The invention relates to a method for describing how to produce at least one C4 compound from Bhutan. One step hydrogenation of tetrahydrofuran and tetrahydrofuran in non hydride gas phaseIn the presence of maleic anhydride, the catalyst for maleic acid hydrogenation has the property of heterogeneous hydrogenation. This includes the following aspects: contact with maleic anhydride, water vapor and carbon oxide in the absorption zone of high boiling organic solventMaleic anhydride with a boiling point of at least three degrees at air pressure results in the formation of a maleic anhydride solution in an organic solvent with a high boiling point. Loss from absorption zoneIn a high-boiling solvent with a gaseous stream containing hydrogen. Together, it leads to the separation (removal) of maleic anhydride from it and the formation of a vapor duct, including hydrogen and maleic hydride. (D) Touching a substance from the vapor stream from step (e) in the hydrogenation regionUnder hydrogenation conditions with an isotropic hydrogenation catalyst leading to the conversion of the maleic anhydride to at least one C4 compound selected from Bhutan - 1, 4 diol, γ - butyrolactone and tetrahydrofuran, (e) recovery of a duct product from the hydrogenation region containing the said C4 compound .
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