The method of work of the Heat-energy recovery system of high-temperature material of greenhouse gas emission can be reduced
The application is divisional application, the invention and created name of original application: Heat-energy recovery system of high-temperature material, application number:
201210158386.X, the applying date: 2012-5-21.
Technical field
The present invention relates to the technical field of high-temperature material heat recovery, specifically a kind of Heat-energy recovery system of high-temperature material.
Background technology
Phosphorus production is highly energy-consuming trade, often produces 1 ton of yellow phosphorus and at least to consume 1.4 ten thousand kilowatt hour electricity and 1.6 tons of carbon, and Chinese existing annual capacity is 800,000 tons.A large amount of high temperature furnace slag will be produced during phosphorus production.Equally, the industry such as steel-making, aluminium metallurgy, copper metallurgy, there is also a large amount of high temperature furnace slag.
Therefore, how to recycle the heat energy of high temperature furnace slag, to reduce the power consumption of resource production and the metallurgy industries etc. such as yellow phosphorus, so that greenhouse gas emission is greatly reduced accordingly, be China's urgent problem.
Additionally, Yellow Phosphorous Slag is the waste residue discharged during phosphorus production.It mainly comprises as CasiO3.Phosphorus slag is by apatite, quartz, coke in electric arc furnace, with the high melt of about 1600 DEG C, reacts and the waste residue discharged;Phosphorus slag the most gradually crystallisation by cooling is the bigger block of volume, and this block integral hardness, close to granite, is unfavorable for recycling.
How a kind of high-temperature materials such as phosphorus slag heat energy in cooling procedure that can more fully hereinafter utilize is provided, high-temperature material caking when cooling can be prevented again, and generate particulate material, in order to as particulate material for building, be that this area to solve the technical problem that.
Summary of the invention
The technical problem to be solved is to provide a kind of simple in construction, high-temperature material waste heat recovery rate is higher and can prevent high-temperature material Heat-energy recovery system of high-temperature material of caking when cooling.
For solving above-mentioned technical problem, the Heat-energy recovery system of high-temperature material that the present invention provides includes: cylinder, is provided with the transmission belt for described high-temperature material is delivered to discharging opening from the feeding mouth of this cylinder axially penetrating through this cylinder in this cylinder;The opening at described cylinder top is provided with heat exchanger;The feeding mouth of neighbouring described cylinder is provided with the cooling crushed aggregates device delivering in transmission belt after being granule by described high-temperature material cooled and solidified.Wherein, heat exchanger is used for high-temperature material waste heat recovery;Cooling crushed aggregates device, for cooled and solidified high-temperature material generate particulate material, prevents material caking when cooling, and after generating particulate material, the area of dissipation of material is significantly increased simultaneously, and beneficially the waste heat of material is fully, quickly discharge, and is beneficial to improve the response rate of heat energy.
As the scheme optimized, in described cylinder and being arranged over material scraping plate in described transmission belt, so that the material in described transmission belt is evenly distributed, beneficially the waste heat of material is fully, quickly discharge, and is beneficial to improve the response rate of heat energy.
As the scheme optimized further, the aperture distribution at described cylinder top has multiple, the heat exchanger tube for delivery heat transfer medium in heat exchanger on each opening is sequentially connected in series, the heat transferring medium of cold state is from the heat transferring medium entrance input of the heat exchanger of the discharging opening of neighbouring described cylinder, owing to the heat exchanger tube temperature in each heat exchanger on the flow direction of described heat transferring medium raises step by step, thus be suitable to make described heat transferring medium by stepped heating, and reach higher temperature;The heat transferring medium outlet of heat exchanger is used for connecting other heat transmission equipments, is used for producing hot water, hot-air or superheated steam etc..
As the scheme optimized, the air vent being used for discharging heat exchange air at each heat exchanger top is connected to circulating gas pipe, each circulating gas pipe is through the sidewall of described cylinder and extends in described cylinder and in the upper and lower layer of described transmission belt, is suitable to upwardly penetrate through described epipelagic zone and act on the cycling hot air-flow of described heat exchanger to be formed in cylinder;The gas outlet, bottom of each circulating gas pipe adjacent to the bottom surface of described epipelagic zone and is arranged upward.Use cycling hot airflow function in corresponding heat exchanger, it is to avoid the loss of hot-air, fill into cool exterior air heating simultaneously, further increase the response rate of heat energy.
