CN203431901U - Waste heat boiler low-temperature utilizing system for heating desalted water - Google Patents
Waste heat boiler low-temperature utilizing system for heating desalted water Download PDFInfo
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- CN203431901U CN203431901U CN201320458725.6U CN201320458725U CN203431901U CN 203431901 U CN203431901 U CN 203431901U CN 201320458725 U CN201320458725 U CN 201320458725U CN 203431901 U CN203431901 U CN 203431901U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a waste heat boiler low-temperature utilizing system for heating desalted water and belongs to the technical field of thermal energy recycling. The waste heat boiler low-temperature utilizing system for heating the desalted water comprises a desalting water tank, a water pump and a pipeline heated surface configured in a waste heat boiler low-temperature flue; the desalting water tank and the heated surface are connected by an inlet header and an outlet header respectively; the water pump is arranged on a pipeline between the desalting water tank and the inlet header. According to the waste heat boiler low-temperature utilizing system for heating the desalted water, a low-temperature utilizing system of a waste eat boiler is adopted, low-temperature waste heat can be further recycled and the energy utilization rate can be improved, and the water temperature of the desalted water is improved for achieving a better flocculation effect and improving the quality of the chemically prepared desalted water.
Description
Technical field
The utility model relates to a kind of waste heat boiler energy use technology, and particularly a kind of low temperature of waste heat boiler utilizes technology.
Background technology
Since Eleventh Five-Year Plan, under the guidance of the Scientific Outlook on Development, the Chinese government carries forward vigorously energy-saving and emission-reduction, and promotion is developed a circular economy, and has driven the great development of energy-conserving and environment-protective industries, has obtained the achievement attracting people's attention.According to statistics, 2010, adopt nearly 83,000,000,000 yuans of the machine-processed energy conservation service industry production value of Energy Management Contract (EMC), the environmental protection industry gross output value reaches 2 trillion yuan, number of employees 2,800 ten thousand people.Along with the in depth development at a high speed of energy-conserving and environment-protective industry, how the energy is carried out to deeper utilization and become current problem.
The waste heat boiler extensively utilizing of take is example, in the winter time, the particularly north and western highlands, due to ambient air temperature extremely low (general subzero), demineralized water temperature is on the low side, causes demineralized water flocculating effect not good, water quality is difficult to guarantee; The technological requirement water temperature of preparing demineralized water in engineering is 27 ℃ of left and right, and keeps stable.Therefore cold external environment condition, totally unfavorable to preparing demineralized water.For boiler feed water quality defective by cause steam salinity too high, cause heat-transfer effect to worsen and equipment caused to the reason of corrosion, waste heat boiler user usually utilizes high-quality thermal source (as saturated vapor) to heat demineralized water for this reason, cause high-grade energy waste, reduced the efficiency of having exerted oneself, affected boiler of boiler.
Utility model content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of waste heat boiler low temperature that heats demineralized water to utilize system, be mainly used in the cogeneration engineering of north cold area or highlands, by further recovery low temperature exhaust heat, improve capacity usage ratio, improve demineralized water water temperature simultaneously and reach good flocculating effect, thereby improve chemistry water quality processed.
The technical solution adopted in the utility model is as follows:
The waste heat boiler low temperature of heating demineralized water of the present utility model utilizes system, comprise sweet-water tank, water pump and be arranged in the pipeline heating surface in waste heat boiler low temperature flue, between wherein said sweet-water tank and heating surface, by entrance header, be connected with outlet header respectively, on the pipeline between described sweet-water tank and entrance header, be provided with water pump.
