CN104048284A - High temperature solid heat recovery waste heat boiler and waste heat recovery method - Google Patents
High temperature solid heat recovery waste heat boiler and waste heat recovery method Download PDFInfo
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Abstract
The invention provides a high temperature solid heat recovery waste heat boiler and a waste heat recovery method. The boiler is placed vertically and is in a shape of a barrel; a material inlet is formed in the upper part of the boiler, and a material outlet is formed in the lower part of the boiler; one path of water supply above 4.5 MPa of a boiler system enters an inlet of a high-parameter economizer, is sent to a high-parameter steam pocket after being heated in the high-parameter economizer, and forms high-parameter saturated boiler water above 4.0 MPa in the high-parameter steam pocket; the high-parameter saturated boiler water enters a high-parameter front evaporator and a high-parameter evaporator respectively along with a high-parameter boiler downcomer, a steam-water mixture is formed, the steam-water mixture backflows and enters the high-parameter steam pocket through a high-parameter boiler riser, steam-water separation is performed in the high-parameter steam pocket, high-parameter saturated steam above 4.0 MPa is formed, the high-parameter saturated steam reenters a high-parameter low temperature superheater and a high-parameter high temperature superheater, and thus high-parameter superheated steam above 200 DEG C is formed. By adopting the high temperature solid heat recovery waste heat boiler and the waste heat recovery method, heat of high temperature solid particles is directly transformed into the high-parameter superheated steam, and the thermal efficiency is improved.
Description
Technical field
The present invention relates to a kind of waste heat boiler, relate in particular to a kind of waste heat boiler that high-temperature solid particle heat is directly reclaimed, be specially adapted to the waste heat recovery of blast furnace slag, electroslag.
Background technology
Waste heat boiler refer to utilize the heat energy of high temperature material to be converted into medium (water, steam or organic working medium) thus the equipment that is used of heat energy.
The operation principle of conventional waste heat boiler, that employing is air-cooled as heat transferring medium, high-temperature solid particle high-temp solid is come cooling by wind, the hot blast obtaining by waste heat boiler, makes waste heat boiler produce hot water, vapours or other high temperature organic working medium for user again.
Because conventional waste heat boiler adopts wind as heat transferring medium, need successively twice heat exchange, the heat comprising in high-temperature solid particle can be absorbed, therefore, in this heat transfer process, there is a large amount of energy loss (flue gas loss), power consumption (main air-introduced machine) and leak the problems such as wind-induced quality of material loss.
Summary of the invention
The object of this invention is to provide a kind of method of high-temp solid heat recovery waste heat boiler and recovery waste heat, solve a large amount of energy losses, the power consumption that conventional waste heat boiler exists in heat exchange and the problem such as leak out.
For achieving the above object, the technical solution used in the present invention is:
A kind of high-temp solid heat recovery waste heat boiler, is characterized in that: described boiler vertical display and be tubular, and its top has material inlet, and bottom has material outlet;
High parameter front-packed evaporator, high parameter high temperature superheater, high parameter low temperature superheater, high parameter evaporimeter, high parameter economizer and low parameter evaporimeter are from top to bottom installed in described boiler, are provided with high parameter drum, low parameter drum outward at boiler; The feedwater of steam generator system Yi road is joined with the import of high parameter economizer, the outlet of high parameter economizer and described high parameter drum join, high parameter drum connects respectively high parameter front-packed evaporator and high parameter evaporimeter by high parameter boiler down-comer, reflux and connect high parameter drum by high parameter boiler tedge again, after the high parameter saturated vapor forming is connected with described high parameter low temperature superheater, join with the import of described high parameter high temperature superheater again in described high parameter drum.
In technical scheme preferably: low parameter evaporimeter is also installed in boiler, is also provided with low parameter drum outward at boiler;
Low parameter drum is sent in another road feedwater of steam generator system, low parameter drum connects low parameter evaporimeter by low parameter boiler down-comer, refluxed and connected low parameter drum by low parameter boiler tedge again, the low parameter saturated vapor forming in described low parameter drum is discharged downstream.
In technical scheme preferably: the furnace wall of described boiler be by the many steel pipes of vertically arranging around the water-cooling wall forming, between adjacent described steel pipe, join with steel plate, in described steel pipe, be connected with the steam water interface under relative pressure saturation temperature.
