Farina online digestor and digestion method thereof

Abstract

A farina online digesting method belongs to the field of farinaceous size digestion, and solves the problems that the existing pot-type digestor has a large volume, low automation degree and energy consumption and cannot be continuously produced. The inventive method comprises a steam injection digesting step in which the high temperature steam is used to digest water farinaceous size, and the digested farina paste is output; a farina paste homogeneous step in which the digested farina past is homogenized, and the homogeneous farina paste is output; a farina paste diluting step in which the homogeneous farina paste is diluted, and the finished farina paste is output; a finished product farina paste storage step in which the finished product farina paste is stored in a storage tank; and an operation control method in which the above each step is controlled by a control cabinet and the operation control includes automatic and manual operation control. In the online digesting method the steam injection heating is used to complete the farina digestion, the volume of the digestor is greatly reduced, and the cost is lowered; the water farinaceous size is directly contacted with the steam, can be used during the digestion, continuous production is realized, the thermal conversion rate is high, and the energy is saved; and the operation control is provided with a PLC control system, so the automation degree is high.

Description

technical field [0001] The invention relates to a starch paste slurry cooking, in particular to an online starch cooking device and a cooking method thereof. Background technique [0002] In the paper industry, traditional starch paste slurry tank cooking equipment (referred to as starch tank cooking equipment) such as figure 1 As shown, the cooking equipment is composed of a water starch configuration tank 11, a preheating tank 12, a cooking tank 13, a dilution tank 14, and a finished product tank 15. The hot tank 12 and the cooking tank 13 are respectively provided with steam coil pipelines G2 and G3, and the tanks are connected by pipelines and delivery pumps P1-P5. [0003] The above-mentioned starch tank type cooking equipment has the following disadvantages: [0004] 1. The volume is huge, so the on-site installation period is long, the pressurization device is unsafe, the plant area is large, the investment is large, and the energy consumption is large. If the cook...

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Problems solved by technology

[0005] 2. The degree of automation is low and the requirements for the factory building are high

[0006] 3. The heating tank equipment is bulky and has a large heat capacity, and the heating time for each start is long (nearly 60 minutes)

In order to increase the heat conversion rate, the heating tank must work in a pressurized state, which will increase the pressure resistance level of the pipeline and the heating tank, which will inevitably lead to an increase in equipment investment and many unsafe problems

[0007] 4. This kind of starch tank cooking equipment is a discontinuous production. It takes an hour to process 6 tons of starch slurry, which is time-consuming and wastes energy.

[0008] For this reason, the industry urgently needs starch cooking products that are economical, energy-saving, easy to transform, and highly automated, so as to change the problems of expensive and low thermal efficiency of existing complete sets of starch cooking equipment.

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