Jinan Yuhong Thermal Energy Equipment Co., Ltd. Contact: Chen Yutao Mobile Phone: 13864086360
Address: No. 125 Wang Zhouzhuang, Qiandian Town, Huaiyin Section, Jinan City, Shandong Province
Main Products: Waste heat recovery, waste heat recovery device, waste heat recovery manufacturers
Qifa Pharmaceutical-Waste steam waste heat recovery
Update Time: 2018-02-06 Hits: 2249
The waste heat recovery device has been successfully used in the pharmaceutical industry. Since 2007, the pharmaceutical industry has produced a large amount of high-temperature steam after the fermentation tanks of the equipment have been sterilized. The domestic hot water produced by the waste steam after heat recovery can be effectively used. The waste waste heat recovery device can not only reduce the degree of pollution, but also perform effective recycling.
Application of waste heat recovery device in the sulfuric acid industry In the sulfuric acid production process, SO2 emits a lot of heat when it is oxidized to SO3 through a contactor, so that the temperature of the dry gas of SO3 reaches 200-300 ° C. At this time, the gas needs to be cooled before entering the absorption section. This part of the heat is often wasted. At this time, a gas-liquid waste heat recovery device is used to recover the heat of the SO3 gas to heat the hot water for the alkali-alkali process. The hourly waste heat recovery is 892 MJ. The equipment is calculated based on 7000 working hours per year. The recovered fuel is equivalent to 214.5 t of standard coal. In addition, in the sulfuric acid industry, between the pyrite boiling furnace and the process electrostatic precipitator, and between the sulfur incinerator and the conversion section, a heat pipe waste heat boiler can be used to recover the high-temperature waste heat of the process gas above 950 ℃ to generate medium-pressure steam for power generation or process. .
Application of waste heat recovery device in petrochemical enterprises. Anqing Petrochemical Refinery's decompression furnace used a heat pipe air preheater to recover the flue gas waste heat in 1995. The flue gas was reduced from 365 ℃ to 165 ℃ and the air temperature was increased from the inlet temperature of 20 ℃ 220 ℃, recovers heat 8.82GJ per hour. The successful use of this heat pipe air preheater shows that the waste heat recovery device can be used in some severe conditions in the petrochemical industry that use high sulfur fuels.
Many heating furnaces and cracking furnaces in petrochemical companies, such as naphtha cracking furnaces for the production of ethylene, the exhaust temperature is generally between 200 and 400 ° C, and the exhaust gas after combustion is often not conducive to emptying. The preheater uses this part of the exhaust gas to preheat the combustion air, which can achieve a good energy saving effect. Many heating furnaces at home and abroad use a combination of two or three types of waste heat recovery devices to recover the high temperature waste heat of the flue gas.
That is, the high-temperature flue gas is first reduced to 500 to 600 ° C through a waste heat boiler, and steam of 1.9 to 3 MPa is generated. The cooled flue gas is preheated to 250 ° C by an air preheater, and the flue gas temperature falls below 300 ° C. The heat pipe economizer heats the deoxidized water at 105 ° C to about 250 ° C, and the flue gas temperature drops below 300 ° C, which is sent to the chimney through an induced draft fan for discharge. This process has great economic advantages.