In technical scheme preferably: described water-cooling wall is divided into mutual disconnected top water-cooling wall and bottom water-cooling wall, the water inlet of described top water-cooling wall and described high parameter boiler down-comer join, and the delivery port of described top water-cooling wall and described high parameter boiler tedge join; The water inlet of described bottom water-cooling wall and described low parameter boiler down-comer join, and the delivery port of described bottom water-cooling wall and described low parameter boiler tedge join.
In technical scheme preferably: be also provided with the disturbing rod along vertical layout in boiler.
In technical scheme preferably: be provided with rapping apparatus in water-cooling wall outside.
For achieving the above object, the technical solution used in the present invention is:
A method for high-temp solid heat recovery waste heat, is characterized in that: described boiler vertical display and be tubular, and its top has material inlet, and bottom has material outlet; The solid particle of high temperature is entered in boiler by material inlet, and relies on deadweight to flow downward, and flows out from described material outlet;
High parameter front-packed evaporator, high parameter high temperature superheater, high parameter low temperature superheater, high parameter evaporimeter and high parameter economizer are from top to bottom installed in described boiler, are provided with high parameter drum outward at boiler;
The import that enters high parameter economizer of feeding water of the above Yi of steam generator system 4.5MPa road, sends into high parameter drum after water heats in high parameter economizer, forms the saturated stove water of the above high parameter of 4.0MPa in high parameter drum; High parameter saturation water enters respectively high parameter front-packed evaporator and high parameter evaporimeter along high parameter boiler down-comer, and form steam water interface, steam water interface is refluxed and is entered high parameter drum by high parameter boiler tedge, in high parameter drum, carry out carbonated drink separation, form high parameter saturated vapor more than 4.0MPa, high parameter saturated vapor enters high parameter low temperature superheater and high parameter high temperature superheater more successively, again pass through heat exchange, form the high parameter superheated steam of the more than 200 DEG C degree of superheat.
In technical scheme preferably: low parameter evaporimeter is also installed in boiler, is also provided with low parameter drum outward at boiler;
Low parameter drum is sent in another road feedwater of steam generator system, form the saturated stove water of low parameter more than 0.4MPa, the saturated stove water of low parameter enters low parameter evaporimeter along low parameter boiler down-comer, the steam water interface producing enters low parameter drum by low parameter boiler tedge, in low parameter drum, carry out carbonated drink separation, form low parameter saturated vapor more than 0.4MPa.
In technical scheme preferably: the furnace wall of described boiler is around the water-cooling wall forming by the many steel pipes of vertically arranging, between adjacent described steel pipe, join with steel plate, in described steel pipe, be connected with the steam water interface under relative pressure saturation temperature, described water-cooling wall is divided into mutual disconnected top water-cooling wall and bottom water-cooling wall, the water inlet of described top water-cooling wall and described high parameter boiler down-comer join, and the delivery port of described top water-cooling wall and described high parameter boiler tedge join; The water inlet of described bottom water-cooling wall and described low parameter boiler down-comer join, and the delivery port of described bottom water-cooling wall and described low parameter boiler tedge join.
In technical scheme preferably: at material outlet, place is provided with outlet valve, controls the flow velocity of solid particle in boiler by controlling the aperture of this outlet valve.
Compared with prior art, the beneficial effect that the present invention has is:
1, undesirable gas secondary heat exchange of the present invention, is directly directly conducted to high parameter superheated steam by the heat containing in solid particle, can, for generating, improve the thermal efficiency.
2, solid particle of the present invention is difficult for stopping up, and heat transfer rate is controlled.
3, boiler of the present invention adopts water-cooling wall, can avoid heat in body of heater toward external radiation, avoids heat waste.
Brief description of the drawings
Fig. 1 is the front section view of a preferred embodiment of high-temp solid heat recovery waste heat boiler provided by the invention;
Fig. 2 is the cross section amplification view of a preferred embodiment of high-temp solid heat recovery waste heat boiler provided by the invention.
