CN201074869Y - Device for supplying heat using sulfuric acid production low temperature waste heat - Google Patents
Device for supplying heat using sulfuric acid production low temperature waste heat Download PDFInfo
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- CN201074869Y CN201074869Y CNU2007200236147U CN200720023614U CN201074869Y CN 201074869 Y CN201074869 Y CN 201074869Y CN U2007200236147 U CNU2007200236147 U CN U2007200236147U CN 200720023614 U CN200720023614 U CN 200720023614U CN 201074869 Y CN201074869 Y CN 201074869Y
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Abstract
The utility model belongs to the field of devices for utilizing waste heat, which particularly relates to a temperature-regulated device which heats by utilizing sulfate to produce low-temperature residual heat. The utility model comprises an acid cooler which comprises a tube side and a shell side, wherein the shell side is connected with a sulfate inlet tube and a sulfate outlet tube, the tube side is connected with a circulating water inlet tube and a circulating water outlet tube which are evenly provided with valves. The utility model is characterized in that the tube side of the acid cooler is further connected with a heating device through a pipeline, which recovers and utilizes the low-temperature residual heat in producing sulfate, and saves the power source and cost which are needed in heating, and has he advantages of saving energy and reducing consumption, and convenient maintenance, and is convenient to improve the prior arts.
Description
Technical field
The utility model belongs to used heat and utilizes apparatus field, is specifically related to a kind of device that utilizes residual heat of sulfuric acid production to heat.
Background technology
In China, gas washing in SA production comprises acid production with sulphur, pyrite-based sulfuric acid production, metallurgical off-gas acid-making, and the above-mentioned acid preparation method overwhelming majority adopts more advanced double-absorption acid-making process, in the relieving haperacidity process, the heat that chemical reaction produces is appreciable, fully recycling these heats is vital tasks of sulfuric acid process industry, in the double-absorption acid-making process, usually 800-1000 in the roasting process ℃ waste heat is called high-temperature residual heat, account for 60% of waste heat total amount, warm waste heat during the waste heat in the conversion process about 500 ℃ is called, account for 15% of waste heat total amount, about 100 ℃ waste heat is called low temperature exhaust heat in the dried suction process, accounts for 25% of waste heat total amount, and high-temperature residual heat and middle temperature waste heat are because the temperature height, therefore recycle than being easier to, the low temperature exhaust heat temperature is low, and the acid temperature is relevant with the concentration of acid, in pyrite-based sulfuric acid production, one concentration of inhaling acid and two suction acid are 98%, the acid temperature is about 100 ℃, and the concentration of dry acid is 93%, and sour temperature is about 70 ℃; In acid production with sulphur technology, a concentration of inhaling acid, two suction acid, dry acid is 98%, and sour temperature is about 100 ℃.Because recovery difficult is big, therefore most of gas washing in SA production producer does not reclaim low temperature exhaust heat, the acid that has low temperature exhaust heat that generally will the generate acid cooler of flowing through, carry out the heat exchange cooling with circulating water, do so not only that low temperature exhaust heat is not used, and, also need to use a large amount of cold water in order to reduce the temperature of acid, both waste the energy, wasted the water source again.
Summary of the invention
The purpose of this utility model provides a kind of energy-saving and cost-reducing device that utilizes residual heat of sulfuric acid production to heat.
The utility model is achieved through the following technical solutions: promptly a kind of device that utilizes residual heat of sulfuric acid production to heat, comprise acid cooler, acid cooler is divided into tube side and shell side, shell side with acid inlet tube, go out acid tube and be connected, tube side is connected with circulating water inlet, circulating water outlet pipe, be equipped with valve on circulating water inlet, the circulating water outlet pipe, it is characterized in that the tube side of acid cooler also is connected with heating installation by pipeline.
