A starch cooking device and its starch cooking process

Abstract

The invention discloses a starch cooking device. The starch cooking device comprises a reaction tank, a first pump body, a cooker and a first storage tank, wherein the reaction tank is connected with a stirrer for stirring the inside of the reaction tank; the lower part of the reaction tank, the first pump body and the lower part of the cooker are connected sequentially through a pipeline; a second switching valve is arranged on a pipeline at the upper part of the reaction tank, the pipeline passing through the second switching valve is divided into two ways to be connected with the upper part of the cooker and the first storage tank respectively; a first switching valve and a fourth switching valve are arranged on a pipeline connected with the first storage tank, a blowdown pipe is arranged on the pipeline between the first switching valve and the fourth switching valve, and a third switching valve is arranged on the blowdown pipe. The starch cooking device is initiative at home, is a focus in the industry, has considerable operability and stability and is a reference example for other industries. 5.3 million yuan is expected to be saved every year, and the device makes a great contribution to cost reduction. COD (chemical oxygen demand) emission is reduced, and pressure for later-stage water ring treatment is relieved.

Description

technical field [0001] The invention relates to the technical field of papermaking technology, in particular to a starch cooking device and a starch cooking process thereof. Background technique [0002] The advantages of coated starch as an auxiliary adhesive compared with pure latex: (1) reduce costs; (2) good water retention, optimize the rheological properties of coatings; (3) significantly improve the stiffness of paper and ink absorption; (4) Improve the printability of the paper; if the coating starch with special multi-component groups is used, the COD and BOD values ​​of wastewater can be significantly reduced. Starch is the main source of COD in wastewater. In the cooking section in the process of using starch coating, incomplete products are produced during the process of reaching the standard temperature, which will cause waste. Nowadays, the pressure on environmental protection is high. In the process of heating up to the standard temperature The production of ...

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Problems solved by technology

Starch is the main source of COD in wastewater. In the cooking section in the process of using starch coating, incomplete products are produced during the process of reaching the standard temperature, which will cause waste. Nowadays, the pressure on environmental protection is high. In the process of heating up to the standard temperature The production of incomplete products results in complete waste

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