5 results about "Cracking reaction" patented technology

The low carbon olefin and arene producing process includes the following steps: hydroprocessing material oil to obtain hydrogenated tail oil; catalytically cracking and separating catalytically cracked oil and gas to obtain C2=-C3=, C2o-C3o, C4-C5, naphtha, LCO, etc.; returning C4-C5 to catalytical cracking, returning LCO to hydroprocessing, selectively hydrogenating and solvent extracting naphtha to obtain raffinate oil and arene as one target product; steam cracking raffinate oil, hydrogenated C2o-C4o, hydrogenated naphtha and cracked C2o-C3o and separating reacted oil and gas to obtain C2=-C3=, C2o-C3o, C4-C5, naphtha, etc.; returning C2o-C3o to steam cracking, and returning C4-C5 to catalytical cracking. The producing apparatus includes hydroprocessing unit, atalytically cracking unit, steam cracking unit, selectively hydrogenating unit and solvent extracting unit. The present invention produces low carbon olefin with heavy material and has propylene yield over 30 wt% and co-produced toluene, etc.

The invention discloses a hydrocracking method of low-energy-consumption, productive and high-quality jet fuel. The hydrocracking method comprises the steps that after being mixed with hydrogen, raw oil undergoes heat exchange twice, passes through hydrofining and first cracking reaction zones in sequence after passing through a heating furnace and is separated to obtain middle distillate, and the middle distillate enters a second cracking reaction zone to be cracked, wherein the first cracking reaction zone at least comprises two cracking catalysts, namely an upstream filling catalyst I and a downstream filling catalyst II; the catalyst I contains 15-50wt% of modified Y molecular sieve; the catalyst II contains 3-30wt% of modified Y molecular sieve; the content of the modified Y molecular sieve in the catalyst I is higher than the content of the modified Y molecular sieve in the catalyst II by 10-25%. The hydrocracking method has the advantages that the high temperature and high pressure countercurrent heat transfer technology and the hydrocracking catalyst grading technology are organically combined and the hydrocracking reaction heat is comprehensively utilized, thus improving the quality of the target product and reducing the project investment and the operation energy consumption while maintaining the selectivity of the catalysts.

The invention discloses a kitchen range of biological oil, which comprises an integrated steel bottle, a switch and a cooking stove. Wherein, the cooking stove contains a high-temperature non-oxygen crack reaction room and a normal burning room; the biological oil and water via tubes, steel bottle and switch are fed to the crack reaction room to be mixed cracked; the product is ejected to the burning room to be burnt. The invention uses water as combustion agent and uses the biological oil with high viscosity and complex components as fuel, to solve the problem when burning biological oil with black smoke and jam.

The invention relates to a catalytic cracking method. The method comprises the following steps: (1) feeding catalytic cracking raw material oil into the first reaction zone of a catalytic cracking reactor, contacting a catalytic cracking catalyst, and carrying out a first catalytic cracking reaction; (2) continuously carrying out a second catalytic cracking reaction on the obtained first reactionproduct and a semi-spent catalyst in the second reaction zone of the catalytic cracking reactor to obtain a second reaction product and a spent catalyst, sending an oxygen-containing compound into thesecond reaction zone of the catalytic cracking reactor, contacting the first reaction product and the semi-spent catalyst, and carrying out a second catalytic cracking reaction. The method provided by the invention can improve the heat distribution of the catalytic cracking reactor and improve the distribution of reaction products.

The invention belongs to the technical field of organic synthesis, and particularly relates to a method for producing isopropanolamine and 1, 2-propane diamine by cracking 2, 6-dimethyl piperazine. The method comprises the following steps: carrying out a contact cracking reaction on 1, 2, 6-dimethyl piperazine under the action of a Co-Mo-Pd/Al2O3 catalyst to prepare a mixture of isopropanolamine and 1, 2-propane diamine, and carrying out distillation separation to obtain pure isopropanolamine and 1, 2-propane diamine. According to the method for producing isopropanolamine and 1, 2-propane diamine by cracking 2, 6-dimethyl piperazine, the Co-Mo-Pd/Al2O3 catalyst is adopted for cracking reaction, the catalyst has the advantages of high specific surface area, high mechanical strength and good stability, the preparation process is simple, and the catalyst has very high catalytic activity on cracking of 2, 6-dimethyl piperazine.