CN1081312C - Method for recovering waste heat from scoria - Google Patents
Method for recovering waste heat from scoria Download PDFInfo
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- CN1081312C CN1081312C CN 98123555 CN98123555A CN1081312C CN 1081312 C CN1081312 C CN 1081312C CN 98123555 CN98123555 CN 98123555 CN 98123555 A CN98123555 A CN 98123555A CN 1081312 C CN1081312 C CN 1081312C
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- slag
- heat exchanger
- recyclegas
- scoria
- gas
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Abstract
The present invention relates to a method for recovering waste heat from scoria. Solid hot scoria which is processed by a roller device is continuously input into a gas scoria heat exchanger for carrying out heat exchange with recycle gas, the recycle gas is heated, and the cooling scoria is continuously discharged from the gas scoria heat exchanger. The heated recycle gas is input into a waste heat boiler, heat quantity of the recycle gas is absorbed by water in the heating pipe, and water is converted to superheated steam with 0.8 to 1.6MPa of pressure and 170 to 260 DEG C of temperature. The cooled recycle gas is input into the gas scoria heat exchanger again through pressurization for recirculation. Steam can be continuously generated by the method for production use, and the extracted cooling scoria can still be used as an active additive agent or concrete aggregate of cement, so the resource is fully used.
Description
The present invention relates to a kind of method for recovering waste heat from scoria, belong to the steam generation method that heat carrier is a hot slag.
That the clear 58-110901 of Japan Patent discloses is a kind of " blast-furnace slag waste heat recovery apparatus-slag boiler) ", the fusing blast-furnace slag that feeds from the slag inlet, by with each boiler tube between the slag passage that on limits boiler bottom plate, designs that is connected, flow between boiler tube, the slag passage design is on the sliding panel of slidably equipping on the boiler bottom plate.After the fusing blast furnace slag flowed between each boiler tube, sliding panel drove it by the sliding panel drive unit and moves isolated with slag passage between each boiler tube.After solidifying, base plate utilizes downward two the opening of suitable mechanism, and the bar-shaped slag that solidifies is easy to break away from between boiler tube, can not be blocked in the chute.This equipment adopts sliding panel to solve former pectination solidified slag whereabouts difficulty, blocking problem in chute.But this device is a heat accumulating type can only intermittently be produced, and can't be used for must the quantity-produced power boiler.The slag that can only be used for good fluidity resembles the big slags of viscosity such as vessel slag and then can't use.That Russ P RU2018494 discloses is a kind of " slag processing method and device for carrying out said thereof) ", the high-temperature liquid state slag is injected in the drum apparatus of rotation, when slag is sharply cooled off when steel ball in placing cylinder contacts, bits are changed into crisp shape mouldable state and are set in spherome surface by liquid state, since collision each other between the motion of spheroid and spheroid, bits be fractured into be about 700 ℃, diameter is less than the solid-state slag particle of 120mm.This drum apparatus production capacity height also can be handled to the flowability difference even near solid-state slag, and at present, its product is used as the active additive when producing cement more, or aggregate, and heat energy is wasted in a large number.
The purpose of this invention is to provide a kind of method for recovering waste heat from scoria, the solid-state warm sludge that utilizes drum apparatus to produce recurs steam, uses for producing, and with energy savings, reduces production costs.
The objective of the invention is to realize by following technical solution.
A kind of method for recovering waste heat from scoria, its technical process is as follows:
(1) 600～700 ℃ solid-state warm sludge after will being handled by drum apparatus is input to continuously in the gas slag heat exchanger and carries out heat exchange with recyclegas, recyclegas is heated to 350～400 ℃, and slag is cooled to below 200 ℃ by discharging continuously in the gas slag heat exchanger;
(2) Jia Re recyclegas is transfused to waste heat boiler, and the water in the boiler heating tube absorbs the heat of recyclegas, is transformed into the superheated steam of 170～260 ℃ of pressure 0.8～1.6MPa, temperature, and recyclegas is cooled to below 180 ℃;
(3) cooled recyclegas re-enters to gas slag heat exchanger through the circulating fan supercharging, and so forth circulation.
