Biomass hydropyrolysis-gasification co-production process and system

A technology of biomass and biomass raw materials, which is applied in the petroleum industry and the manufacture of combustible gas, etc., can solve the problems of low conversion rate of biomass raw materials, poor quality of combustible gas and bio-oil, high tar content and high oxygen content, and reduce biomass Effects of coke rate, increase in light fraction yield, and increase in liquid yield

Active Publication Date: 2022-07-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the invention achieves the purpose of polygeneration, the quality of combustible gas and bio-oil is poor and the value is low
CN201711382296.8 discloses a biomass polygeneration method and system based on a triple medium and low temperature fluidized bed. The invention uses a triple fluidized bed to classify and utilize biomass raw materials, and realizes drying and pyrolysis of biomass raw materials , staged conversion of gasification, but this invention also has the problem of poor product quality, the tar content in the gas and the oxygen content in the liquid are high, and the conversion rate of biomass raw materials is not high

Method used

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  • Biomass hydropyrolysis-gasification co-production process and system
  • Biomass hydropyrolysis-gasification co-production process and system
  • Biomass hydropyrolysis-gasification co-production process and system

Examples

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Effect test

Embodiment 1

[0051] using the present invention figure 1 The flow shown in which the heavy ends and hydrogen after hydrogenation both enter the pyrolysis reactor. The raw material is Larch from Northeast China. Before the experiment, the raw material is fully pulverized, sieved to 40-60 mesh, and fully dried until the moisture content in the raw material is less than 5wt.%; It enters the pyrolysis reactor together with the hydrogenated heavy fractions and hydrogen, and the pyrolysis reaction occurs under the catalysis of the oil-soluble molybdenum-based catalyst; the pyrolyzed volatiles enter the rectification tower, and the semi-coke enters the gasification reactor and The water vapor undergoes a gasification reaction under the action of a gasification catalyst, and the gasification catalyst refers to a modified calcium oxide adsorbent, that is, the aluminum chloride solution and the calcium chloride solution are in accordance with Al / Ca=3:10 (mol / mol ), and then spray pyrolysis at 1000 ...

Embodiment 2

[0053] using the present invention figure 1 As shown in the process, wherein the heavy fractions enter the pyrolysis reactor after hydrogenation, and the hydrogen does not enter the pyrolysis reactor. The raw material is Larch from Northeast China. Before the experiment, the raw material is fully pulverized, sieved to 40-60 mesh, and fully dried until the moisture content in the raw material is less than 5wt.%; It enters the pyrolysis reactor together with the hydrogenated heavy fraction, and undergoes a pyrolysis reaction under the catalysis of the oil-soluble molybdenum-based catalyst; the pyrolyzed volatiles enter the rectification tower, and the semi-coke enters the gasification reactor and water vapor. A gasification reaction occurs under the action of a gasification catalyst. The gasification catalyst refers to a modified calcium oxide adsorbent, that is, the aluminum chloride solution and the calcium chloride solution are mixed according to Al / Ca=3:10 (mol / mol) , and t...

Embodiment 3

[0055] using the present invention figure 1 Shown in the process, wherein the heavy fraction does not enter the pyrolysis reactor after hydrogenation, and hydrogen enters the pyrolysis reactor. The raw material is Larch from Northeast China. Before the experiment, the raw material is fully pulverized, sieved to 40-60 mesh, and fully dried until the moisture content in the raw material is less than 5wt.%; It enters the pyrolysis reactor together with hydrogen, and the pyrolysis reaction occurs under the catalysis of the oil-soluble molybdenum-based catalyst; the volatile matter after pyrolysis enters the rectification tower, and the semi-coke enters the gasification reactor and the water vapor in the gasification catalyst. A gasification reaction occurs under the action of the gasification catalyst, and the gasification catalyst refers to a modified calcium oxide adsorbent, that is, the aluminum chloride solution and the calcium chloride solution are mixed according to Al / Ca=3:...

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Abstract

The invention discloses a biomass hydrogen pyrolysis-gasification co-production process and system. The process comprises the following steps: treating a biomass raw material and gas to obtain purified gas and a solid-phase material; pyrolyzing the solid-phase material to obtain pyrolyzed high-temperature oil gas and biological semicoke; carrying out gasification reaction on the biological semicoke to obtain charcoal and gasified high-temperature oil gas; treating the pyrolyzed high-temperature oil gas and the gasified high-temperature oil gas to obtain a gas phase, a light fraction and a heavy fraction; and carrying out contact treatment on the gas phase and the light fraction to obtain gas and a tar-rich light fraction. According to the present invention, the hydrogen-containing pyrolysis-gasification coupling process is adopted, such that the carbon conversion rate of the biomass and the liquid product yield are substantially improved, and the oxygen content of the product is reduced; the process flow is simple, the utilization rate of carbon atoms is high, products are diversified, flexible and adjustable, the added value is high, energy recycling is sufficient, and economical efficiency is high.

Description

technical field [0001] The invention belongs to the field of biomass energy utilization, in particular to a process and a system for treating biomass by a pyrolysis-gasification combined process. [0002] technical background [0003] Biomass is a kind of green renewable energy with a wide range of sources, huge reserves and environmental friendliness. The biomass produced by photosynthesis in the world is about 170 billion tons every year, and its energy is equivalent to 10 times that of the world's main fuel energy, but the amount of biomass used as energy is less than 1% of the total biomass. In my country, more than 800 million tons of agricultural and forestry wastes are produced every year, but these agricultural and forestry wastes have not been fully utilized. Some of them are directly discarded, causing waste of resources, and some are directly incinerated, causing air pollution and even causing fires. The existing comprehensive utilization of biomass is quite exten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/64C10J3/72C10J3/84
CPCC10J3/64C10J3/723C10J3/84C10J2300/0916C10J2300/092C10J2300/1603C10J2300/0976C10J2300/0986C10J2300/1807
Inventor 王博宋永一张长安张彪王鑫吴斯侃
Owner CHINA PETROLEUM & CHEM CORP
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