Owing to having adopted said structure, wherein heating surface is arranged in waste heat boiler low temperature flue, and flue gas has passed through desulphurization denitration flue herein, can effectively avoid cold end corrosion, make working medium in heating surface become counter-flow arrangement with flue gas in low temperature flue, to improve heat transfer temperature difference; The heating surface of arranging in waste heat boiler low temperature flue, can determine according to the flue-gas temperature of the desalination water yield, entrance demineralized water temperature, low temperature flue, applied widely; Be furnished with entrance header entering on the pipeline of heating surface, be conducive to the distribution of working medium; On the pipeline that flows out heating surface, be furnished with outlet header, be conducive to fully eliminate the working medium temperature difference; Water pump can be sent in the heating surface being arranged in waste heat boiler low temperature flue and heat by the water in sweet-water tank by entrance header, and the water after heating is returned in sweet-water tank by outlet header.
The waste heat boiler low temperature of heating demineralized water of the present utility model utilizes system, and described water pump adopts variable frequency pump, adopts connecting pipe to be communicated with between wherein said sweet-water tank, variable frequency pump, entrance header and heating surface; Between described heating surface, outlet header and sweet-water tank, adopt connecting pipe to be communicated with.
Owing to having adopted said structure, in the connecting pipe of heating surface, be furnished with a variable frequency pump entering, its specification should be determined according to the water temperature of sweet-water tank and the desalination water yield, water pump adopts variable frequency pump, thereby can realize the control to output by controlling variable frequency pump, each equipment in the utility model is communicated with by connecting pipe, is convenient to form feed flow and returns liquid.
The waste heat boiler low temperature of heating demineralized water of the present utility model utilizes system, in described sweet-water tank, be provided with temperature-measuring element, described temperature-measuring element is connected on frequency converter by backfeed loop, and described frequency converter is connected with variable frequency pump, controls the flow of variable frequency pump.
Owing to having adopted said structure, for the water temperature of controlling sweet-water tank is in processing range, by temperature-measuring element, water temperature signal is fed back to frequency converter by backfeed loop, Frequency Converter Control variable frequency pump power, thereby the water temperature in assurance sweet-water tank, in processing range, realizes the effect of controlling pump capacity.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1, the waste heat boiler low temperature of heating demineralized water of the present utility model utilizes system, simple in structure, easy and simple to handle, easy to use, and the flocculating effect that has not only improved water further reduces exhaust gas temperature, improved capacity usage ratio;
2, the waste heat boiler low temperature of heating demineralized water of the present utility model utilizes system, and the low temperature of employing waste heat boiler utilizes system can further reclaim low temperature exhaust heat raising capacity usage ratio, raising demineralized water water temperature reaches good flocculating effect, improves chemistry demineralized water quality processed.
Accompanying drawing explanation
Fig. 1 is the system schematic of embodiment in the utility model.
Mark in figure: 1-heating surface, 2-variable frequency pump, 3-connecting pipe, 4-backfeed loop, 5-temperature-measuring element, 6-sweet-water tank, 7-entrance header, 8-outlet header, S-low-temperature flue gas.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the waste heat boiler low temperature of heating demineralized water of the present utility model utilizes system, comprise sweet-water tank 6, water pump and be arranged in the pipeline heating surface 1 in waste heat boiler low temperature flue, wherein water pump is variable frequency pump 2, and described sweet-water tank 6, variable frequency pump 2, entrance header 7 and heating surface 1 are communicated with by connecting pipe 3 successively; And described heating surface 1, outlet header 8 and sweet-water tank 6 are communicated with by connecting pipe 3 successively; In described sweet-water tank 6, be provided with temperature-measuring element 5, described temperature-measuring element 5 is connected on frequency converter by backfeed loop 4, and described frequency converter is connected with variable frequency pump 2, controls the flow of variable frequency pump 2.
The waste heat boiler low temperature of heating demineralized water of the present utility model utilizes system, variable frequency pump 2 is sent into the water in sweet-water tank 6 in the heating surface 1 being arranged in waste heat boiler low temperature flue and is heated by entrance header 7, and the water after heating is returned in sweet-water tank 6 by outlet header 8; For the water temperature of controlling sweet-water tank is in processing range, by temperature-measuring element 5, water temperature signal is fed back to frequency converter by backfeed loop 4, the power of Frequency Converter Control variable frequency pump 2, carries out water temperature adjusting thereby control pump capacity.The water being wherein arranged in the heating surface 1 of waste heat boiler low temperature flue, the entrance header 7 being connected with heating surface 1, outlet header 8 and variable frequency pump 2 comes from sweet-water tank 6, for the water temperature of controlling sweet-water tank is in processing range, by temperature-measuring element 5, water temperature signal is fed back to frequency converter by backfeed loop 4, Frequency Converter Control pump power, carries out water temperature adjusting thereby control pump capacity.
