Device and method for recycling HCl and Cl2

The invention relates to a device and a method for recycling HCl and Cl2. The device sequentially comprises a gas-liquid filter, a Cl2 absorbing device and an HCl absorbing device according to a separation sequence, wherein the Cl2 absorbing device is further connected with a Cl2 desorbing device, and the HCl absorbing device is further connected with an HCl desorbing device. The method comprises the following steps: absorption and desorption. The process device and method disclosed by the invention have the beneficial effects that the purifying rate of tail gas is high, the recycling rates of HCl and Cl2 are high, and an absorbent can be repeatedly utilized, so that the environmental pollution caused by emission is avoided, the production cost is lowered, and the economic benefit is increased. 种回收HCl和Cl的装置和方法，其中，装置按照分离顺序依次包括连接的气液过滤器、Cl吸收装置、HCl吸收装置，所述Cl吸收装置还连接有Cl解吸装置，所述HCl吸收装置还连接有HCl解吸装置；方法包括以下步骤：吸收-解吸。本发明中的工艺方法和装置的有益效果是：尾气净化率高，HCl和Cl的回收率高，吸收剂可重复利用，避免了排放的环境污染，降低了生产成本，提高了经济效益。