What are the measures to improve the liquefied gas yield using catalytic devices?

1. Increase the temperature of the reactor (using a gas-based approach). 2. Add catalysts that act as additives to increase gas production

Increase reaction depth, gas-rich production scheme

To produce more liquefied gas, keep the key points in mind: whether it can be produced depends on the reaction, and whether it can be recovered depends on stable absorption. This can be achieved through the following method: 1. Using a multi-product liquefied gas scheme, operate under conditions of \"short time, high temperature, high catalyst activity, and high oil-to-catalyst ratio\", that is, a short reaction time, high reaction temperature, high catalyst activity, and a high ratio of oil to catalyst. Also, add some additives. 2. In terms of absorption, improve the absorption efficiency: a. Lower the absorption temperature, as it has a significant impact on the absorption rate. To fully utilize the function of the intercooler, it is necessary to reduce the feed temperature of the absorption tower. 　　b Increase the absorption operation pressure; if possible, raise the pressure compressor to 1.4 MPa. c Raise the desorption temperature to minimize the formation of non-condensable gases. 　　d Increase the absorption dose. e Optimize the middle stage of absorption. f Improve the process flow by using methods such as a dual-tower setup or high-efficiency trays.

Entering the 1990s, driven by environmental regulations, the quality of gasoline evolved toward being lead-free, with high octane ratings, high oxygen content, low vapor pressure, as well as low levels of olefins and aromatics. Ethers (mainly tert-butyl methyl ether) have become key components of gasoline. The process for producing catalytic cracking gasoline ether is designed to meet this trend, and it represents an ideal method for improving the quality of catalytic cracking gasoline as well as final gasoline products. The raw materials for the catalytic cracking gasoline etherification process are catalytic cracking light gasoline and methanol. Under the catalysis of large-pore strongly acidic cation exchange resins, tertiary carbon alkenes in light gasoline react with methanol to form the corresponding tertiary alkyl methyl ethers. After etherification, since some of the olefins are converted into ethers, the octane rating of gasoline can be increased (the research octane number can rise by 1.5 to 3.0 units), the vapor pressure decreases, the amount of olefins decreases, and the oxygen content increases. This is of great significance for the upgrading of gasoline in our country as well as for the export of high-quality lead-free oxygenated gasoline. The etherification process for catalytic cracking gasoline features a simple process flow, few pieces of equipment, mild reaction conditions, stable operation, and strong adaptability to raw materials (light gasoline within different boiling range ranges can be used as raw material depending on the intended use; this process is also applicable to light gasoline produced by ethylene plant cracking), with mature technology. Following pilot tests, pilot plant trials, and assessments of catalyst life, an industrial facility is currently under construction at Plant 1 of Fushun Petrochemical Company. A Chinese patent has been applied for this process technology. The etherification process for catalytic cracking gasoline does not generate any waste materials, and it **reduces the environmental impact of gasoline during storage and transportation** after etherification.

1. Increase the reaction temperature； 2. Improve absorption efficiency. Reduce the absorption temperature and increase the pressure in the absorption tower.