Thermal coupling of cement production with gasification

A cement plant comprising

• (i) at least one cement kiln which is heated by combustion of at least one fuel and in which hot clinker is formed from a pre-heated raw clinker,
• (ii) at least one clinker cooler in which said hot clinker transfers heat to an air stream to form a hot air stream,
• wherein said clinker cooler is downstream of and fluidically connected to said at least one cement kiln,
• (iii) and at least one gasifier for producing raw syngas from a first feedstock by gasification, said raw syngas optionally comprising halogens,
• wherein at least a portion of the hot air stream formed in step (ii) and said at least one gasifier are directly or indirectly thermally coupled.

A method for gasification of a first feedstock in at least one gasifier, comprising the steps

• (i) providing a cement plant comprising at least one cement kiln, at least one clinker cooler and at least one gasifier,
• (ii) forming hot clinker in the at least one cement kiln,
• (iii) cooling the hot clinker in at least one clinker cooler with an air stream and thereby forming a hot air stream,
• (iv) transferring heat from at least a portion of the hot air stream to the at least one gasifier, and
• (v) forming raw syngas in the at least one gasifier, said raw syngas optionally comprising halogens.