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A solid heat carrier coal gasification power storage system and method

A solid heat carrier, coal gasification technology, applied in the gasification process, granular/powder fuel gasification, production of combustible gas, etc., can solve the problems of environmental pollution, high investment cost and poor economy of electrolytic aluminum technology

Active Publication Date: 2019-07-23
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the current chemical energy storage technologies, electrolytic water hydrogen production technology has the advantages of environmental protection and no pollution, and can obtain high value-added hydrogen, but this technology has high investment costs and poor economic efficiency; electrolytic aluminum technology pollutes the environment seriously, and in Today, with excess aluminum production capacity, there is no advantage in power grid peak regulation through electrolytic aluminum technology

Method used

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  • A solid heat carrier coal gasification power storage system and method
  • A solid heat carrier coal gasification power storage system and method
  • A solid heat carrier coal gasification power storage system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0102] A solid heat carrier coal gasification electric energy storage method is to adopt such as figure 1 In the electric energy storage system shown, the main body of the fluidized bed pulverized coal gasifier used in the system is cylindrical, with a cross-sectional area of ​​4m 2 , the height is 9m; the electric heating element is an electromagnetic induction coil; the metal heat carrier is a small steel ball with a diameter of 1.2mm, which is filled in a fluidized bed pulverized coal gasifier, and the filling height is 6m. The energy storage method includes the following steps:

[0103] (1) Determine the peak-shaving amount of the power grid according to the actual power consumption in the off-peak period, and set the power load;

[0104] (2) Introduce electrical energy into the fluidized bed pulverized coal gasification furnace to heat the metal heat carrier until the temperature reaches 1000°C and remains constant;

[0105] (3) Put the pulverized coal and limestone into...

Embodiment 2

[0110] A solid heat carrier coal gasification electric energy storage method is to adopt such as figure 2 In the electric energy storage system shown, the main body of the fluidized bed pulverized coal gasifier used in the system is cylindrical, with a cross-sectional area of ​​4m 2 , the height is 9m; the electric heating element is a resistive heating body; the metal heat carrier is a small steel ball with a diameter of 1.2mm, which is filled in a fluidized bed pulverized coal gasifier, and the filling height is 6m. The energy storage method includes the following steps :

[0111] (1) Determine the peak-shaving amount of the power grid according to the actual power consumption in the off-peak period, and set the power load;

[0112] (2) Introduce electrical energy into the fluidized bed pulverized coal gasification furnace to heat the metal heat carrier until the temperature reaches 1000°C and remains constant;

[0113] (3) Put coal powder and limestone into the fluidized...

Embodiment 3

[0118] A solid heat carrier coal gasification electric energy storage method is to adopt such as figure 1 In the multiple sets of electric energy storage systems shown, the main body of the fluidized bed pulverized coal gasifier used in the multiple sets of systems is cylindrical, with a cross-sectional area of ​​4m 2 , the height is 9m; the electric heating element is an electromagnetic induction coil; the metal heat carrier is a small steel ball with a diameter of 1.2mm, which is filled in a fluidized bed pulverized coal gasifier, and the filling height is 6m. The energy storage method includes the following steps:

[0119] (1) Determine the peaking amount of the power grid according to the actual power consumption in the off-peak period, set the power load, and connect multiple sets of power grid peaking systems in parallel;

[0120] (2) Introduce electrical energy into the fluidized bed pulverized coal gasification furnace to heat the metal heat carrier until the temperature...

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Abstract

The invention provides an electric power storage system and method employing coal gasification of a solid heat carrier. The system comprises a power supply device, a fluidized bed powdered coal gasifier, a cyclone dust collector, an ash discharge classifier and a fine ash collecting chamber, wherein the power supply device is connected with the fluidized bed powdered coal gasifier; the fluidized bed powdered coal gasifier comprises a gasifier body; a metal heat carrier is contained inside the gasifier body and an electric heating element is arranged outside the gasifier body; a gas outlet of the gasifier body is connected with the cyclone dust collector; a feed opening of the cyclone dust collector is connected to a feeding inlet of the ash discharge classifier; a coarse ash outlet of the ash discharge classifier is connected with a material return opening; and a fine ash outlet of the ash discharge classifier is connected with the fine ash collecting chamber. The method comprises the steps of firstly heating the fluidized bed powdered coal gasifier until the temperature reaches 800-1300 DEG C by adopting the system; carrying out coal gasification reaction by using a preheating gasification agent mixed with pulverized coal and calcium carbonate mixed powder in the coal gasifier; and finally preparing a city gas or a chemical product from the high-temperature coal gas.

Description

technical field [0001] The invention relates to comprehensive utilization of power grid electric energy, in particular to a solid heat carrier coal gasification power storage system and method. Background technique [0002] At present, thermal power generation is the main power generation method in my country, and it will not change in the future. However, in recent years, with the improvement of people's living standards and the adjustment of industrial structure in our country, great changes have taken place in the power consumption structure of the whole society, resulting in an increasing peak-to-valley difference between major power grids. However, the regulation ability of the power grid itself is relatively weak. Therefore, when the installed capacity of generators is difficult to meet the peak power consumption of the grid load, it is necessary to adopt the method of power rationing to ensure the stable operation of the generator set, and when the power consumption i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/56C10J3/72
CPCC10J3/56C10J3/72C10J2300/093C10J2300/1246C10J2300/1671
Inventor 于庆波杨凡秦勤段文军
Owner NORTHEASTERN UNIV LIAONING
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