Chlorine-free refrigerant replacement for chiller

On September 29th, from Jilin Petrochemical and Calcium Carbide Plant, China's first centrifugal chiller-free replacement technology for fluorine-free refrigerants was introduced and successfully applied at Jilin Petrochemical and Calcium Carbide Plant. A number of operational indicators have reached the international advanced level. This indicates that China has completely grasped the core technology of replacing and updating environmentally friendly refrigerants, and provided a successful example for the environmental protection reform of large-scale chillers in the domestic petroleum and chemical industries, and also eliminated the use of fluorine-containing R11 (CCl3F)-type refrigerants within the company this year. A pressing need.
A large-scale centrifugal chiller is worth tens of millions of yuan, and more than 2,000 units used in the petrochemical industry use fluorine-containing R11 (CCl3F) refrigerants. According to the Montreal Protocol on Destruction of Ozone Layer Substances, R11 refrigerants must be banned and eliminated globally in 2010. This means that more than 2,000 installations used by domestic petrochemical companies must be rebuilt or replaced within the year. Prior to this, although companies have carried out technological breakthroughs in the replacement of refrigerants, no one has achieved success.
The technical personnel of water and gas system of Jilin Petrochemical Company introduced that the company adopts the internationally recognized safer refrigerant product R123 to replace and replace the R11 refrigerant, which not only can save the huge unit renewal cost, but also completely solve the R11 leakage and ozone depletion under emergencies. The safety and environmental risks. This achievement has recently obtained the provincial environmental certification certificate, Jilin Petrochemical Company is currently planning to use technology cooperation and other forms to promote its application. According to another report, the technical renovation of the company's chiller refrigerant has created 5.4 million yuan in economic benefits so far.
It is understood that the centrifugal chiller of Jilin Petrochemical Company’s calcium carbide plant bears the task of supplying 200 tons/hour of low-temperature water. As early as July 2007, the environment-friendly refrigerant replacement technology project was established at the Jilin Petrochemical Carbide Plant and a full-scale technical demonstration and practice was conducted in the same year. This is also the first time in China that R123 has been identified as a refrigerant replacing R11 centrifugal refrigeration unit. Experimental project. Because there is no technical reference template and relevant experience in the country, there have been phenomena such as unsatisfactory separation of refrigerant and unit oil and failure to match the float valve in the experimental process. In order to overcome this series of problems, technical personnel conducted a series of inspections and studies for domestic R123 refrigerants for up to six months, and finally determined the ratio models. By May 2009, they had completed the replacement of three sets of FLZ1000 chiller refrigerants. After more than one year of safe operation and monitoring, the technical monitoring indicators fully meet the requirements, and they have been recognized by the Jilin Provincial Ministry of Safety and Environmental Protection, and the technical environmental protection certificate has been granted.