# US 8,783,036 B2 · System for cooling syngas

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- Number: US 8,783,036 B2
- Document ID: US8783036B2
- Status: Granted
- Kind: B2
- Application number: 12/939,937
- Filed: 2010-11-04
- Published: 2012-05-10
- Granted: 2014-07-22
- Earliest claimed: 2010-11-04
- Assignees: General Electric Company
- Applicants: Judeth Brannon Corry; Leroy Omar Tomlinson; James Michael Storey; Paul Stephen Dimascio; Mark Joseph Steffen; Wei Chen; Benjamin Campbell Steinhaus; Richard Anthony De Puy
- Inventors: Judeth Brannon Corry; Leroy Omar Tomlinson; James Michael Storey; Paul Stephen Dimascio; Mark Joseph Steffen; Wei Chen; Benjamin Campbell Steinhaus; Richard Anthony De Puy
- Web page: https://patentgrep.com/patent/US8783036B2

## CPC

- C10J 3/86: combined with waste-heat boilers
- C10J 3/845: {Quench rings}
- F01K 23/067: {the combustion heat coming from a gasification or pyrolysis process, e.g. coal gasification (gas turbines with fuel gasifiers F02C3/28)}
- F22B 1/1846: {the hot gas being loaded with particles, e.g. waste heat boilers after a coal gasification plant}
- F28D 7/0075: {with particular circuits for the same heat exchange medium, e.g. with the same heat exchange medium flowing through sections having different heat exchange capacities or for heating or cooling the same heat exchange medium at different temperatures}
- F28D 7/04: the conduits being spirally coiled (F28D7/10 takes precedence){(F28D7/0016 and F28D7/0033 take precedence)}
- C10J 2300/1884: with one stream being synthesis gas
- C10J 2300/1892: with one stream being water/steam
- F28D 2021/0022: {for chemical reactors}
- F28D 2021/0059: {for petrochemical plants}
- F28D 2021/0075: {for syngas or cracked gas cooling systems}
- Y02E 20/16: Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E 20/18: Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
- Y02P 20/129: Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
- C10J: PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES (synthesis gas from liquid or gaseous hydrocarbons C01B; underground gasification of minerals E21B43/295); CARBURETTING AIR OR OTHER GASES
- F01K: STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; nuclear power plants, engine arrangements therein G21D)
- F22B: METHODS OF STEAM GENERATION; STEAM BOILERS
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A system includes a syngas cooler configured to cool a syngas. The syngas cooler includes a first syngas cooler section configured to cool the syngas and a second syngas cooler section configured to cool the syngas and generate a first superheated steam with an enthalpy of less than approximately 3800 kJ/kg.

## Claims

### Claim 1

A system, comprising:
a syngas generator configured to generate a syngas;
a syngas cooler configured to cool the syngas, wherein the syngas cooler comprises:
a first syngas cooler section including a first input and a first output, and configured to cool the syngas along a syngas path in a first shell of the first syngas cooler section and generate a saturated steam, wherein the first output outputs the saturated steam; and
a second syngas cooler section including a second input and a second output, and configured to cool the syngas along the syngas path in a second shell of the second syngas cooler section and superheat the saturated steam to generate a first superheated steam with an enthalpy of less than approximately 3800 kJ/kg, wherein the second syngas cooler section is disposed along the syngas path downstream of the first syngas cooler section, and the first output is coupled to the second input; and
a steam user connected to the second output.

### Claim 2 (depends on 1)

The system of claim 1, wherein a degree of superheat of the first superheated steam is between approximately 5 degrees Celsius and 360 degrees Celsius.

### Claim 3 (depends on 1)

The system of claim 1, wherein the second syngas cooler section is configured to output the first superheated steam to an input of a component of a power generation system, and the component excludes a steam turbine.

### Claim 4 (depends on 1)

The system of claim 1, wherein a capacity of the second syngas cooler section is configured to superheat a steam generated in the first syngas cooler section such that a pressure of a first portion of the first superheated steam is reduced to supply a heat exchanger, reactor, attemperator or a combination thereof at saturated conditions or with superheat, and a second portion of the first superheated steam is supplied to a heat recovery steam generation (HRSG) system without pressure reduction.

### Claim 5 (depends on 1)

The system of claim 1, comprising an integrated pressure controller coupled to the second syngas cooler section, wherein the pressure controller is configured to control a steam drum pressure and to depressurize the first superheated steam.

