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Device and method for preparing sulfur by coal gasification in conjunction with calcium sulfate calcination and carbon thermal reduction

A technology of coal gasification and calcium sulfate, applied in the direction of sulfur preparation/purification, which can solve the problems of low utilization rate of raw materials, energy consumption needs to be improved, etc.

Active Publication Date: 2020-07-07
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the contriver finds: the raw material utilization rate of this method is low, energy consumption needs to be improved

Method used

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  • Device and method for preparing sulfur by coal gasification in conjunction with calcium sulfate calcination and carbon thermal reduction

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Effect test

Embodiment 1

[0068] A device for preparing sulfur by coal gasification combined with calcium sulfate calcination and carbon thermal reduction, including: U-shaped furnace 4, high temperature separator I (5), calcium sulfate storage bin 1, carbon material storage bin I (3), carbon thermal reduction Tower 9, high-temperature separator II (10), reheater 11, dedusting device 12, sulfur recovery device 13, sulfur storage tank 14; the U-shaped furnace 4 is divided into a calcination section on the left and a coal gasification section on the right. The calcination section on the left side is connected to the calcium sulfate storage bin 1 and the carbon material storage bin I (3), and the upper outlet of the coal gasification section on the right side of the U-shaped furnace 4 is connected to the inlet of the high-temperature separator I (5). The bottom material outlet of the separator I (5) is connected to the coal gasification section on the right side of the U-shaped furnace 4 and the calcium ox...

Embodiment 2

[0073] A device for preparing sulfur by coal gasification combined with calcium sulfate calcination and carbon thermal reduction, including: U-shaped furnace 4, high temperature separator I (5), calcium sulfate storage bin 1, carbon material storage bin I (3), carbon thermal reduction Tower 9, high-temperature separator II (10), reheater 11, dedusting device 12, sulfur recovery device 13, sulfur storage tank 14; the U-shaped furnace 4 is divided into a calcination section on the left and a coal gasification section on the right. The calcination section on the left side is connected to the calcium sulfate storage bin 1 and the carbon material storage bin I (3), and the upper outlet of the coal gasification section on the right side of the U-shaped furnace 4 is connected to the inlet of the high-temperature separator I (5). The bottom material outlet of the separator I (5) is connected to the coal gasification section on the right side of the U-shaped furnace 4 and the calcium ox...

Embodiment 3

[0077] A device for preparing sulfur by coal gasification combined with calcium sulfate calcination and carbon thermal reduction, including: U-shaped furnace 4, high temperature separator I (5), calcium sulfate storage bin 1, carbon material storage bin I (3), carbon thermal reduction Tower 9, high-temperature separator II (10), reheater 11, dedusting device 12, sulfur recovery device 13, sulfur storage tank 14; the U-shaped furnace 4 is divided into a calcination section on the left and a coal gasification section on the right. The calcination section on the left side is connected to the calcium sulfate storage bin 1 and the carbon material storage bin I (3), and the upper outlet of the coal gasification section on the right side of the U-shaped furnace 4 is connected to the inlet of the high-temperature separator I (5). The bottom material outlet of the separator I (5) is connected to the coal gasification section on the right side of the U-shaped furnace 4 and the calcium ox...

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Abstract

The invention relates to a process and method for preparing sulfur by coal gasification in conjunction with calcium sulfate calcination and charcoal thermal reduction. For the reaction of calcium sulfate with carbon materials and sulfur at high temperature to produce high concentration of SO 2 Flue gas and metal calcium oxide, using U-shaped coal gasification calciner, charcoal thermal reduction tower, sulfur recovery device and various heat exchangers, etc., through precise control of various reaction conditions, sulfur is prepared from solid waste calcium sulfate that is difficult to handle, and at the same time Calcium oxide is a by-product, which can replace limestone as a desulfurization and denitrification agent.

Description

technical field [0001] The invention belongs to the field of resource utilization of solid waste, in particular to a process and method for preparing sulfur by coal gasification in conjunction with calcium sulfate calcination and charcoal thermal reduction. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the rapid development of my country's high-concentration phosphate fertilizer and phosphoric acid industry, the output of by-product phosphogypsum has increased sharply. The main component of phosphogypsum is CaSO 4 2H 2 O, also contains a small amount of other metal ion sulfate. At present, the annual discharge of phosphogypsum in my country is nearly 100 million ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/02
Inventor 马春元夏霄张立强崔琳赵希强李军冯太
Owner SHANDONG UNIV
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