TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: The pressure of the second stage is not more than 1 MPa. The temperature of the first stage is less than 300 degrees C, and the second stage is more than 300 degrees C. The process further comprises the step of carrying out a regeneration of catalyst of the second stage. The apparatus includes at least two reaction vessels in series, including a first reaction vessel including the carbon oxides conversion catalyst, and a second reaction vessel downstream of the first including the hydrogenation catalyst. Preferred Components: The carbon oxide conversion catalyst comprises a copper oxide, a methanol synthesis catalyst, dimethyl ether (DME) synthesis catalyst, a zeolite and/or a silico alumino phosphate (SAPO). The catalyst comprises one or more of copper (Cu)-zinc oxide (ZnO)-aluminum oxide (Al2O3), Cu-ZnO-Al2O3/H-zeolite socony mobil-5 (HZSM-5), and Cu-ZnO-Al2O3/ SAPO-11. The carbon oxide conversion catalyst includes: an acidic zeolite comprising mordenite, Y-zeolite and zeolite socony mobil-5 (ZSM-5); a SAPO comprising SAPO-11 and SAPO-34; and one or more of ZSM-5 and SAPO-11. The hydrogenation catalyst includes a source of palladium (pd). The carbon oxide conversion catalyst is active to produce methanol and/or DME in the first stage. The second stage includes a zeolite, and a SAPO. The dehydration/hydrogenation catalyst includes the catalyst for conversion of methanol and/or DME to (C3+) hydrocarbons comprising a Pd-modified zeolite. The regeneration of the catalyst includes heating the catalyst to a temperature of at least 500 degrees C. The molar fraction of methane in the total saturated hydrocarbons produced is less than 10%. The pressure is controlled using a valve configuration. The carbon oxide conversion catalyst is active to produce methanol and/or DME in the first stage, and comprises a methanol synthesis catalyst and/or DME synthesis catalyst. The proportion of iso-butane is more than 60 wt.% of the 4C saturated hydrocarbons in the product. EXAMPLE - No suitable example given.