Hot-feeding coal water slurry coal gasification system
A coal-water slurry and coal gasification technology, applied in the field of coal chemical industry, can solve the problems of shell-side fluid short circuit, unsuitability for coal-water slurry, unfavorable heat transfer, etc., and achieve reduced oxygen consumption, low transformation cost and difficulty, and high gasification efficiency high effect
Pending Publication Date: 2019-07-16
XI AN JIAOTONG UNIV
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Problems solved by technology
However, in the traditional spiral baffle heat exchanger, there is a gap at the overlap of two adjacent baffles on the shell side. This gap will form a fast passage for the fluid and cause a local short circuit of the fluid on the shell side, especially for water coal with high viscosity. Slurry is more likely to leak from the gap, which is not conducive to heat transfer, so it is not suitable as a coal-water slurry preheating device
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[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] refer to figure 1 , a hot feed coal water slurry coal gasification system, comprising a coal water slurry storage tank 1, the outlet of the coal water slurry storage tank 1 is connected with the inlet of the coal water slurry main pipe 7 and the coal water slurry pump 2, and the coal water slurry pump 2 The outlet of the coal water slurry is connected with the coal water slurry inlet of the coal water slurry preheating device 3 through the coal water slurry main pipe 7, and the coal water slurry outlet of the coal water slurry preheating device 3 passes through the coal water slurry main pipe 7 and the coal water slurry inlet of the gasifier 4 Connected, the oxygen inlet of the gasifier 4 is connected to the oxygen pipeline 11, and the synthesis gas outlet of the gasifier 4 leads to the synthesis gas treatment section;
[0029] The heat source inlet of the de...
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The invention relates to a hot-feeding coal water slurry gasification system, which comprises a coal water slurry storage tank, wherein an outlet of the coal water slurry storage tank is connected with an inlet of a coal water slurry pump through a coal water slurry main pipe, an outlet of the coal water slurry pump is connected with a coal water slurry inlet of a coal water slurry preheating device through the coal water slurry main pipe, a coal water slurry outlet of the coal water slurry preheating device is connected with a coal water slurry inlet of a gasification furnace through the coalwater slurry main pipe, an oxygen inlet of the gasification furnace is connected with an oxygen pipeline, and a synthesis gas outlet of the gasification furnace communicates with a synthesis gas treatment working section; and a heat source inlet of the coal water slurry preheating device is connected with an outlet of a heat source fluid inlet pipeline, a second valve is arranged on the heat source fluid inlet pipeline, and a heat source outlet of the coal water slurry preheating device is connected with an inlet of the heat source fluid outlet pipeline. The technical scheme of the inventioncan be easily used for upgrading and reconstructing a traditional coal water slurry coal gasification system, and the reconstruction cost and the difficulty are lower; and meanwhile, the coal water slurry preheating device is more suitable for preheating coal water slurry, which is a shear thinning non-Newtonian fluid with higher viscosity.
Description
technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a coal gasification system of hot feed coal water slurry. Background technique [0002] Coal gasification technology is the leading technology of coal chemical industry. The entrained entrained gasification technology of coal water slurry in coal gasification technology is relatively mature and reliable. Seeking and adopting a more reasonable and efficient way of utilizing coal water slurry will definitely greatly improve the efficiency of coal gasification. economic benefits. The usual coal water slurry gasification system adopts the normal temperature feeding method of coal water slurry. After entering the gasifier, the coal water slurry needs to absorb a lot of heat to vaporize the contained water and reach the gasification temperature at the same time; such a feeding method It has adverse effects on the gasification efficiency of coal-water slurry,...
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Login to View More IPC IPC(8): C10J3/48C10J3/50C10J3/72
CPCC10J3/48C10J3/50C10J3/72C10J2200/15C10J2300/093C10J2300/0959
Inventor 王斯民叶树沛肖娟文键宋晨孙利娟
Owner XI AN JIAOTONG UNIV