Fixed bed reactor beneficial to thermal conversion analysis of coal and biomass
A fixed-bed reactor and biomass technology, applied in thermal analysis of materials, biofuels, and analytical materials, etc., can solve problems such as lack of experimental devices and reactors, understanding of various processes, complex analysis processes, etc., to achieve simple structure, Effects of Avoiding Interactions and Simplifying Action Relationships
Pending Publication Date: 2022-06-03
NINGXIA UNIVERSITY +1
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Problems solved by technology
[0003] The comprehensive effect of the above-mentioned processes makes the analysis process of its thermal conversion very complicated. The existing technology is limited by the reactor and experimental equipment, which is not conducive to understanding various processes separately. There are no experimental equipment and reactions that can be used to extract these processes. device
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[0041] 3 g of biomass and 3 g of coal samples were placed on the sieve plate 4 and placed on both sides of the partition plate 5, respectively. The electric heating furnace on the outer wall of the fixed-bed reactor body was heated to 750°C at a rate of 15°C / min, and kept for 40min in a nitrogen atmosphere (300mL / min); wherein, the hole diameter of the gas through hole I9 on the sieve plate 4 was is 0.2mm, and the number is 30; the aperture of the gas through hole II10 on the separator 5 is 0.3mm, and the number is 24;
[0042] The gas outlet 3 below the fixed bed reactor is connected to a cold trap, and a part of the gas product obtained after the reaction in the volatile matter mixing zone is collected by the cold trap condensation and analyzed by GCMS, and the other part of the uncondensed small molecule gas is passed into the gas chromatograph for composition. For analysis, the semi-coke in the feed zone in the reactor was collected and weighed for analysis.
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Abstract
The invention provides a fixed bed reactor beneficial to coal and biomass thermal conversion analysis. The fixed bed reactor comprises a reactor body, a gas inlet and a gas outlet, a sieve plate is fixedly arranged in an inner cavity of the reactor body in the radial direction and divides the inner cavity of the reactor body into a raw material area and a volatile component mixing area which are sequentially connected from top to bottom in the axial direction; wherein the gas inlet is formed in the top of the raw material area, and the gas outlet is formed in the bottom of the volatile component mixing area; a partition plate is vertically arranged on the sieve plate; gas through holes are formed in the sieve plate and the partition plate, and the aperture of each gas through hole is smaller than the particle size of the coal sample and the biomass. By adjusting the structure of the fixed bed reactor, the interaction relation between coal and biomass volatile components in the raw material area is independently known, and analysis of the thermal conversion process of coal and biomass is facilitated.
Description
technical field [0001] The invention relates to a fixed-bed reactor, in particular to a fixed-bed reactor which is beneficial to the thermal conversion analysis of coal and biomass. Background technique [0002] At present, the development of biomass and coal thermal gasification technology is one of the important ways to solve the problem of efficient and clean resource utilization of biomass and saving coal resources. However, the complex interaction between biomass and coal during co-pyrolysis or co-gasification has seriously hindered the understanding of thermal conversion processes and the development of technological processes. In the thermal conversion process of coal and biomass, it includes the interaction between biomass volatiles and coal volatiles in the raw material layer, the interaction between semi-coke, and the catalytic effect of alkali metals in biomass on coal conversion, etc. action process. [0003] The comprehensive effect of the above processes make...
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IPC IPC(8): G01N25/00
CPCG01N25/00Y02E50/10
Inventor 王焦飞许广宇宋旭东唐广军白永辉潘勇苏暐光张俊先祝贺于广锁赵矿生
Owner NINGXIA UNIVERSITY