A method for producing synthetic gas by co-gasification of coal and heavy oil
A synthesis gas and co-gasification technology, applied in chemical instruments and methods, gasification process, granular/powdered fuel gasification, etc., can solve the problems of energy consumption and production cost reduction, synthesis gas output and energy efficiency utilization rate increase, Problems such as large consumption of raw materials
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Embodiment 1
[0082] Step 1. Storage and transportation of heavy oil and preparation and transportation of coal slurry
[0083] The heavy oil from the Weiqiang coal and residual oil cracking olefins plant is sent to the heavy oil storage tank 1 for storage, and the heavy oil in the heavy oil storage tank is then pressurized to 1.5MPa by the high-pressure heavy oil pump 2, and sent to the gasifier through the heavy oil pipeline 4 The outer material channel 37 in the four-channel nozzle 13 at the top;
[0084] In this embodiment, the high-pressure heavy oil pump 2 is a piston-type diaphragm pump, such as a product sold by Shanghai Huishang Engineering Equipment Co., Ltd. under the trade name of Feluwa pumpen.
[0085] Weiqiang bituminous coal is crushed to obtain coal particles with a particle size of ≤20mm, and the coal particles, water, sodium hydroxide, and sodium lignosulfonate are respectively sent to the mill 5 for mixing and grinding to obtain coal slurry, and The coal slurry is sent ...
Embodiment 2
[0149] In this embodiment, the difference from Example 1 is that the mass percentages of coal particles, water, dispersant and pH regulator in the coal slurry are respectively: 59% of coal particles, 40.66% of water, 0.3% of dispersant, and PH Regulator 0.04%, the dispersant is calcium lignosulfonate, and the raw coal is gas coal.
[0150] In step 1, the heavy oil is pressurized to 7.0 MPa by the high-pressure heavy oil pump 2, and is sent to the central material channel 35 in the four-channel nozzle 13 on the top of the gasifier through the heavy oil pipeline 4; the coal slurry is pressurized by the high-pressure coal slurry pump 7 to 7.0 MPa is sent into the outer material channel 37 in the four-channel nozzle 13 .
[0151] In step 2, coal slurry, heavy oil and oxygen are subjected to partial oxidation reaction at a temperature of 1320° C. and a pressure of 4.0 MPa; the temperature of the heavy oil is maintained at 70° C.
[0152] In the present embodiment, further, the den...
Embodiment 3
[0157] In this embodiment, the difference from Example 1 is that the mass percentages of coal particles, water, dispersant and pH regulator in the coal slurry are respectively: 64% of coal particles, 35.5% of water, 0.45% of dispersant, and PH Regulator 0.05%, the dispersant is naphthalenesulfonic acid sodium salt formaldehyde condensate, and the raw coal is long-flame coal.
[0158] In step 1, the heavy oil is pressurized to 9.5MPa by the high-pressure heavy oil pump 2, and is sent to the central material channel 35 in the four-channel nozzle 13 on the top of the gasifier through the heavy oil pipeline 4; the coal slurry is pressurized by the high-pressure coal slurry pump 7 to 9.5 MPa is sent into the outer material channel 37 in the four-channel nozzle 13 .
[0159] In step 2, coal slurry, heavy oil and oxygen are subjected to partial oxidation reaction at a temperature of 1350° C. and a pressure of 6.5 MPa; the temperature of the heavy oil is maintained at 80° C.
[0160]...
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