Patent technology of Beijing Huaze Chemical Engineering Co., Ltd.

Performance description of serial number equipment name Compared with F 1 float valve tray, the separation efficiency of 1 differential float valve tray is improved 10%-20%, the processing capacity is improved by 30-50%, and the operation flexibility is greatly improved. Suitable for large liquid volume, normal pressure or high pressure operation. Compared with F 1 float valve tray, the separation efficiency of 2-plate screen tray is increased by 10%, and the treatment capacity is increased by 30-40%, which is suitable for high gas velocity operation. 3 Compared with rectangular saddle ring packing of the same specification, the multi-saddle ring packing improves the separation efficiency by 30%, the production capacity by 5- 10% and the raw material consumption by 40-50%. Streamlined feed gas distributor is suitable for gas feeding of large packed tower. Compared with the conventional gas distributor, the unevenness is reduced to 1/3, and the entrainment rate is reduced to 1/6. High-performance liquid distributor has the advantages of uniform liquid distribution, high operation flexibility, anti-clogging, convenient installation and liquid level adjustment. The valve foot of the quick-loading floating valve tray is provided with elastic barbs, which is quick and convenient to install and not easy to fall off. 7 Sepak high-efficiency structured packing series is higher than ordinary structured packing by 10- 15%, and its production capacity is higher by 10%. 8 Tray with Bubbling Accelerator The use of bubbler with float valve can improve the uniformity of gas bubbling, reduce the leakage of tray, improve the efficiency of tray and increase the flexibility of operation. 9 Anti-rotation floating valve tray Aiming at the problem that ordinary floating valves are easy to rotate and fall off, a new fixing method is adopted to make the floating valve not rotate. This technology is combined with other pallet technologies. 10 inclined jet floating valve tray organically combines the performance of floating valve tray and inclined hole tray. 1 1 is embedded in the new tray connection structure of hinged tray, which can increase the number of floating valves by 25% and eliminate the blind area at the tray connection, which not only increases the tray handling capacity, but also improves the tray efficiency. The connection area of 12 can be equipped with a floating valve, which has high opening rate and uniform valve distribution, and eliminates the stagnation point on the tower plate. 13 ADV fixed valve tray strengthens the gas-liquid mass transfer in the valve headspace, and reduces the gas flow around the valve and its impact entrainment. The notch or opening of the valve cover is directional, and the gas flow can push the liquid forward to reduce the height of the liquid layer on the tower plate and eliminate the liquid stagnation area on the tower plate, thus helping to improve the flux and efficiency of the tower plate. High separation efficiency, large capacity and strong anti-clogging ability. Suitable for systems with easy polymerization, coking, solid particles and strong corrosiveness. The tray of 14 three-way valve makes the gas flow push the liquid to move in the downcomer direction, and at this time, it alternately pushes the liquid to move to the left and right sides to eliminate the reflux area; Compared with F 1, the pallet capacity is increased by 40% and the efficiency is increased by 20%. The tongue hole of 15 floating valve-tongue hole composite tray increases the opening rate, pushes the liquid to move left and right, makes the liquid layer uniform, has long residence time, eliminates the reflux zone, and greatly improves the tray production capacity and efficiency. 16 new floating valve tray has changed the structure of the existing floating valve tray, increased the gas-liquid contact surface area, improved the tray efficiency and increased the production capacity. 17 rotary valve makes the airflow between adjacent floating valves rotate, reducing the hedge between adjacent valves, making the tower structure simple and convenient for equipment processing. 18 legless float valve simplifies structure, saves cost and improves performance. 19 multistage annular bulk packing has the advantages of excellent mass transfer performance, small resistance, large production capacity, simple structure, high mechanical strength and easy processing, which can greatly improve the production capacity and mass transfer efficiency of industrial distillation columns, absorption columns, washing columns and extraction columns. The invention relates to a method and a device for synthesizing acetic acid by low-pressure carbonylation of methanol, which combine the functions of an existing evaporator and a light removal tower into a multifunctional tower, thereby simplifying the process route of acetic acid preparation and shortening the return route of a catalyst. 2 1 a multifunctional tower used in the process of synthesizing acetic acid by carbonyl group, wherein a streamline distributor is arranged at the entrance of the multifunctional tower to replace the evaporator and the light removal tower in the existing acetic acid production device or the light removal tower in the existing acetic acid production device. It can reduce the equipment investment of acetic acid plant, effectively reduce the loss of catalyst and reduce the production cost. A flasher used in the process of carbonyl synthesis of acetic acid or acetic anhydride is equipped with a streamlined two-phase separation distributor at the feed position, which can strengthen gas-liquid separation, make gas distribution uniform, effectively reduce entrainment, and thus significantly reduce catalyst loss.