Described acid cooler is an anodic protection shell-and-tube acid cooler, and described heating system comprises hot-water tower, heat abstractor, the warm water tower; Hot-water tower is connected with the tube side of anodic protection shell-and-tube acid cooler by heating hydro-thermal water pipe; the warm water tower is connected with the tube side of anodic protection shell-and-tube acid cooler by heating water temperature water pipe; be equipped with valve on heating hydro-thermal water pipe, the heating water temperature water pipe; be connected by pipeline between hot-water tower and the heat abstractor; pipeline is provided with heat-exchanger pump; be connected by pipeline between heat abstractor and the warm water tower, heating water temperature water pipe is provided with warm water pump, and the warm water tower is connected with the additional tower of heating recirculated water by pipeline.As utilize low temperature exhaust heat to offer the heat of heating recirculated water when equaling to heat the recirculated water dispersed heat, can adopt as above to be provided with and heat, when loss appears in heating recirculated water, replenish tower additional an amount of heating recirculated water in the warm water tower by heating recirculated water and get final product.
Hot-water tower is connected with heating recirculated water heating device by pipeline, is provided with tube connector between hot-water tower and the warm water tower, and tube connector is provided with valve.When the heat that utilizes low temperature exhaust heat to offer heating recirculated water during, or during the temporary parking of gas washing in SA production equipment, be to guarantee heating, can carry out complementary heating by heating recirculated water heating device heating recirculated water less than heating recirculated water dispersed heat.Heating recirculated water heating device can be selected steam boiler commonly used in the sulfuric acid manufacturing for use, also can adopt other can produce the equipment of high-temperature steam.
It is that 98% acid heats as thermal source heat cycles water that the utility model utilizes the concentration that generates in the double-absorption acid-making process, both recycled the low temperature exhaust heat in the gas washing in SA production, saved the heating needed energy and expense again, have energy-saving and cost-reducing, be convenient to safeguard, be convenient to advantage that prior art is transformed.Acid cooler in the utility model can adopt anodic protection shell-and-tube acid cooler, also can adopt the acid cooler of other types.When using anodic protection shell-and-tube acid cooler, because anodic protection shell-and-tube acid cooler generally adopts the manufacturing of 316L stainless steel, and the 316L stainless steel in the concentrated sulfuric acid passivation effect and the concentration and the temperature of sulfuric acid important relationship is arranged, concentration is that the maximum operation (service) temperature of 98% acid in anodic protection shell-and-tube acid cooler can not be higher than 120 ℃, but operate as normal is about 100 ℃; Concentration is that 93% the maximum operation (service) temperature of acid in anodic protection shell-and-tube acid cooler can not be higher than 70 ℃, so concentration is that 93% acid is not suitable as thermal source.It is 98% acid that heat supply in winter can only be selected concentration for use, and water or desalted water in the middle of heating recirculated water adopts are less scaling, helps prolonging the service life of acid cooler and heating system.The utility model does not destroy original gas washing in SA production equipment, is convenient to the gas washing in SA production equipment of prior art is transformed.In the spring that does not need to heat, summer, autumn, by closing the valve on heating hydro-thermal water pipe, the heating water temperature water pipe, the valve of opening on circulating water inlet, the circulating water outlet pipe gets final product.In the winter of needs heating, close the valve on circulating water inlet, the circulating water outlet pipe, the valve of opening on heating hydro-thermal water pipe, the heating water temperature water pipe can use.During normal the use, the heating recirculated water that only needs in time to replenish loss gets final product, and is convenient to safeguard.Through test, the temperature stabilization of the heating recirculated water of employing the utility model heating can satisfy the needs of heat supply in winter fully between 65 ℃～80 ℃.The utility model utilizes the low temperature exhaust heat in the gas washing in SA production to heat, and has both efficiently solved the difficult problem that low temperature exhaust heat is difficult to reclaim, and for enterprise has saved a large amount of heating costs, can be widely used in the gas washing in SA production enterprise again.
Description of drawings
Fig. 1 is the schematic diagram of the utility model embodiment 1;
Fig. 2 is the schematic diagram of the utility model embodiment 2;
As shown in FIG.: 1 circulating water outlet pipe, 2 valves, 3 valves; 4 heating hydro-thermal water pipes, 5 anodic protection shell-and-tube acid coolers, 6 heating water temperature water pipes; 7 valves, 8 valves, 9 circulating water inlets; 10 hot-water towers, 11 heat-exchanger pumps, 12 steam boilers; 13 valves, 14 tube connectors, 15 warm water towers; 16 heat abstractors, 17 heating recirculated waters replenish tower, 18 warm water pumps.
