Classified coke discharge method and equipment for carbon hydrogen powder pyrolysis scorching system using solid heat carrier method

Abstract

A classified coke discharge method and equipment for a carbon hydrogen powder pyrolysis scorching system using solid heat carrier method are disclosed, and are suitable for pulverized coal pyrolysis fluidized bed scorching process, in the carbon hydrogen powder R10FS pyrolysis scorching system UNIT using solid heat carrier R10KS, at least one portion of small particle LS with the particle size less than critical particle size DZ in material EM containing the solid heat carrier is separated at any process position the solid heat carrier R10KS circularly flows to pass through, collected and discharged to reduce the concentration of the small particle LS in the solid heat carrier, the dedusting load of a pyrolysis reaction gas-solid product can be significantly reduced, and the solid contentin pyrolysis tar can be reduced.

Description

technical field [0001] The invention relates to a classified coking method and equipment for a hydrocarbon powder pyrolysis coking system using a solid heat carrier method, which is suitable for the pulverized coal pyrolysis fluidized bed coking process, and is used in the pyrolysis of hydrocarbon powder R10FS using a solid heat carrier R10KS In the coking system UNIT, at any process position where the solid heat carrier R10KS circulates through, at least a part of the small particles LS below the critical particle diameter DZ in the material EM containing the solid heat carrier are separated, collected, discharged and recycled, to Reducing the concentration of small particle LS in the solid heat carrier can significantly reduce the dust removal load of the gas-solid products of the pyrolysis reaction and reduce the solid content in the pyrolysis tar. Background technique [0002] The hydrocarbon powder in the present invention refers to the powder containing carbon and hydr...

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Problems solved by technology

[0009] So far, many industrial countries or large commercial companies have carried out research and development on pulverized coal pyrolysis technology, and have proposed a variety of processes such as the German L-R process, namely the Lurgi-Ruer process, the American Toscoal process, and the American COED process, but there is no large-scale one. Success stories of commercial installations

[0010] From the perspective of engineering technology, the above-mentioned typical pulverized coal pyrolysis technology cannot completely or substantially eliminate the following defects. The root cause is that there is no reasonable integration of technical means to achieve different goals:

[0011] ①The thermodynamic mechanism of the pyrolysis reaction is not clear. The main operating temperature of a single pyrolysis reaction process is located in a narrow temperature range exceeding 500°C. The ability to selectively control the reaction depth of parallel reactions and series reactions in the coal pyrolysis process leads to low tar yield and low hydrogen content;

[0012] ② The heat supply method, fluid mechanics characteristics and equipment structure of the pyrolysis reaction industrial process are unreasonable, resulting in too short operation cycle and poor reliability, and it is difficult to realize large-scale operation, resulting in large investment in unit processing volume;

[0013] ③ The integration of the heat energy recovery system is too low, resulting in low thermal efficiency of the system;

[0014] ④ The integration of pyrolysis steps is too low, there are many operation steps, and the system is complex and reliable

[0077] Method of the present invention, no report

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