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Process for coking biomass

A biomass and biomass particle technology, applied in the fields of biofuels, coke ovens, petroleum industry, etc., can solve the problems of inability to realize large-scale application of biomass and low utilization of tamping coke ovens, and achieve resource utilization, Easy to push the focus, improve the quality of the effect

Inactive Publication Date: 2017-07-07
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is to overcome the defects that the existing technology cannot realize the large-scale application of bi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Dry the straw to a moisture content of 15wt%, crush it and press it under 5MPa to make biomass particles with a density of 1.2g / cm 3 , the volume is 25cm 3 ;

[0033] (2) Mix biomass particles with a mass ratio of 4:6 and 1 / 3 coking coal to form a mixture, and use tamping equipment to tamp the mixture to obtain a cuboid biomass molding material. Biomass particles are embedded on the surface, so that each biomass particle is covered with 1 / 3 coking coal;

[0034] (3) Push the biomass molding material into a stamped coke oven for coking treatment, control the coking temperature to 1050° C., and coking time to 16 hours, collect overflowing crude gas, tar and crude benzene, and obtain coke as a by-product.

[0035] The amount of crude gas obtained in this embodiment is 410Nm 3 / t molding material, the amount of tar is 33kg / t molding material, the amount of crude benzene is 10.5kg / t molding material, the amount of coke is 610kg / t molding material, in terms of mass, th...

Embodiment 2

[0037] (1) Dry the straw to a moisture content of 13wt%, crush it and press it under 40MPa to make biomass particles with a density of 1.3g / cm 3 , the volume is 25cm 3 ;

[0038] (2) Mix biomass granules with a mass ratio of 6:4 and additives to form a mixture, and use tamping equipment to tamp and shape the mixture to obtain a cuboid biomass molding material, which is uniform inside and on the surface. Biomass particles are embedded, so that the outside of each biomass particle is coated with the auxiliary agent;

[0039] Wherein, the auxiliary agent is a mixture formed by mixing fat coal and sub-bituminous coal at a mass ratio of 7:3, the G value of the sub-bituminous coal is 45, and the volatile content is greater than 40%;

[0040] (3) Push the biomass molding material into a stamped coke oven for coking treatment, control the coking temperature to 1025° C., and coking time to 18 hours, collect overflowing crude gas, tar and crude benzene, and obtain coke as a by-product. ...

Embodiment 3

[0043] (1) Dry the straw to a moisture content of 17wt%, crush it and press it under 22.5MPa to make biomass particles with a density of 1.4g / cm 3 , the volume is 25cm 3 ;

[0044] (2) Mix biomass particles with a mass ratio of 1:1 and an organic binder to form a mixture, and use tamping equipment to tamp the mixture to obtain a rectangular parallelepiped biomass molding material. Biomass particles are embedded on the surface, so that the outside of each biomass particle is coated with the organic binder;

[0045] Wherein, the organic binder is a residual oil with a dry distillation weight loss of 40% at 850°C in the absence of air;

[0046] (3) Push the biomass molding material into a stamped coke oven for coking treatment, control the coking temperature to 1000° C., and coking time to 16 hours, collect overflowing crude gas, tar and crude benzene, and obtain coke as a by-product.

[0047] The amount of crude gas obtained in this embodiment is 450Nm 3 / t molding material,...

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Abstract

The invention provides a process for coking biomass. The process includes mixing biomass particles and auxiliaries with one another to obtain mixtures and carrying out pressure molding on the mixtures to obtain molded materials; carrying out coking treatment on the molded materials to obtain crude gas, tar, crude benzene and coke. The auxiliaries are medium-rank coal or mixtures of medium-rank coal and low-rank coal or organic binders or mixtures of organic binders and low-rank coal. The process for coking the biomass has the advantages that raw material costs of oil gas and coke products can be reduced, the biomass can be effectively recycled, and accordingly the process has a substantial economic benefit and a certain social benefit; the problem of limited application of existing biomass due to deficiency of large-scale industrial equipment in the prior art can be solved by the aid of the process, and the problems of low use degrees of stamp-charging coke ovens and excess production capacity of the coking industry can be solved.

Description

technical field [0001] The invention relates to the field of development and utilization of biomass energy, in particular to a technology for coking biomass in a stamped coke oven. Background technique [0002] With the rapid growth of my country's energy demand and the depletion of traditional fossil fuels, the dominant position of coal as my country's energy production and consumption will not change fundamentally for a long period of time in the future. At present, the use of coal is mainly based on combustion, and coal will emit a large amount of dust, carbon monoxide, sulfur or nitrogen oxides and other pollutants during the combustion process, resulting in continuous deterioration of the ecological environment and causing increasingly serious environmental problems. Therefore, the development of clean renewable energy has become an important way to solve the energy crisis and environmental pollution. [0003] Biomass energy is the energy stored in biomass by green pla...

Claims

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Application Information

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IPC IPC(8): C10B53/02C10B53/08C10B57/06
CPCC10B53/02C10B53/08C10B57/045C10B57/06Y02E50/10
Inventor 林科杜明来赵文涛马芳白洪彬刘彦芳
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD