Device for preparing hydrogen-rich gas by gasifying biomass under catalysis of high-temperature metallurgical slag particles and method

A catalytic gasification and metallurgical slag technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve problems such as low quality, poor recovery efficiency of waste heat in slag process, easy carbon deposition and deactivation of catalysts, etc., and achieve hydrogen content High, avoiding secondary energy consumption, avoiding the effect of surface area carbon deactivation

Active Publication Date: 2014-12-10
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0005] In view of the above-mentioned problems existing in the prior art, the object of the present invention is to provide a method and device for preparing hydrogen-rich gas by catalytically gasifying biomass with high-temperature metallurgical slag particles as a heat carrier. As a heat carrier and catalyst, metallurgical slag particles are fed into steam to gasify biomass to produce hydrogen-rich gas, so as to effectively solve the problems of poor waste heat recovery efficiency and low quality in the existing dry process of slag treatment, as well as the solid heat carrier gasification process. The need for external heat supply and the problem that the catalyst is prone to carbon deposition and deactivation

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  • Device for preparing hydrogen-rich gas by gasifying biomass under catalysis of high-temperature metallurgical slag particles and method

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Embodiment 1

[0034] Example 1: see figure 1 , a device for producing hydrogen-rich gas by catalytic gasification of biomass with high-temperature metallurgical slag particles, including a slag rotary granulation device 1, a high-temperature slag particle storage room 5, a downcomer reactor 11, a steam generator 10, and a screw feeder for biomass raw materials device 13, separator and hydrogen-rich gas collector 17.

[0035]The high-temperature slag storage chamber 5 and the biomass raw material screw feeder 13 are respectively located above the downcomer reactor 11, the separator is located under the downcomer reactor 11, and the steam generator 10 and the hydrogen-rich gas collector 17 are respectively located in the downcomer reactor. Both sides of the tube reactor 11; the slag rotary granulation device 1 is provided with a granulated slag sieve 2, and the granulated slag sieve 2 divides the molten slag rotary granulation device 1 into two parts, which are located in the granulated sla...

Embodiment 2

[0040] Example 2: The method for producing hydrogen-rich gas by catalytic gasification of biomass with high-temperature metallurgical slag particles adopts the device for producing hydrogen-rich gas by catalytic gasification of biomass with high-temperature metallurgical slag particles as described in Example 1. The specific steps are as follows:

[0041] 1) Fully pretreat the biomass raw material, including drying and crushing, so that the moisture content of the biomass raw material is lower than 10%, and the particle size of the biomass particle is less than 1mm, and then put the biomass raw material into the biomass raw material storage room 12.

[0042] 2) After being processed by the slag rotary granulation device 1, the high-temperature metallurgical slag particles with a particle size between 2 and 7mm enter the high-temperature slag particle storage room 5, which facilitates the separation of biomass residual carbon and high-temperature metallurgical slag particles, a...

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Abstract

The invention relates to a device for preparing hydrogen-rich gas by gasifying a biomass under the catalysis of high-temperature metallurgical slag particles and a method. The device comprises a downer reactor, a high-temperature slag particle storage chamber, a spiral biomass raw material feeder, a separator, a steam generator and a hydrogen-rich gas collector, wherein the high-temperature slag particle storage chamber and the spiral biomass raw material feeder are located above the downer reactor and are communicated with the top of the downer reactor; the separator is located below the downer reactor and is communicated with the bottom of the downer reactor; and the steam generator and the hydrogen-rich gas collector are located at two sides of the downer reactor and are respectively communicated with the downer reactor. The method in which the device is applied comprises the steps of respectively adding high-temperature metallurgical slag particles, biomass raw materials and steam into the downer reactor through a rotary molten slag granulating device, the spiral biomass raw material feeder and the steam generator; carrying out gasification reaction on the biomass raw materials under the catalysis of the high-temperature metallurgical slag particles to generate hydrogen-rich gas; and storing the hydrogen-rich gas into the hydrogen-rich gas collector. By using the method, waste heat of metallurgical slag is recycled in a chemical energy way, so that the recovery rate of the waste heat is relatively high, and the problems of low waste heat recovery rate and low recovery quality of a dry-method metallurgical slag treatment process are solved.

Description

technical field [0001] The invention relates to the fields of metallurgical engineering, energy conversion, environmental protection and energy saving, mainly relates to energy saving and emission reduction utilizing metallurgical process, and biomass energy conversion, and in particular to a device and method for producing hydrogen-rich gas by catalytic gasification of biomass with high-temperature metallurgical slag particles. Background technique [0002] The metallurgical industry is the pillar industry of my country's national economic development, and it is also a large energy-consuming, high-pollution, high-emission industry, facing severe pressure on energy conservation and emission reduction. Among them, metallurgical slag is the main waste discharged in the process of metal and alloy smelting. The discharged slag is not only huge in quantity, but also rich in high-quality heat. For example, the blast furnace discharges about 350kg of slag for every ton of pig iron ...

Claims

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Application Information

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IPC IPC(8): C01B3/32
CPCY02P20/129
Inventor 秦跃林杨艳华朱光俊张倩影邓能运高绪东
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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