Method related to heat transfer for exothermic reactions

A method of producing a product comprising C2-C5 hydrocarbons and C6-C18 hydrocarbons, the method consisting of the steps of:

• a) converting synthesis gas to the product comprising C2-C5 hydrocarbons and C6-C18 hydrocarbons in a first reactor;
• b) removing the product comprising C2-C5 hydrocarbons and C6-C18 hydrocarbons from the first reactor;
• c) reintroducing the C6-C18 hydrocarbons into the first reactor and/or introducing the C6-C18 hydrocarbons into a cooling jacket of the first reactor;
• and
• d) performing an exothermic reaction in the first reactor, thereby transferring heat from the exothermic reaction to the C6-C18 hydrocarbons, thereby storing heat in the C6-C18 hydrocarbons, wherein step a) comprises contacting synthesis gas with a catalyst comprising Mn;
• wherein the transferring of heat from the exothermic reaction to the C6-C18 hydrocarbons causes a phase change of the C6-C18 hydrocarbons;
• wherein the C6-C18 hydrocarbons are reintroduced into the first reactor;
• wherein the C6-C18 hydrocarbons are introduced into the cooling jacket of the first reactor;
• wherein the C6-C18 hydrocarbons are reintroduced into the first reactor with the reactants of the exothermic reaction.
• wherein the C6-C18 hydrocarbons are mixed with the reactants of the exothermic reaction;
• wherein the method further comprises after step d) performing an endothermic reaction in the first reactor, thereby transferring heat from the C6-C18 hydrocarbons with the stored heat to the endothermic reaction;
• wherein the transferring of heat from the C6-C18 hydrocarbons with the stored heat to the endothermic reaction causes a phase change of the C6-C18 hydrocarbons;
• wherein the method further comprises after step d) transferring the C6-C18 hydrocarbons with the stored heat from the first reactor to a second reactor and performing an endothermic reaction in the second reactor, thereby transferring heat from the C6-C18 hydrocarbons with the stored heat to the endothermic reaction;
• wherein the method further comprises after the endothermic reaction, transferring the C6-C18 hydrocarbons from the second reactor back to the first reactor and performing an exothermic reaction in the first reactor, thereby transferring heat from the exothermic reaction to the C6-C18 hydrocarbons, thereby storing heat in the C6-C18 hydrocarbons;
• wherein the C2-C5 hydrocarbons comprises C2-C5 olefins;
• wherein the method further comprises separating the C2-C5 olefins from the C6-C18 hydrocarbons prior to step c);
• wherein the exothermic reaction in step d) converts synthesis gas to C2-C5 hydrocarbons;
• wherein step a) converts synthesis gas to C6-C18 hydrocarbons as by-products;
• wherein the exothermic reaction in step d) selectively converts synthesis gas to C2-C5 olefins;
• wherein step a) selectively converts synthesis gas to C2-C5 olefins;
• wherein the method does not include the use of a salt-based product or a molten metal produce as a phase change material;
• wherein the method is performed on an industrial and pilot scale;
• wherein the syngas is contacted with a catalyst at a temperature of 180° C. and a pressure of syngas is contacted with a catalyst at a pressure of 100 bar to less than 200 bar;
• wherein the catalyst comprises Co and Mn, and each of promoter elements La, P, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Ti and Zr;
• and
• wherein the C6-C18 hydrocarbons comprise C6-C12 hydrocarbons.