Tail gas absorption treatment device in phosphorus pentasulfide production process

Abstract

The invention discloses a tail gas absorption treatment device in a phosphorus pentasulfide production process. The device is provided with a gas-collecting hood, the gas-collecting hood is positioned at the top of a workshop, an exhaust pipe is connected to the gas-collecting hood, a powerful suction fan is connected to the exhaust pipe, the exhaust pipe is connected with the bottom of a primary absorption tower, a gas collecting pipe is arranged at the top of the primary absorption tower, the gas collecting pipe is connected with the bottom of a secondary absorption tower, an emptying pipe is arranged at the top of the secondary absorption tower; the primary absorption tower and the secondary absorption tower are filled with sodium hydroxide alkali liquor, alkali liquor circulating pumps are arranged on one side of the bottom of the primary absorption tower and the secondary absorption tower, alkali liquor spraying pipes are arranged on the tops of the primary absorption tower and the secondary absorption tower, and the alkali liquor circulating pumps circularly convey the alkali liquor in the absorption towers to the spraying pipes on the tops of the absorption towers for spraying; valves are arranged on the devices and the connecting pipelines of the devices as required; the device solves the problem of serious tail gas pollution in the production process of phosphorus pentasulfide, and is suitable for wide popularization and application.

Description

technical field [0001] The invention relates to the technical field of phosphorus pentasulfide production, in particular to a tail gas absorption and treatment device in the production process of phosphorus pentasulfide. Background technique [0002] During the production process of phosphorus pentasulfide, various toxic gases are easily produced. Because the production of phosphorus pentasulfide is generally carried out by the liquid phase method, the raw materials yellow phosphorus and sulfur are first gasified and then liquefied, and then fed into the reactor for reaction. The local reaction temperature is very high, and a large amount of phosphorus and sulfur Gasification, the tail gas pipe of the reactor has more smoke. The main components of the tail gas are toxic gases such as phosphorus pentoxide, sulfur dioxide, phosphorus-sulfur compounds and yellow phosphorus vapor. When the air pressure is low, the smoke permeates around the workshop and the factory, seriously ...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in view of the relatively high content of toxic tail gas in the current production process of phosphorus pentasulfide, which is relatively serious to the health of the workers in the factory and the surrounding residents and the pollution of the surrounding environment, and to provide a production process of phosphorus pentasulfide Exhaust gas absorption treatment device

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