Treatment of crude synthesis gas

1. A process for processing of crude synthesis gas from a gasification facility that subjects fuels to partial oxidation, for a crude gas converting operation, the process comprising:

in a plurality of scrubbing stages, crude synthesis gas generated in a reactor of the gasification facility is, by injection of water into the gas, the gas is largely cleaned of entrained particles, cooled, and steam-saturated;

converting the steam-saturated crude synthesis gas into a superheated state thereof; and

heating the superheated crude synthesis gas in a heat exchange to an entry temperature of the crude gas converting process.

2. The process as claimed in claim 1 , further comprising steam saturating the crude synthesis gas at a first temperature and superheating the crude synthesis gas at a second temperature, and a temperature difference between the first steam-saturated state at a lower temperature and the superheated state at a higher temperature is at least 5° C.

3. The process as claimed in claim 1 , further comprising converting the steam-saturated crude synthesis gas into the superheated state by directly supplying hot gas to the crude synthesis gas.

4. The process as claimed in claim 3 , wherein the hot gas comprises high pressure steam.

5. The process as claimed in claim 1 , further comprising converting the steam-saturated crude synthesis gas into the superheated state by directly supplying a fraction of the crude synthesis gas obtained in the crude gas converting operation which is exothermic.

6. The process as claimed in claim 5 , further comprising supplying the fraction of the crude synthesis gas obtained in the exothermic crude gas converting operation to the steam-saturated crude synthesis gas via a hot gas blower.

7. The process as claimed in claim 1 , further comprising heating the superheated crude synthesis gas to an entry temperature of the crude gas converting process in a heat exchanger, wherein the heat exchanger is embodied as a countercurrent heat exchanger.

8. The process as claimed in claim 7 , further comprising heating the superheated crude synthesis gas to the entry temperature of the crude gas converting process in a heat exchanger against the hotter crude gas departing the crude gas converting operation.

9. The process as claimed in claim 1 , further comprising heating the superheated crude synthesis gas to the entry temperature of the crude gas converting process in a heat exchanger against the converted crude synthesis gas.

10. The process as claimed in claim 1 , further comprising generating the crude synthesis gas in a reactor and causing the generated gas to traverse a quenching chamber of the gasification facility, defining a separate scrubbing stage.

11. The process as claimed in claim 1 , further comprising generating the crude synthesis gas in a reactor and causing the generated gas to traverse a preliminary scrub for removing coarse dust , defining a separate scrubbing stage.

12. The process as claimed in claim 1 , further comprising generating the crude synthesis gas in a reactor and causing the generated gas to traverse at least one venturi scrubber, defining a separate scrubbing stage.

13. The process as claimed in claim 1 , further comprising generating the crude synthesis gas in a reactor and causing the generated gas to traverse a scrubber for removing fine and ultrafine dust, defining a separate scrubbing stage.

14. A process for treating steam-saturated crude gases from entrained flow gasification of fuels before entry of the fuels into heat exchangers sited upstream of a crude gas converting operation, the process comprising:

in order to avoid solid deposits in an entrance region of the heat exchangers, converting the crude gas from a saturated state into a superheated state by supplying hot gas to the fuels.

15. The process of claim 14 , wherein the hot gas contemplated is superheated high pressure steam or recycled superheated converted crude gas.