The recyclegas of heating is imported waste heat boiler after purified treatment, make waste heat boiler exempt from the wearing and tearing of thin slag particle, improves service life.
Solid-state warm sludge after being handled by drum apparatus at first is transported in its discharge port and the warm sludge jar that gas slag heat exchanger charging aperture links to each other, is input in the gas slag heat exchanger by the warm sludge jar again.Because the warm sludge jar can store hundreds of tons of warm sludges, although so converter or tap cinder all be interrupted, also can guarantee the continuity of producing.
The cooled slag of being discharged by gas slag heat exchanger is introduced into cold slag ladle, controlledly discharges through its outlet valve again, to simplify subsequent processing device, helps keeping the site environment cleaning.
The advantage that the present invention is compared with prior art had is: the solid-state warm sludge that this method utilizes drum apparatus to produce recurs steam, uses for producing, and with energy savings, reduces production costs.Experiment shows: to handle the solid-state warm sludge calculating that 850,000 tons of drum apparatus are produced every year, chemical composition according to slag is the difference of interior enthalpy, adopt 1 year recyclable steam 12.5～25.5 ten thousand of this method ton, obtain net benefits 875～1,000 ten thousand yuan, save standard coal 1.1～30,000 ton.And the cold slag of its discharge still can be used as active additive or aggregate when producing cement, and resource is fully used.
Below in conjunction with drawings and Examples the present invention is discussed in detail.
Accompanying drawing is the process flow diagram of method for recovering waste heat from scoria of the present invention.
The slag truck ladle 2 of packing into of 700 ℃ solid-state warm sludge after will handling by drum apparatus, and it is transported to elevator 1 place by chassis, elevator 1 promotes and is transported to warm sludge jar 3 tops with slag truck ladle 2, warm sludge is packed in its discharge port and the warm sludge jar 3 that gas slag heat exchanger 4 charging apertures link to each other, be input to continuously in the gas slag heat exchanger 4 continuously on the chassis of running by warm sludge jar 3 again.Enter the warm sludge layer that recyclegas in the gas slag heat exchanger 4 pass on the chassis that traveling and carry out heat exchange.Recyclegas is heated to 400 ℃, and slag is cooled to 200 ℃ and enters cold slag ladle 5 by gas slag heat exchanger 4 outlet.The recyclegas of heating is imported into house steward, carries out purified treatment through deduster 6, the recyclegas input waste heat boiler 7 heating heating tube bundle heating surfaces that are cleaned.Water in boiler 7 heating tubes absorbs the heat of recyclegas, is transformed into the superheated steam of 260 ℃ of pressure 1.6MPa, temperature, for producing use.Recyclegas is cooled to 180 ℃ and leaves waste heat boiler 7, is recycled blower fan 8 superchargings then and circulates again and input in the gas slag heat exchanger 4, and so forth circulation.Cold slag in the cold slag ladle 5 is transported in its outlet valve controlledly is discharged to slag waggon 9.
Claims (4)
1. method for recovering waste heat from scoria is characterized in that it has following technical process:
(1) 600～700 ℃ solid-state warm sludge after will being handled by drum apparatus is input to continuously in the gas slag heat exchanger and carries out heat exchange with recyclegas, recyclegas is heated to 350～400 ℃, and slag is cooled to below 200 ℃ by discharging continuously in the gas slag heat exchanger;
(2) Jia Re recyclegas is transfused to waste heat boiler, and the water in the boiler heating tube absorbs the heat of recyclegas, is transformed into the superheated steam of 170～260 ℃ of pressure 0.8～1.6MPa, temperature, and recyclegas is cooled to below 180 ℃;
(3) cooled recyclegas re-enters to gas slag heat exchanger through the circulating fan supercharging, and so forth circulation.
2. method according to claim 1 is characterized in that: the recyclegas of described heating is imported waste heat boiler after purified treatment.