Description of reference numerals: material inlet 1; Material outlet 2; Outlet valve 3; Top water-cooling wall 41; Bottom water-cooling wall 42; Steel pipe 43; Steel plate 44; High parameter front-packed evaporator 5; High parameter high temperature superheater 61; High parameter low temperature superheater 62; The first high parameter evaporimeter 71; The second high parameter evaporimeter 72; High parameter economizer 8; Low parameter evaporimeter 9; High parameter drum 10; Low parameter drum 11; Disturbing rod 12; Rapping apparatus 13; Feedwater piping 14; High parameter boiler down-comer 15; High parameter boiler tedge 16; Low parameter boiler down-comer 17; Low parameter boiler tedge 18; Feedwater A, B; The line of demarcation C of top and bottom water-cooling wall.
Detailed description of the invention
As shown in Figure 1 and Figure 2, it is the schematic diagram of a preferred embodiment of high-temp solid heat recovery waste heat boiler provided by the invention, described boiler vertical display and be tubular, its top has material inlet 1, bottom has the material outlet 2 of taper, is provided with outlet valve 3 in material outlet 2 lowest positions; As can see from Figure 2, the furnace wall of described boiler is around the water-cooling wall 41,42 forming by the many steel pipes 43 of vertically arranging, between adjacent described steel pipe 43, join with steel plate 44, make the high-temperature solid particle holding in described furnace wall can be from the gap leakage between steel pipe 43 not out, in described steel pipe 43, be connected with the steam water interface under relative pressure saturation temperature, can utilize steam water interface to absorb the heat of described high-temperature solid particle on the one hand, can avoid on the other hand the overheated generation thermal loss in furnace wall.
Described water-cooling wall is divided into mutual disconnected top water-cooling wall 41 and bottom water-cooling wall 42, and water-cooling wall 41,42 forms by steel pipe 43 and steel plate 44; Steel pipe 43 spacing of top water-cooling wall 41 are 50-70mm, and steel pipe 43 spacing of bottom water-cooling wall 42 are 90-110mm.
As shown in Figure 1, high parameter front-packed evaporator 5, high parameter high temperature superheater 61, high parameter low temperature superheater 62, the first high parameter evaporimeter 71, the second high parameter evaporimeter 72, high parameter economizer 8 and low parameter evaporimeter 9 are from top to bottom installed successively in described boiler, they respectively with boiler outside high parameter drum 10 or low parameter drum 11 join, the heat comprising in the solid particle by described boiler is absorbed and is passed.
Specifically, the blast furnace slag (electroslag or other particle) of the 1450 DEG C left and right of particle diameter between 1-5mm enters water-cooling wall 41 by the material inlet 1 of upper boiler, in 42 cylindrical shells that surround, solid particle and top water-cooling wall 41 tops in cylindrical shell, the heat exchanger tube of high parameter front-packed evaporator 5 is by contact heat conduction heat exchange, temperature drops to behind 950 DEG C of left and right, pass through successively high parameter high temperature superheater 61, high parameter low temperature superheater 62, the first high parameter evaporimeter 71, the second high parameter evaporimeter 72 and high parameter economizer 8, temperature drops to below 400 DEG C.Afterwards, the solid particle low parameter evaporimeter 9 of flowing through, by contacting with the heat exchanger tube of bottom water-cooling wall 42, low parameter evaporimeter 10 after heat conduction heat exchange, temperature is down to below 200 DEG C, finally discharges body of heater by lower part outlet valve 3.Solid particle relies on dead weight to flow, and by controlling the aperture of this outlet valve 3, can control the flow velocity of solid particle in boiler, and the flowing velocity general control of solid particle is below 1.5m/s.
For prevent the solid particle delay of putting up a bridge in boiler, in boiler, be also provided with the disturbing rod 13 along vertical layout, and be provided with eccentric rapping apparatus 14 in top water-cooling wall 41 outsides, can impel solid particle to fall smoothly in boiler.
The import that enters high parameter economizer 9 of feeding water of the above Yi of steam generator system 4.5MPa road, water is heated to lower than 15 DEG C of left and right of the saturated water temperature of high parameter in high parameter economizer 9, send into high parameter drum 10 by outlet and the feedwater piping 14 of high parameter economizer 8 afterwards, at the saturated stove water of the above high parameter of the interior formation of high parameter drum 10 4.0MPa, high parameter saturation water enters respectively high parameter front-packed evaporator 5 along high parameter boiler down-comer 15, the first high parameter evaporimeter 71, the second high parameter evaporimeter 72 and described top water-cooling wall 41 (being entered by top), and at high parameter front-packed evaporator 5, the first high parameter evaporimeter 71, in the second high parameter evaporimeter 72 and described top water-cooling wall 41, metal pipe-wall forms steam water interface with contacting after heat is conducted heat exchange of solid particulate matter, steam water interface is refluxed and is entered high parameter drum 10 by high parameter boiler tedge 16, in high parameter drum 10, carry out carbonated drink separation, form high parameter saturated vapor more than 4.0MPa, high parameter saturated vapor enters high parameter low temperature superheater 62 and high parameter high temperature superheater 61 more successively, again pass through heat exchange, form gradually the high parameter superheated steam of the more than 200 DEG C degree of superheat, described high parameter superheated steam can be directly used in generating.The parameter of the high parameter steam generally obtaining is more than 3.8MPa450 DEG C.
