Gasification combined facility for carbon fuel including pneumatic conveying dryer

Patent metadata

Field	Value
Publication number	US-9556392-B2
Application number	US-201314654883-A
Country	US
Kind code	B2
Filing date	Dec 24, 2013
Priority date	Dec 26, 2012
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

This invention relates to an integrated gasification apparatus for carbonaceous fuel, wherein high-pressure steam produced during a gasification process of carbonaceous fuel is directly used to dry the carbonaceous fuel, and steam obtained through the drying process is directly used in a water gas shift process.

First claim

What is claimed is:

1. An integrated gasification apparatus for carbonaceous fuel, comprising:
a gasifier to react carbonaceous fuel and a gasification agent to produce a syngas, wherein the gasifier includes a heat exchanger;
a flash dryer to lower a water content of the carbonaceous fuel containing water fed into the flash dryer using high-pressure steam produced in the heat exchanger; and
a water gas shift reactor to produce hydrogen and carbon dioxide from the steam discharged from the flash dryer and the syngas,
wherein the flash dryer comprises a high-pressure feeder for feeding the carbonaceous fuel, a dryer tube for feeding the steam, a cyclone for separating the steam and the carbonaceous fuel, a filter for separating fine particles from the steam separated by the cyclone, and a storage tank for storing the carbonaceous fuel.

2. The integrated gasification apparatus of claim 1 , wherein the carbonaceous fuel is selected from the group consisting of low-grade coal, biomass, and petroleum cokes.

3. The integrated gasification apparatus of claim 1 , wherein the water content of the carbonaceous fuel fed into the flash dryer is 10˜60 wt % based on a total weight of the carbonaceous fuel.

4. The integrated gasification apparatus of claim 1 , wherein the carbonaceous fuel fed into the flash dryer has a particle size of 2 mm or less.

5. The integrated gasification apparatus of claim 1 , wherein the steam fed into the flash dryer has a temperature of 260˜500° C.

6. The integrated gasification apparatus of claim 1 , wherein the steam fed into the flash dryer has a pressure of 12˜44 bar.

7. The integrated gasification apparatus of claim 1 , wherein the water content of the carbonaceous fuel discharged from the flash dryer is 1˜10 wt % based on a total weight of the carbonaceous fuel.

8. The integrated gasification apparatus of claim 1 , wherein the steam discharged from the flash dryer has a temperature of 198˜350° C.

9. The integrated gasification apparatus of claim 1 , wherein the carbonaceous fuel and the steam are fed to a bottom of the flash dryer and then discharged from a top of the flash dryer.

10. The integrated gasification apparatus of claim 1 , wherein the carbonaceous fuel and the steam are fed to a top of the flash dryer and then discharged from a bottom of the flash dryer.

11. The integrated gasification apparatus of claim 1 , further comprising a purifier for separating fine particles from the steam discharged from the flash dryer.

Assignees

• Sk Innovation Co Ltd
• Sk Energy Co Ltd
• Sk Innovation Co Ltd

Inventors

• Yi Min Hoe
• Bae In Kwon
• Kim Gyoo Tae
• Shin Jae Wook

Classifications

• C10J2300/0943

  Coke · CPC title

• C10J2300/1884

  with one stream being synthesis gas · CPC title

• C01B3/12 Primary

  by reaction of water vapour with carbon monoxide · CPC title

• Y02P20/145

  the feedstock being materials of biological origin · CPC title

• F26B23/001

  using waste heat · CPC title