3. method according to claim 1 is characterized in that: described solid-state warm sludge after being handled by drum apparatus at first is transported in its discharge port and the warm sludge jar that gas slag heat exchanger charging aperture links to each other, is input in the gas slag heat exchanger by the warm sludge jar again.
4. method according to claim 1 is characterized in that: described cooled slag of being discharged by gas slag heat exchanger is introduced into cold slag ladle, controlledly discharges through its outlet valve again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98123555 CN1081312C (en) | 1998-10-29 | 1998-10-29 | Method for recovering waste heat from scoria |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98123555 CN1081312C (en) | 1998-10-29 | 1998-10-29 | Method for recovering waste heat from scoria |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1216812A CN1216812A (en) | 1999-05-19 |
| CN1081312C true CN1081312C (en) | 2002-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98123555 Expired - Fee Related CN1081312C (en) | 1998-10-29 | 1998-10-29 | Method for recovering waste heat from scoria |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1081312C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886881A (en) * | 2010-06-01 | 2010-11-17 | 鹤壁地恩地新材料科技有限公司 | New process for heat energy comprehensive utilization of magnesium slag in metal magnesium reduction furnace |
| CN102042767A (en) * | 2011-01-06 | 2011-05-04 | 宁夏华亿镁业股份有限公司 | Heat energy recovery system of slag of magnesium reducing furnace |
| CN102228774A (en) * | 2011-05-27 | 2011-11-02 | 中钢集团鞍山热能研究院有限公司 | Method and device for sensible heat reclaiming of blast furnace slag and desulfurization of sintering flue gas |
| CN101749688B (en) * | 2008-12-08 | 2013-05-08 | 北京中冶设备研究设计总院有限公司 | Steam recycle device for utilization and treatment of heat energy of blast furnace slag |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362279C (en) * | 2005-06-29 | 2008-01-16 | 桑洪忠 | Mixed heat recovering slag cooling machine |
| CN102537914B (en) * | 2011-12-16 | 2015-07-01 | 天津大学 | Method and device for carrying out dry quenching and recovering heat energy in radiation and conduction heat absorption mode |
| CN102605116B (en) * | 2012-04-09 | 2013-11-13 | 刘犇 | Blast furnace slag sensible heat recovery and generating method |
| CN104421920A (en) * | 2013-08-29 | 2015-03-18 | 宁夏鹏程致远自动化技术有限公司 | Metallic magnesium reducing slag waste heat utilization system |
| CN103672930B (en) * | 2013-12-16 | 2016-01-20 | 杨群峰 | A kind of slag cooler producing steam |
| CN106247346B (en) * | 2016-10-12 | 2018-09-28 | 桃江县博强再生资源有限公司 | One kind is for clinker recovery and processing system after consumer waste incineration |
-
1998
- 1998-10-29 CN CN 98123555 patent/CN1081312C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749688B (en) * | 2008-12-08 | 2013-05-08 | 北京中冶设备研究设计总院有限公司 | Steam recycle device for utilization and treatment of heat energy of blast furnace slag |
| CN101886881A (en) * | 2010-06-01 | 2010-11-17 | 鹤壁地恩地新材料科技有限公司 | New process for heat energy comprehensive utilization of magnesium slag in metal magnesium reduction furnace |
| CN102042767A (en) * | 2011-01-06 | 2011-05-04 | 宁夏华亿镁业股份有限公司 | Heat energy recovery system of slag of magnesium reducing furnace |
| CN102228774A (en) * | 2011-05-27 | 2011-11-02 | 中钢集团鞍山热能研究院有限公司 | Method and device for sensible heat reclaiming of blast furnace slag and desulfurization of sintering flue gas |
| CN102228774B (en) * | 2011-05-27 | 2013-07-24 | 中钢集团鞍山热能研究院有限公司 | Method and device for sensible heat reclaiming of blast furnace slag and desulfurization of sintering flue gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1216812A (en) | 1999-05-19 |
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