Preliming reactor and method

A reactor and pre-ashing technology, which is applied in application, sucrose production, purification using alkaline earth compounds, etc., can solve problems such as greater impact on clarification efficiency, loss of sugar, changes in pre-ashed cane juice, etc., to ensure sucrose production and quality, Guaranteed rotation speed and effect, and the effect of reducing flow fluctuation

Inactive Publication Date: 2014-04-02
南宁苏格尔科技有限公司
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Problems solved by technology

[0005] The addition ratio of phosphoric acid in pre-ash has a great influence on the clarification efficiency. The addition of phosphoric acid in the prior art adopts the manual adding method of quantitative hourly, without considering the flow rate of sugarcane juice, which makes the pH of pre-ash sugarcane juice change greatly, which affects the quality of subsequent processes. Sulfur fumigation neutralizes the control and stability of pH value
On the setting of phosphoric acid addition point, prior art sugarcane juice has just added phosphoric acid before entering the mixed juice box, causing the pH value of the cane juice in the mixed juice box to be reduced to the neutral range of 6.8-7.2, because the cane juice at this time The

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  • Preliming reactor and method

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Embodiment 1

[0053] Such as figure 1 As shown, the preash reactor provided in this embodiment includes a cylinder body 1, a juice inlet pipe 2, a juice outlet pipe 3, a stirring device 4, a pH control device, a flow control device, a phosphoric acid adder 13 and a frequency conversion juice outlet pump 5;

[0054] The frequency conversion juice pump 5 communicates with the cylinder body 1 through the juice outlet pipe 3;

[0055] The pH control device detects the pH of the sugarcane juice at the outlet of the juice inlet pipe 2, and controls the pH of the sugarcane juice entering the cylinder 1 by controlling the amount of lime milk added;

[0056] The flow control device detects the liquid level information in the cylinder 1 and the juice flow rate of the juice outlet pipe 3, controls the speed of the frequency conversion juice outlet pump 5 according to the liquid level information and the juice flow rate, and transmits the control signal according to the juice flow rate To phosphoric a...

Embodiment 2

[0075] The present embodiment pre-ashing method comprises the following steps:

[0076] During the squeezing process before the pre-ashing process, the pH of the sugarcane juice output by controlling the squeezing process is 6.8;

[0077] a. The pH control device presets the pH control range parameters, detects the pH of the sugarcane juice in the juice inlet pipe, calculates the amount of lime milk that needs to be added in real time according to the difference between the pH value of the sugarcane juice and the preset value, and controls the pH of the sugarcane juice in the juice inlet pipe to be 7.5 ;

[0078]b. The flow control device detects the flow of sugarcane juice in the juice pipe through the flow detector, and A / D converts the flow information into a flow value signal, transmits it to the flow controller, compares it with the preset flow value, and passes the calculation result through The D / A is converted into a current signal and sent to the juice frequency conv...

Embodiment 3

[0082] The present embodiment pre-ashing method comprises the following steps:

[0083] During the squeezing process before the pre-ashing process, the pH of the sugarcane juice output by controlling the squeezing process is 8.0;

[0084] a. The pH control device presets the pH control range parameters, detects the pH of the sugarcane juice in the juice inlet pipe, calculates the amount of lime milk that needs to be added in real time according to the difference between the pH value of the sugarcane juice and the preset value, and controls the pH of the sugarcane juice in the juice inlet pipe to be 9.5 ;

[0085] b. The flow control device detects the flow of sugarcane juice in the juice pipe through the flow detector, and A / D converts the flow information into a flow value signal, transmits it to the flow controller, compares it with the preset flow value, and passes the calculation result through The D / A is converted into a current signal and sent to the juice frequency con...

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Abstract

The invention provides a preliming reactor, which comprises a cylinder, a juice inlet pipe, a juice outlet pipe, a stirring device, a pH control device, a flow control device, a phosphoric acid adder and a variable-frequency juice outlet pump; the variable-frequency juice outlet pump is communicated with the cylinder through the juice outlet pipe; the pH control device is used for detecting and controlling the pH of cane juice at the juice inlet pipe; the flow control device is used for detecting the flow information of the juice outlet pipe, and controlling the operating speed of the variable-frequency juice outlet pump according to the flow information, thus controlling output flow; and the phosphoric acid adder is used for adding phosphoric acid into the bottom of the cylinder or the juice outlet pipe. The invention further provides a preliming method by utilizing the preliming reactor. According to the preliming reactor and method, the large emergent flow change cannot occur in the follow-up procedures through the flow control of the preliming reactor, the stability of the follow-up procedures can be guaranteed, and further the output and quality of cane sugar can be guaranteed.

Description

technical field [0001] The invention relates to the field of sugar cane sugar making process equipment, in particular to a preash reactor and a method. Background technique [0002] my country's cane sugar factories mostly use the sulfite clarification process to produce white granulated sugar for direct consumption. In the production control of the sulfite clarification process, the stability of the flow rate and pH value of the pre-ash cane juice has an important impact on the process control of the subsequent production links. It is directly related to production indicators such as product quality and sugar recovery. [0003] The existing technology balances the amount of cane squeezed per hour by installing automatic control on the press machine. However, due to the different types of sugarcane and storage time, the amount of cane juice squeezed out still fluctuates greatly, and the instantaneous flow rate fluctuations usually reach 15-20%. , Some sugar factories that ha...

Claims

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Application Information

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IPC IPC(8): C13B20/00C13B20/02C13B20/12
Inventor 薛原莫达松李泽强秦庆平黎有方任光宋
Owner 南宁苏格尔科技有限公司
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