### Claim 6 (depends on 1)

The system of claim 1, wherein the second syngas cooler section comprises a plurality of independent outputs configured to output a plurality of superheated steam flows.

### Claim 7 (depends on 1)

The system of claim 1, comprising a third syngas cooler section configured to cool the syngas along the syngas path and generate a second superheated steam, wherein the third syngas cooler section comprises a third output, the second and third outputs are independent from one another, and the third syngas cooler section is disposed along the syngas path downstream of the second syngas cooler section.

### Claim 8 (depends on 7)

The system of claim 7, wherein the first superheated steam and the second superheated steam have different temperatures or pressures.

### Claim 9 (depends on 1)

The system of claim 1, wherein the syngas cooler comprises an elongated enclosure having a longitudinal axis, and the first and second syngas cooler sections are disposed along the syngas path in series one after another along the longitudinal axis.

### Claim 10 (depends on 9)

The system of claim 9, wherein the syngas cooler comprises an after cooler section, the second syngas cooler section is disposed along the syngas path axially between the first syngas cooler section and the after cooler section, and the after cooler section is configured to cool the syngas along the syngas path.

### Claim 11

A system, comprising:
a gas fuel generator configured to generate a gas fuel;
a steam generator configured to generate a steam;
a gas fuel cooler configured to cool a gas fuel for power generation, wherein the gas fuel cooler comprises:
a first gas fuel cooler section including a first shell and a first tube, and configured to cool the gas fuel along a gas path in a first shell of the first gas fuel cooler section and generate a first superheated steam in the first tube of the first gas fuel cooler section, and the steam generator is coupled to the first tube;
a second gas fuel cooler section including a second shell and a second tube, and configured to cool the gas fuel along the gas path in the second shell of the second gas fuel cooler section and generate a second superheated steam in the second tube of the second gas fuel cooler section, wherein the second gas fuel cooler section is disposed along the gas path downstream of the first gas fuel cooler section, and the first tube is coupled to the second tube
a first steam connector configured to output the first superheated steam through the first tube; and
a second steam connector configured to output the second superheated steam through the second tube.

### Claim 12 (depends on 11)

The system of claim 11, wherein the first superheated steam and the second superheated steam have different temperatures, pressures, or enthalpies.

### Claim 13 (depends on 11)

The system of claim 11, wherein the first steam connector is configured to output the first superheated steam to a first component of a power generation system, the second steam connector is configured to output the second superheated steam to a second component of the power generation system, and at least one of the first or second component excludes a steam turbine.

### Claim 14 (depends on 11)

The system of claim 11, wherein the first steam connector is configured to output the first superheated steam to a first component, the second steam connector is configured to output the second superheated steam to a second component, and at least one of the first or second component comprises a heat recovery steam generation (HRSG) system, a gas treatment system, a process heat exchanger, a reactor, an attemperator, or a combination thereof.

### Claim 15

A system, comprising:
a gas cooler configured to cool a gas, wherein the gas cooler comprises:
an elongated enclosure having a longitudinal gas flow path;
a first gas cooler section disposed in the elongated enclosure, wherein the first gas cooler section is configured to cool the gas along the longitudinal gas flow path;
a second gas cooler section disposed in the elongated enclosure, wherein the second gas cooler section is configured to cool the gas along the longitudinal gas flow path and generate a first superheated steam;
a steam drum configured to provide a saturated steam from the first gas cooler section to the second gas cooler section;
a third gas cooler section disposed in the elongated enclosure along the longitudinal gas flow path, wherein the third gas cooler section is configured to cool the gas along the longitudinal gas flow path and generate a second superheated steam; and
an after cooler section disposed in the elongated enclosure, wherein the first gas cooler section, the second gas cooler section, and the after cooler section are disposed in series one after another along the longitudinal gas flow path, wherein the second gas cooler section is disposed axially between the first gas cooler section and the after cooler section along the longitudinal gas flow path.

### Claim 16 (depends on 15)

The system of claim 15, wherein the first gas cooler section, the second gas cooler section, the third gas cooler section, and the after cooler section are disposed in the series one after another along the longitudinal gas flow path, wherein the second and third gas cooler sections are disposed axially between the first gas cooler section and the after cooler section along the longitudinal gas flow path.

### Claim 17 (depends on 15)

The system of claim 15, wherein the second gas cooler section is configured to output the first superheated steam to an input of a heat recovery steam generation (HRSG) system, a gas treatment system, a process heat exchanger, a reactor, an attemperator, or a combination thereof, excluding a steam turbine.