The specific embodiment
As shown in Figure 1: acid cooler is an anodic protection shell-and-tube acid cooler 5; the tube side of anodic protection shell-and-tube acid cooler 5 and circulating water inlet 9; circulating water outlet pipe 1 connects; the shell side and the acid inlet tube of anodic protection shell-and-tube acid cooler 5; going out acid tube connects; circulating water inlet 9; be respectively equipped with valve 8 on the circulating water outlet pipe 1; valve 2; hot-water tower 10 is connected with the tube side of anodic protection shell-and-tube acid cooler 5 by heating hydro-thermal water pipe 4; warm water tower 15 is connected with the tube side of anodic protection shell-and-tube acid cooler 5 by heating water temperature water pipe 6; heating hydro-thermal water pipe 4 is provided with valve 3; heating water temperature water pipe 6 is provided with valve 7; pipeline between hot-water tower 10 and the heat abstractor 16 is provided with heat-exchanger pump 11; heating water temperature water pipe 6 is provided with warm water pump 18, and warm water tower 15 replenishes tower 17 by pipeline with heating recirculated water and is connected.
The utility model is when the spring that does not need to heat, summer, autumn; valve 3, valve 7 are in closed condition; valve 2, valve 8 are in open mode; cooling circulating water is by the flow through tube side of anodic protection shell-and-tube acid cooler 5 of circulating water inlet 9, circulating water outlet pipe 1, and concentration is 98% acid by acid inlet tube, goes out the flow through shell side of anodic protection shell-and-tube acid cooler 5 of acid tube.
In the winter of needs heating; in warm water tower 15, injecting an amount of heating recirculated water by the additional tower 17 of heating recirculated water; water in the middle of heating recirculated water is selected for use; valve-off 2; valve 8; open valve 3 simultaneously; valve 7; under the effect of warm water pump 18; heating recirculated water in the warm water tower 15 flows into the tube side of anodic protection shell-and-tube acid cooler 5 by heating water temperature water pipe 6; with the concentration that flows in the shell side be that heat exchange is carried out in 98% acid. the heating recirculated water after the heating flows into hot-water towers 10 from heating hydro-thermal water pipe 4; under the effect of heat-exchanger pump 11; enter heat abstractor 16; heat abstractor 16 can be selected fin for use; through the heat radiation of heat abstractor 16, the temperature of heating recirculated water descends, and flows back to warm water tower 15; repeat said process; can realize continuing heating,, inject an amount of heating recirculated water by the additional tower 17 of heating recirculated water to warm water tower 15 and get final product if loss appears in heating recirculated water.
Present embodiment is applicable to that the low temperature exhaust heat that utilizes offers the situation of heat when equaling to heat the recirculated water dispersed heat of heating recirculated water.
As shown in Figure 2: hot-water tower 10 is provided with heating recirculated water heating device, and heating recirculated water heating device is a steam boiler 12, is provided with tube connector 14 between hot-water tower 10 and the warm water tower 15, and tube connector 14 is provided with valve 13, other same Fig. 1.
In the spring that does not need to heat, summer, autumn, present embodiment is with embodiment 1.
In the winter of needs heating, present embodiment is identical with embodiment 1 when normally heating.
In the winter of needs heating, when sulfuric acid dirt produces the equipment temporary parking, in order not influence heating, can close down warm water pump 18, open valve 13 simultaneously, hot-water tower 10 is communicated with warm water tower 15, carry a small amount of high-temperature low-pressure steam by steam boiler 12 in hot-water tower 10, the temperature of heating recirculated water in the maintaining heat water tower 10 is under the effect of heat-exchanger pump 11, heating recirculated water flows in the closed circuit that hot-water tower 10, heat abstractor 16, warm water tower 15 form, and carries out complementary heating.
In the winter of needs heating, the heat that offers heating recirculated water when the utilization low temperature exhaust heat is during less than heating recirculated water dispersed heat, the temperature of heating recirculated water can reduce gradually, in order not influence heating, can in hot-water tower 10, carry a small amount of high-temperature low-pressure steam by steam boiler 12, the temperature of heating recirculated water guarantees heating in the maintaining heat water tower 10.
The utility model is not limited to above embodiment, and heating recirculated water also can adopt desalted water or other less scaling water, the one type of prior art syringe of other that heating recirculated water heating device can adopt also that those skilled in the art expect.
