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Method for removing sugar of and purifying boiler water for sugar refinery

A boiler and boiler water technology, which is applied in sucrose production, sugar production, boiling/evaporation of sugar solution, etc., can solve problems such as sugar content, and achieve the effects of reducing harm, stable operation and low operating cost

Inactive Publication Date: 2010-06-02
钮德明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned literatures have not completely and stably solved the problem of sugar content in the supplementary hot steam condensate water of the boiler inlet water.

Method used

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  • Method for removing sugar of and purifying boiler water for sugar refinery
  • Method for removing sugar of and purifying boiler water for sugar refinery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The temperature reaches about 105°C, and the second-effect condensate water containing more than 50ppm of sugar first passes through the heater (plate heat exchanger) 9 to exchange heat with the treated clean fresh water, and then enters the cooler (plate heat exchanger) 1 Let cool to room temperature. The cooled condensed water passes through the secondary filter (combination of mechanical filter and activated carbon filter) 3 and security filter 4 to remove particulate suspended matter, pressurizes through the high-pressure pump 5, and then passes through the reverse osmosis device 6 to remove Contained sugar and other harmful impurities in the second-effect condensed water are made into clean fresh water, which is directly delivered to the clean fresh water storage tank 7 for storage. Use the clean fresh water pump 8 to send the clean fresh water to the heater (plate heat exchanger) 9 to exchange heat with the second-effect condensate water at about 105°C, heat it to...

Embodiment 2

[0029] The mixed condensed water with a temperature of about 90°C and containing more than 200ppm of sugar first passes through the heater (plate heat exchanger) 9 to exchange heat with the treated clean fresh water, and then enters the cooler (cooling tower) 1 to cool down to normal temperature . The cooled condensed water passes through the secondary filter (combination of sand filter tank and activated carbon filter) 3 and security filter 4 to remove particulate suspended matter, pressurizes through the high-pressure pump 5, and then passes through the reverse osmosis device 6 to remove Sugar and other harmful impurities contained in the mixed condensed water are made into clean fresh water, which is directly delivered to the clean fresh water storage tank 7 for storage. Use the clean fresh water pump 8 to send the clean fresh water to the heater (plate heat exchanger) 9 to exchange heat with the mixed condensate water at about 90°C, heat it to about 80°C, and send it to th...

Embodiment 3

[0031]The temperature reaches about 105°C, and the second-effect condensate water containing more than 50ppm of sugar, first passes through the heater (screw plate heat exchanger) 9 to exchange heat with the treated clean fresh water, and then enters the cooler (plate heat exchanger) 1 Cool to room temperature. The cooled condensed water passes through the secondary filter (combination of mechanical filter and activated carbon filter) 3 and the security filter 4 to remove particulate suspended matter, pressurizes through the high-pressure pump 5, and then passes through the reverse osmosis device 6 to remove Contained sugar and other harmful impurities in the second-effect condensed water are made into clean fresh water, which is directly delivered to the clean fresh water storage tank 7 for storage. Use the clean fresh water pump 8 to send the clean fresh water to the heater (spiral plate heat exchanger) 9 to exchange heat with the second-effect condensate water at about 105°...

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Abstract

The invention relates to a sugar-removing and purification method for the complemented boiler water in a boiler of a sugar mill, which adopts the reverse osmosis technique to treat condensate and reliably removes the sugar content and other inimical impurities in the condensate, as well as providing the boiler with complemented boiler water. The method has the technical process that: hot condensate implements the thermal exchange with the treated clean fresh water through a heater 9 firstly, then enters a cooler 1 to be cooled to the normal temperature, the cooled condensate is removed with particle suspended matters by a one-level or multistage filter 3 and a security filter 4, then is removed with the sugar content and other inimical impurities through the pressure of a high pressure pump 5 and a reverse osmosis device 6, the condensate is made into the clean fresh water which is directly fed to a clean fresh water storage tank 7 for storage. A clean fresh water pump 8 feeds the clean fresh water to the heater 9 to conduct the thermal exchange with the hot condensate and then the water is fed to a feed tank of the boiler after being heated for replenishing the boiler water of theboiler. The sugar-removing and purification method saves great production water supply, heat energy and investment for sugar refineries, and has advantages of low running cost and stable operation.

Description

technical field [0001] The invention relates to a method for treating boiler supplementary boiler water in sugar production. Background technique [0002] The incoming water for boilers in sugar factories mainly comes from exhausted steam condensate and qualified water softened by raw water. Raw water is used as a supplementary water source for boiler incoming water. The operating cost of boilers is high, and it is not conducive to water conservation and emission reduction. The hot condensate produced by evaporation and cooking sugar is a good supplementary water source for the boiler water. The hot condensate includes the second-effect condensate and the mixed condensate. The second-effect condensate contains 50-200ppm trace sugar, the temperature The temperature reaches about 105°C; the mixed condensed water contains 100-250ppm of trace sugar, and the temperature reaches about 80°C. Remove sugar and other harmful impurities from hot steam condensate, and use hot steam con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44C13G1/04C13B25/02
Inventor 钮德明
Owner 钮德明
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