Method for oil gasification

• US 6,610,112 B1
• Filed: 12/07/1999
• Issued: 08/26/2003
• Est. Priority Date: 12/07/1999
• Status: Expired due to Term

• Current Assignee: Air Products and Chemicals Incorporated (Linde Plc)
• Original Assignee: Texaco Incorporated (Chevron Corp.)
• Inventors: Klock, Byron Von, Chan, Henry C.
• Primary Examiner(s): Johnson, Jerry D.
• Assistant Examiner(s): RIDLEY, BASIA ANNA
• Application Number:
  US09/455,769
• Time in Patent Office: 1,358 Days
• Field of Search: 48/62.R, 481/02.R, 48/94, 481/28, 481/97.R, 481/985, 482/11, 482/12, 482/15, 482/14.R, 422/169, 422/170, 422/187, 422/188, 422/189, 422/234, 422/235, 473/418.2, 473/648.1, 473/650, 951/63, 951/74, 952/47, 952/66, 962/19, 210/180, 210/188, 210/195.1, 210/196, 210/335
• US Class Current: 48/214.00R
• CPC Class Codes: C01B 2203/0415 Purification by absorption in liquids
• CPC Class Codes: C01B 2203/0485 the impurity being a sulfur compound
• CPC Class Codes: C01B 2203/049 the impurity being carbon
• CPC Class Codes: C01B 3/36 using oxygen or mixtures containing oxygen as gasifying agents
• CPC Class Codes: C01B 3/52 by contacting with liquids; Regeneration of used liquids C01B3/508 takes precedence
• CPC Class Codes: C10K 1/06 combined with spraying with water C10K1/001 takes precedence
• CPC Class Codes: C10K 1/10 with aqueous liquids alkaline reacting aqueous liquids C10K1/12

Abstract

The present invention relates to a method for oil gasification. In particular, the present invention relates to a method for oil gasification while reducing wastewater and costly purification systems. The method comprises providing feedstock and water to an oil gasification system; receiving flash gas from the oil gasification system at a flash gas condensing section; extracting vapor generated by the flash gas condensing section; returning water produced by the extracting step to the flash gas condensing section; outputting dry flash gas produced by the extracting step; receiving spent wash water at a syngas cooling section from a syngas washing section; and outputting washed syngas from the syngas washing section.

Claims

1. A method for providing seal and flush water to an oil gasification system, comprising:

receiving hot soot water from a syngas quencher and soot scrubber at a soot water vacuum flasher,

receiving cool soot water from the soot water vacuum flasher at a soot filter,

receiving filtrate water from the soot filter at a cartridge filter,

providing seal and flush water to the soot water vacuum flasher and the syngas quencher and soot scrubber from the cartridge filter,

providing filtrate water to a water storage tank and the syngas quencher and soot scrubber from the soot filter,

receiving flash gas from the soot water vacuum flasher at a flash gas condenser,

providing flash condensate water from the flash gas condenser to a vacuum pump as seal water, to a syngas cooler as seal and flush water, and to a syngas washer as syngas wash water.

2. The method of claim 1, wherein the vacuum pump is coupled to the flash gas condenser.

3. The method of claim 2, wherein the vacuum pump extracts vapors from the flash gas condenser and emits water to a flash gas condenser knockout drum and emits dry flash gas.

4. The method of claim 2, wherein the vacuum pump is a liquid ring pump.

5. The method of claim 1, wherein the cartridge filter is a fine mesh filter.

6. The method of claim 1, wherein the oil gasification system is a substantially closed-loop system.