Claims (4)
1. device that utilizes residual heat of sulfuric acid production to heat, comprise acid cooler, acid cooler is divided into tube side and shell side, shell side with acid inlet tube, go out acid tube and be connected, tube side is connected with circulating water inlet, circulating water outlet pipe, be equipped with valve on circulating water inlet, the circulating water outlet pipe, it is characterized in that the tube side of acid cooler also is connected with heating installation by pipeline.
2. a kind of device that utilizes residual heat of sulfuric acid production to heat according to claim 1 is characterized in that described acid cooler is an anodic protection shell-and-tube acid cooler, and described heating system comprises hot-water tower, heat abstractor, the warm water tower; Hot-water tower is connected with the tube side of anodic protection shell-and-tube acid cooler by heating hydro-thermal water pipe; the warm water tower is connected with the tube side of anodic protection shell-and-tube acid cooler by heating water temperature water pipe; be equipped with valve on heating hydro-thermal water pipe, the heating water temperature water pipe; be connected by pipeline between hot-water tower and the heat abstractor; pipeline is provided with heat-exchanger pump; be connected by pipeline between heat abstractor and the warm water tower, heating water temperature water pipe is provided with warm water pump, and the warm water tower is connected with the additional tower of heating recirculated water by pipeline.
3. a kind of device that utilizes residual heat of sulfuric acid production to heat according to claim 2 is characterized in that hot-water tower is connected with heating recirculated water heating device by pipeline, is provided with tube connector between hot-water tower and the warm water tower, and tube connector is provided with valve.
4. a kind of device that utilizes residual heat of sulfuric acid production to heat according to claim 3, the recirculated water heating device that it is characterized in that heating is a steam boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200236147U CN201074869Y (en) | 2007-06-15 | 2007-06-15 | Device for supplying heat using sulfuric acid production low temperature waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200236147U CN201074869Y (en) | 2007-06-15 | 2007-06-15 | Device for supplying heat using sulfuric acid production low temperature waste heat |
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| Publication Number | Publication Date |
|---|---|
| CN201074869Y true CN201074869Y (en) | 2008-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200236147U Expired - Fee Related CN201074869Y (en) | 2007-06-15 | 2007-06-15 | Device for supplying heat using sulfuric acid production low temperature waste heat |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778143A (en) * | 2012-07-04 | 2012-11-14 | 黑龙江建龙钢铁有限公司 | Circulating ammonia water waste heat utilizing system |
| CN104528662A (en) * | 2015-01-16 | 2015-04-22 | 中国瑞林工程技术有限公司 | System for generating hot water by recovering low-temperature waste heat in process of making acid by using smoke |
| CN105905873A (en) * | 2016-04-22 | 2016-08-31 | 中国瑞林工程技术有限公司 | Technology for producing water by using low temperature waste heat and for recycling low temperature waste heat |
| CN110054162A (en) * | 2019-04-25 | 2019-07-26 | 吉林隆源骐化工有限责任公司 | A kind of anodic protection acid cooler to heat |
| CN111520796A (en) * | 2020-04-09 | 2020-08-11 | 赤峰云铜有色金属有限公司 | Method for removing and utilizing heat of absorbed circulating acid in sulfuric acid process |
-
2007
- 2007-06-15 CN CNU2007200236147U patent/CN201074869Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778143A (en) * | 2012-07-04 | 2012-11-14 | 黑龙江建龙钢铁有限公司 | Circulating ammonia water waste heat utilizing system |
| CN104528662A (en) * | 2015-01-16 | 2015-04-22 | 中国瑞林工程技术有限公司 | System for generating hot water by recovering low-temperature waste heat in process of making acid by using smoke |
| CN105905873A (en) * | 2016-04-22 | 2016-08-31 | 中国瑞林工程技术有限公司 | Technology for producing water by using low temperature waste heat and for recycling low temperature waste heat |
| CN110054162A (en) * | 2019-04-25 | 2019-07-26 | 吉林隆源骐化工有限责任公司 | A kind of anodic protection acid cooler to heat |
| CN111520796A (en) * | 2020-04-09 | 2020-08-11 | 赤峰云铜有色金属有限公司 | Method for removing and utilizing heat of absorbed circulating acid in sulfuric acid process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20160615 |
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| CF01 | Termination of patent right due to non-payment of annual fee |