Technology for liquefying chlorine through medium-temperature and medium-pressure method

Abstract

The invention relates to a liquefaction technology, in particular to a technology for liquefying chlorine through a medium-temperature and medium-pressure method. The invention provides a technology for liquefying chlorine through a medium-temperature and medium-pressure method, which requires less equipment and low energy consumption, and is stable and safe to operate. Electrolyzed chlorine subjected to drying is pressed to 7kgf / cm<2> through a compressor and then enters a liquefier, and after the chlorine is cooled through cooling water at 7 DEG C, 92 percent of the chlorine is liquefied. The liquefier adopts pure water at 7 DEG C to perform cooling, cold energy is provided through a steam refrigerating unit, and exhaust steam of a thermoelectric steam turbine is served as a refrigerating source. An ORP (oxidation-reduction potential) online monitor is installed on a cooling return water device of the liquefier. The unit is provided with a temperature control system, and ensures that the temperature of cold water is constant at 7 to 8 DEG C, so that the stability of the pressure and the purity of a system are guaranteed. As the ORP online monitor is installed on the cooling return water device of the liquefier, the working situation of the liquefier is monitored online, once leakage happens, a user can immediately know and take corresponding measures. The technology has the characteristics that the quantity of equipment is small, the energy consumption is low, and the technology is stable and safe to operate.

Description

technical field [0001] The invention relates to liquefaction technology, in particular to a technology for liquefying chlorine gas by a medium temperature and medium pressure method. Background technique [0002] The traditional liquefaction technology has the disadvantages of high power consumption, the leakage of the liquefier is not easy to find, the use of freon in freezing will be banned soon, and the use of liquid ammonia may cause the accident of Chongqing Tianyuan Chemical Plant in 2004. Contents of the invention [0003] The purpose of the present invention is to provide a medium-temperature and medium-pressure liquefied chlorine technology with less equipment, low energy consumption, stable operation and safety. The technical solution is to pressurize the electrolytic chlorine gas to 7kgf / cm after being dried by the compressor 2 After entering the liquefier, 92% of the chlorine gas is liquefied after being cooled by 7°C cooling water. The liquefier is cooled by...

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Problems solved by technology

[0002] The traditional liquefaction technology has the disadvantages of high power consumption, difficulty in finding the leakage of the liquefier, the use of freon in freezing will soon be banned, and the use of liquid ammonia may cause the accident in Chongqing Tianyuan Chemical Plant in 2004

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