The waste heat boiler low temperature of heating demineralized water of the present utility model utilizes system, its workflow comprises: first, in waste heat boiler low temperature flue, arrange heating surface 1, the water temperature that the form structure of heating surface 1 etc. need to maintain according to the discharge capacity amount of low-temperature flue gas S, flue-gas temperature, sweet-water tank 6 and chemical water consumption are determined; Secondly, variable frequency pump 2 is sent into the water in sweet-water tank 6 in heating surface 1 and is heated through entrance header 7, and working medium is flowed in sweet-water tank 6 by outlet header 8 subsequently; For the water temperature in sweet-water tank 6 regulates, in sweet-water tank 6, be furnished with temperature-measuring element 5, temperature-measuring element 5 is connected with frequency converter, by backfeed loop 4, temperature signal is fed back to frequency converter, with this, control variable frequency pump flow, thereby control water temperature in sweet-water tank 6.
The technological requirement water temperature of preparing demineralized water in engineering is 27 ℃ of left and right, at this temperature, the flocculating effect of water is best, the flocculating effect that has not only improved water by utility model further reduces exhaust gas temperature, has improved capacity usage ratio, make the utility model to 20MW waste heat boiler unit, chemistry needs water 96t/h, improve 20 ℃ of demineralized water temperature, exhaust gas temperature reduces by 13 ℃ of left and right, and boiler efficiency approximately improves 2.3%.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a waste heat boiler low temperature that heats demineralized water utilizes system, it is characterized in that: it comprises sweet-water tank (6), water pump and is arranged in the pipeline heating surface (1) in waste heat boiler low temperature flue, between wherein said sweet-water tank (6) and heating surface (1), by entrance header (7), be connected with outlet header (8) respectively, on the pipeline between described sweet-water tank (6) and entrance header (7), be provided with water pump.
2. the waste heat boiler low temperature of heating demineralized water as claimed in claim 1 utilizes system, it is characterized in that: described water pump adopts variable frequency pump (2), between wherein said sweet-water tank (6), variable frequency pump (2), entrance header (7) and heating surface (1), adopt connecting pipe (3) to be communicated with; Between described heating surface (1), outlet header (8) and sweet-water tank (6), adopt connecting pipe (3) to be communicated with.
3. the waste heat boiler low temperature of heating demineralized water as claimed in claim 2 utilizes system, it is characterized in that: in described sweet-water tank (6), be provided with temperature-measuring element (5), described temperature-measuring element (5) is connected on frequency converter by backfeed loop (4), described frequency converter is connected with variable frequency pump (2), controls the flow of variable frequency pump (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320458725.6U CN203431901U (en) | 2013-07-30 | 2013-07-30 | Waste heat boiler low-temperature utilizing system for heating desalted water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320458725.6U CN203431901U (en) | 2013-07-30 | 2013-07-30 | Waste heat boiler low-temperature utilizing system for heating desalted water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431901U true CN203431901U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320458725.6U Expired - Fee Related CN203431901U (en) | 2013-07-30 | 2013-07-30 | Waste heat boiler low-temperature utilizing system for heating desalted water |
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| CN (1) | CN203431901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059025A (en) * | 2018-07-23 | 2018-12-21 | 浙江巨化热电有限公司 | A kind of smoke comprehensive processing unit and its method |
-
2013
- 2013-07-30 CN CN201320458725.6U patent/CN203431901U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059025A (en) * | 2018-07-23 | 2018-12-21 | 浙江巨化热电有限公司 | A kind of smoke comprehensive processing unit and its method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20180730 |