur cannot be removed in a directional manner.

Active Publication Date: 2021-09-14
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the coking process of high-sulfur coking coal alone or coal blending, the active hydrogen required for the decomposition of morphological sulfur and the conversion of active sulfur into sulfur-containing gas does not match the amount of active hydrogen produced by the thermal decomposition of coking coal itself. Therefore, the current The high-sulfur coal blending process still has the problem that sulfur cannot be removed directionally

Method used

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  • A kind of hydrogen supply additive and its preparation and application
  • A kind of hydrogen supply additive and its preparation and application
  • A kind of hydrogen supply additive and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A long-flame coal is selected, and its volatile content V daf is 37.62%, sulfur S t,d 0.36%, Ash A d It is 4.26%, particle size> 0.5mm.

[0040] With ZnCl 2 As a floating and sinking medium, after flotation and classification, the density is less than 1.35g / cm 3 Coal powder, sieved to obtain particle size ≤ 2mm, volatile V daf 36.81%, sulfur S t,d 0.33%, ash A d It is a component of 1.11wt%, which is used as the regulator HV-1.

[0041] When HV-1 is coked separately, its pyrolytic desulfurization rate is 40.38%.

[0042] Weigh 3.0kg of waste internal combustion engine oil, 3.5kg of methyl silicone oil, and 1.5kg of sodium dodecylbenzenesulfonate, and add them together to 2.0kg of water, stir thoroughly, and mix evenly to obtain Primary Additive 1.

[0043] Take 4.0kg of primary additive 1 and evenly spray it into 6.0kg of regulator HV-1 to obtain hydrogen-donating additive 1.

Embodiment 2

[0045] Weigh 2.5 kg of waste internal combustion engine oil, 3.5 kg of methyl silicone oil, and 2.0 kg of sodium dodecyl naphthalene sulfonate, and add them together to 2.0 kg of water, fully stir, and mix evenly to obtain primary additive 2.

[0046] Take 5.0 kg of primary additive 2 and evenly spray it into 5.0 kg of regulator HV-1 prepared in Example 1 to obtain hydrogen-donating additive 2.

Embodiment 3

[0048] Select a gas coal and detect its volatile content V daf is 36.62%, sulfur S t,d 0.37%, Ash A d It is 5.42%, particle size> 0.5mm.

[0049] With ZnCl 2 As a floating and sinking medium, after flotation and classification, the density is less than 1.35g / cm 3 Coal powder, sieved to obtain particle size ≤ 2mm, volatile V daf 35.32%, sulfur S t,d 0.32%, Ash A d It is a component of 1.83wt%, and it is used as the regulator HV-2.

[0050] When HV-2 is coked separately, its pyrolytic desulfurization rate is 41.87%.

[0051] Weigh 3.0 kg of waste internal combustion engine oil, 4.0 kg of methyl silicone oil, and 1.5 kg of sodium lignosulfonate, add them into 1.5 kg of water, stir well, and mix evenly to obtain primary additive 3.

[0052] Take 4.0kg of primary additive 3 and evenly spray it into 6.0kg of regulator HV-2 to obtain hydrogen-donating additive 3.

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Abstract

The invention relates to a hydrogen-supplying additive for directional removal of sulfur in high-sulfur coking coal blending and coking, which consists of 45-60wt% regulator and 40-55wt% primary additive, and the regulator is composed of one or more The high volatile coal obtained by pretreatment has a particle size of ≤2mm, an active component content of ≥70wt%, and a volatile content of V daf ≥30wt%, Sulfur S t,d ≤0.7wt%, Ash A d ≤7wt% coal powder component, the primary additive is composed of 10~30wt% waste lubricating oil and / or lubricating base oil, 20~40wt% silicone oil, 5~25wt% anionic emulsifier and 5~25wt% water liquid. Adding the hydrogen-supplying additive to high-sulfur coking coal and other coking coal blending coal blending for coking can realize the directional removal of sulfur in the coking process under the premise of ensuring coke quality, and achieve rational and efficient use of high-sulfur coking coal resources. The purpose of reducing the sulfur content of coke.

Description

technical field [0001] The invention belongs to the technical field of coal blending and coking, and relates to a hydrogen-supply additive used when high-sulfur coal is blended for coking. The hydrogen-supply additive can be used for directional removal of sulfur in high-sulfur coal. Background technique [0002] The proven reserves of coking coal in my country are about 275.86 billion tons, which is less than one-third of the country's total coal reserves, and the distribution is extremely uneven, mainly concentrated in the northern region. Shanxi Province has great advantages in coking coal resource reserves and is the largest coking coal production base in my country. The proven reserves account for more than half of the country's total coking coal reserves. [0003] Specific to the distribution of various coal types in coking coal, the most abundant reserves of coking coal in my country are gas coal and 1 / 3 coking coal, accounting for 45.73% of the proven reserves of cok...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/06
CPCC10B57/06
Inventor 王美君申岩峰谢克昌任秀蓉常丽萍孔娇王建成鲍卫仁
Owner TAIYUAN UNIV OF TECH
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