Low parameter drum 11 is sent in another road feedwater of steam generator system, form the saturated stove water of low parameter more than 0.4MPa, the saturated stove water of low parameter enters low parameter evaporimeter 9 and bottom water-cooling wall 42 (being entered by bottom) along low parameter boiler down-comer 17, the saturated stove water of low parameter produces steam water interface contact heat conduction heat exchange with solid particulate matter after, steam water interface enters low parameter drum 11 by low parameter boiler tedge 18, in low parameter drum 11, carry out carbonated drink separation, form low parameter saturated vapor more than 0.4MPa, low parameter saturated vapor is discharged from low parameter drum 11 tops, deliver to low-pressure steam pipe network or as the filling of steam turbine for generating.The operating pressure of the low parameter steam generally obtaining is more than 0.4MPa.
Beneficial effect of the present invention is: utilize solid particle material directly to contact conduction heat exchange with waste heat boiler heating surface, heat free of losses; Utilize solid particle to flow in cylinder, flow without dead angle; Utilize dual pressure system, cooling solid granule materials to greatest extent, improves waste heat recovery rate; Directly produce high-grade steam, utilization of steam is wide.
Claims (10)
1. a high-temp solid heat recovery waste heat boiler, is characterized in that: described boiler vertical display and be tubular, and its top has material inlet, and bottom has material outlet;
High parameter front-packed evaporator, high parameter high temperature superheater, high parameter low temperature superheater, high parameter evaporimeter, high parameter economizer and low parameter evaporimeter are from top to bottom installed in described boiler, are provided with high parameter drum, low parameter drum outward at boiler; The feedwater of steam generator system Yi road is joined with the import of high parameter economizer, the outlet of high parameter economizer and described high parameter drum join, high parameter drum connects respectively high parameter front-packed evaporator and high parameter evaporimeter by high parameter boiler down-comer, reflux and connect high parameter drum by high parameter boiler tedge again, after the high parameter saturated vapor forming is connected with described high parameter low temperature superheater, join with the import of described high parameter high temperature superheater again in described high parameter drum.
2. high-temp solid heat recovery waste heat boiler according to claim 1, is characterized in that: low parameter evaporimeter is also installed in boiler, is also provided with low parameter drum outward at boiler;
Low parameter drum is sent in another road feedwater of steam generator system, low parameter drum connects low parameter evaporimeter by low parameter boiler down-comer, refluxed and connected low parameter drum by low parameter boiler tedge again, the low parameter saturated vapor forming in described low parameter drum is discharged downstream.
3. high-temp solid heat recovery waste heat boiler according to claim 1, it is characterized in that: the furnace wall of described boiler is around the water-cooling wall forming by the many steel pipes of vertically arranging, between adjacent described steel pipe, join with steel plate, in described steel pipe, be connected with the steam water interface under relative pressure saturation temperature.
4. high-temp solid heat recovery waste heat boiler according to claim 3, it is characterized in that: described water-cooling wall is divided into mutual disconnected top water-cooling wall and bottom water-cooling wall, the water inlet of described top water-cooling wall and described high parameter boiler down-comer join, and the delivery port of described top water-cooling wall and described high parameter boiler tedge join; The water inlet of described bottom water-cooling wall and described low parameter boiler down-comer join, and the delivery port of described bottom water-cooling wall and described low parameter boiler tedge join.
5. high-temp solid heat recovery waste heat boiler according to claim 1, is characterized in that: in boiler, be also provided with the disturbing rod along vertical layout.
6. high-temp solid heat recovery waste heat boiler according to claim 1, is characterized in that: be provided with rapping apparatus in water-cooling wall outside.
