Introduction to IGCC clean coal power generation technology

Abstract: introduction to type IGCC clean coal power generation technology information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Abstract: with the development of energy and environmental technology, type IGCC clean coal power generation technology will be developed in our country. This paper analyzes the whole coal gasification gas - The basic principle of steam combined cycle, and introduces coal gasification, purification equipment and technology. The whole. More flow meter manufacturers choose model price quote you are welcome to inquire, below is the article details introduction to type IGCC clean coal power generation technology. With the development of energy and environmental technology, type IGCC clean coal power generation technology will be developed in our country. This paper analyzes the whole coal gasification gas - The basic principle of steam combined cycle, and introduces coal gasification, purification equipment and technology. Integrated gasification gas & ndash; Steam combined cycle ( IGCC） Is the west in the 70 s oil crisis to research a kind of clean coal power generation technology, its technical concepts and lines is very clear, that is: coal gasification in the gasifier become the calorific value of gas, and then by processing, the ash content, sulfur compounds in the crude gas purge out harmful material such as, for to burn coal gasification combined cycle in the work, so as to achieve the goal of oil by coal generation. So, can achieve indirectly in the coal gasification in a loop of the power supply efficiency is very high the gasification of solid fuel coal. In this technique, gas turbine, waste heat boiler and steam turbine parts are normal mature technology, the difference is mainly coal gasification and gas purification equipment. It is hoped that through this technique, can not only improve the power efficiency of coal-fired power plants, and can solve the problem of environment pollution brought by the coal. 1 principle of coal gasification technology. Is sent through proper processing of coal gasifier, under certain temperature and pressure through gasification agent to join, flow in a certain way, into fuel gas, or gas. Coal gasification mainly produce CO and H2, and before the burning gas purification device removal by gaseous sulfur and nitrogen. Coarse of hydrogen sulfide gas, can be in the gas is cooled by chemical absorption or physical adsorption removal. The purification process 90% of sulfur removal. In addition, can also be added limestone solid sulfur to the gasification process, desulfurization is 90%. Gas is nitrogen removal, the formation of ammonia can be recycled. 1 coal gasification unit coal gasification unit is divided into fixed bed gasifier and fluidized bed gasifier and three flow bed gasifier. Integrated gasification gas & ndash; Equipment is practical: requirements gasifier the less processing operations, the reliability and the availability of the equipments of single furnace production capacity is big, easy maintenance, and equipment manufacturing and maintenance costs low. The adaptability of raw materials: coal gasifier can add the more variety, including coke and coal, and can switch to reuse and petroleum coke and other raw materials. Simplicity: requirements of coal gasification process system in the gasifier gas produced by excluding by-product tar and phenolic harmful substances, such as coal dust carrying amount should be very few, so that the gas purification system is simplified. D, and the match in the operation condition of power generation equipment: for gasifier has the ability to adapt to changing load. It can quickly stop furnace, and can quickly to start again. 2. 2 IGCC in the gasifier performance of IGCC gasifier comparison ( See table 1 and table 2) 。 3 used in IGCC gas turbine combined cycle in IGCC can be used in a single shaft gas turbine as the prime mover of power generation equipment. Current power generation with gas turbine has developed more mature, but, as it must and IGCC process organically combined as a whole, and directly to burn gas, therefore, must be proper transformation, the existing gas turbine can meet the need of the work of IGCC. Due to the gas turbine and IGCC system in air separation system the different links, and burning of the different varieties of synthetic gas, transformation contents of gas turbine is different also. The following heat value gas in gas turbine burning, for example as a simple introduction. When coal gasifier to the gas turbine with calorific value of coal gas, the gas turbine compressor and gas turbine without technical renovation, the gas turbine combustor is necessary to make appropriate transformation. On the one hand, in order to meet the requirements of calorific value of gas combustion characteristic, on the other hand is to meet the requirements of lower NOx in the exhaust emissions. Practice shows that when the original burning natural gas heat value gas in gas turbine to burn, the main combustion chamber geometry, such as the diameter and length of flame tube without change, need to change is the gas nozzle and the size of the gas supply pipe. The flame tube of a burning zone air allocation amount changes little, so the overall size of the combustion chamber without major changes. In order to reduce NOx emissions in the process of combustion, which can be used in the combustion chamber in front of the additional gas saturator. This is a kind of gas injection amount of water, making water vapour saturated state of the gas, so as to control the burning zone temperature under 1650 ℃, the measures to prevent the NOX formation. (2) take & other; Grading combustion & throughout; The new combustion chamber combustion chamber into low NOx emissions.

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