High-solid-content low-VOC (low-volatile organic compound) polymer polyol production device and process

Abstract

The invention discloses a high-solid-content low-VOC polymer polyol production device and process. The high-solid-content low-VOC polymer polyol production device comprises a tank, the inside of the tank is fixedly provided with flapping cavities which are horizontally symmetric, transmission cavities horizontally symmetric are arranged between the flapping cavities and inside the tank, inside thetransmission cavities are provided with inner cavities inside the tank, sliding cavities vertically symmetric are communicated between the inner cavities and the transmission cavities, an inner cavity s arranged between the inner cavities and inside the tank, a middle bock is fixed between the front end wall and the rear end wall of the inner cavity, the left end surface and the right end surfaceof the middle block are horizontally symmetrically provided with an vertically symmetric extension shaft in a rotary mode, and the extension shaft is rotatingly connected in a matched mode with the end wall of the inner cavity. The high-solid-content low-VOC polymer polyol production device is simple in structure and convenient to use, and by coordinating different groups of transmission structures through rectangular belt transmission and achieving quantitative and rapid discharging of chemical liquids through different switch valves improves the precision and the production efficiency.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a production equipment and process for preparing polymer polyols with high solid content and low VOC. Background technique [0002] The manufacture of polymer polyols is generally produced by a batch method. Specifically, during production, carboxylic acid and glycol are first added to the reactor to melt, and nitrogen is introduced to react to generate water, which is gradually evaporated, and a low-polyester mixture ( Low-molecular-weight polyester polyol), with the evaporation of water, the temperature in the kettle gradually increases, and the vacuum degree gradually increases. In this process, it is often necessary to add and precisely control each liquid chemical agent, and there will be a corresponding control valve structure. The existing liquid control structure is single and has poor coordination. This equipment is effective fixed the issue. Contents of the invention [000...

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Problems solved by technology

[0002] The manufacture of polymer polyols is generally produced by a batch method. Specifically, during production, carboxylic acid and glycol are first added to the reactor to melt, and nitrogen is introduced to react to generate water, which is gradually evaporated, and a low-polyester mixture ( Low-molecular-weight polyester polyol), with the evaporation of water, the temperature in the kettle gradually increases, and the vacuum degree gradually increases. In this process, it is often necessary to add and precisely control each liquid chemical agent, and there will be a corresponding control valve structure. The existing liquid control structure is single and has poor coordination. This equipment is effective fixed the issue

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