7. a method for high-temp solid heat recovery waste heat, is characterized in that: described boiler vertical display and be tubular, and its top has material inlet, and bottom has material outlet; The solid particle of high temperature is entered in boiler by material inlet, and relies on deadweight to flow downward, and flows out from described material outlet;
High parameter front-packed evaporator, high parameter high temperature superheater, high parameter low temperature superheater, high parameter evaporimeter and high parameter economizer are from top to bottom installed in described boiler, are provided with high parameter drum outward at boiler;
The import that enters high parameter economizer of feeding water of the above Yi of steam generator system 4.5MPa road, sends into high parameter drum after water heats in high parameter economizer, forms the saturated stove water of the above high parameter of 4.0MPa in high parameter drum; High parameter saturation water enters respectively high parameter front-packed evaporator and high parameter evaporimeter along high parameter boiler down-comer, and form steam water interface, steam water interface is refluxed and is entered high parameter drum by high parameter boiler tedge, in high parameter drum, carry out carbonated drink separation, form high parameter saturated vapor more than 4.0MPa, high parameter saturated vapor enters high parameter low temperature superheater and high parameter high temperature superheater more successively, again pass through heat exchange, form the high parameter superheated steam of the more than 200 DEG C degree of superheat.
8. the method for high-temp solid heat recovery waste heat according to claim 7, is characterized in that: low parameter evaporimeter is also installed in boiler, is also provided with low parameter drum outward at boiler;
Low parameter drum is sent in another road feedwater of steam generator system, form the saturated stove water of low parameter more than 0.4MPa, the saturated stove water of low parameter enters low parameter evaporimeter along low parameter boiler down-comer, the steam water interface producing enters low parameter drum by low parameter boiler tedge, in low parameter drum, carry out carbonated drink separation, form low parameter saturated vapor more than 0.4MPa.
9. the method for high-temp solid heat recovery waste heat according to claim 8, it is characterized in that: the furnace wall of described boiler is around the water-cooling wall forming by the many steel pipes of vertically arranging, between adjacent described steel pipe, join with steel plate, in described steel pipe, be connected with the steam water interface under relative pressure saturation temperature, described water-cooling wall is divided into mutual disconnected top water-cooling wall and bottom water-cooling wall, the water inlet of described top water-cooling wall and described high parameter boiler down-comer join, and the delivery port of described top water-cooling wall and described high parameter boiler tedge join; The water inlet of described bottom water-cooling wall and described low parameter boiler down-comer join, and the delivery port of described bottom water-cooling wall and described low parameter boiler tedge join.
10. the method for high-temp solid heat recovery waste heat according to claim 7, is characterized in that: at material outlet, place is provided with outlet valve, controls the flow velocity of solid particle in boiler by controlling the aperture of this outlet valve.
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CN105157439A (en) * | 2015-08-31 | 2015-12-16 | 太仓英达锅炉设备有限公司 | Novel boiler |
CN105624349A (en) * | 2016-03-17 | 2016-06-01 | 苏州海陆重工股份有限公司 | Boiler using waste heat generated after dry granulation of blast furnace slag |
CN105925279A (en) * | 2016-06-30 | 2016-09-07 | 中国重型机械研究院股份公司 | Method for recovering waste heat of high-temperature coke breeze organic heat carrier |
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WO2020029047A1 (en) * | 2018-08-06 | 2020-02-13 | 江苏东九重工股份有限公司 | High temperature solid heat recovery waste heat boiler and method for recovering waste heat |
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US10845048B2 (en) * | 2017-05-31 | 2020-11-24 | Solex Thermal Science Inc. | Method and apparatus for recovery of heat from bulk solids |
CN107326128A (en) * | 2017-07-18 | 2017-11-07 | 重庆赛迪热工环保工程技术有限公司 | A kind of ion dust mud contaning rotary hearth furnace handling process |
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WO2020029047A1 (en) * | 2018-08-06 | 2020-02-13 | 江苏东九重工股份有限公司 | High temperature solid heat recovery waste heat boiler and method for recovering waste heat |
US11506722B2 (en) * | 2019-05-31 | 2022-11-22 | Weiss Technik Gmbh | Illumination device and test chamber |
US11507199B2 (en) | 2021-03-30 | 2022-11-22 | Cirrus Logic, Inc. | Pseudo-differential phase measurement and quality factor compensation |
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