Described cooling crushed aggregates device is double-roll crusher, particle roller including a pair adjacent, parallel setting, the inwall of this particle roller be provided with the axial distribution along this particle roller, for heating the spiral heat exchange tube of described heat transferring medium, this spiral heat exchange tube is the semi-circular tube that opening is welded on described particle roller inwall;Spiral heat exchange tube uses semi-circular tube to make, and makes the heat transferring medium in heat exchanger tube directly and the contact internal walls of particle roller, is beneficial to improve further conversion efficiency and the heat energy recovery rate of heat energy.
Further, described particle roller two ends central authorities are respectively equipped with into liquid, go out liquid hollow rotating shaft;This is respectively equipped with swivel to the external port of hollow rotating shaft a pair hollow rotating shaft that bearing fit is in pair of bearing and described respectively, is respectively used to connect the body inputting, exporting described heat transferring medium;The liquid outlet of described spiral heat exchange tube is connected with the inner port of described hollow rotating shaft, the liquid inlet of described spiral heat exchange tube in this particle roller and extend to neighbouring described in go out liquid hollow rotating shaft, so that the heat transferring medium in this particle roller newly entering enters described spiral heat exchange tube after preheating in this particle roller, heat further, and then the heat exchange stroke of prolongation heat transferring medium, improve heat exchange efficiency.
The external port of the described swivel that the side of a pair described particle roller is adjacent is connected, the heat exchange so that described heat transferring medium connect in this is to particle roller, to heat described heat transferring medium further, and the formation higher heat transferring medium of temperature.
Further, the liquid hollow rotating shaft that enters of the opposite side of a pair described particle roller is connected with the heat transferring medium outlet of the heat exchanger of the feeding mouth of neighbouring described cylinder through described swivel.Owing to the temperature on particle roller surface is higher, be suitable to heat the heat transferring medium exported from described heat exchanger further, form the higher heat transferring medium of temperature.
For improving the response rate of heat energy further, described cylinder is interior and is provided with multiple shifting board distributed alternately below described epipelagic zone, the upper and lower Relative distribution of heat exchanger described in the cavity and constituted between adjacent pair shifting board;The air of the air vent output at a described heat exchanger top is suitable to be delivered in the described cavity immediately below this heat exchanger by described circulating gas pipe.
Further, for preventing thermal current and material excessive, the feeding mouth of described cylinder and be provided with the striker plate tilted inside feeding mouth in the outside of described cooling crushed aggregates device.
Described high-temperature material is yellow phosphorus furnace slag;Block bigger in volume after piling up crystallisation by cooling due to traditional yellow phosphorus furnace slag, this block integral hardness is close to granite, use described cooling crushed aggregates device will to generate the particulate material (particle diameter of particulate material after the yellow phosphorus furnace slag cooled and solidified of high temperature state, particle, determined by the shape of roll surface projection of the double-roll crusher selected, density etc.), so that as particulate material for building, it is achieved that it recycles.
The discharging opening of cooling crushed aggregates device is 0.3-1m with the vertical dimension of described transmission belt, to realize air cooling in blanking operation, to generate particulate material, prevents yellow phosphorus furnace slag regelation in bulk.
The method of work of described Heat-energy recovery system of high-temperature material, including: described high-temperature material is sent into described cooling crushed aggregates device, and making described high-temperature material cooled and solidified is granule, then drops down onto in described transmission belt;The material of described graininess is sent in described cylinder by this transmission belt;After hot-air in cylinder is upward through each heat exchanger, discharge from the top of each heat exchanger, in described circulating gas pipe delivers to described cylinder and between the upper and lower layer band of described transmission belt, thus formed in cylinder and be suitable to upwardly penetrate through described epipelagic zone and act on the cycling hot air-flow of described heat exchanger;The heat transferring medium of cold state is from the heat transferring medium entrance input of the heat exchanger of the discharging opening of neighbouring described cylinder;Successively by heat exchange in the described heat transferring medium each heat exchanger 5 on its flow direction, and the temperature level of heat transferring medium raises;The material of the described graininess of cooling is exported by described transmission belt from the discharging opening of described cylinder.
As further preferred scheme, described heat exchanger is vertical pipe type heat exchanger, is provided with the spiral wind deflector being distributed up and down in this heat exchanger, and the vertical heat exchanging pipe in heat exchanger is interspersed on described spiral wind deflector.Spiral wind deflector is suitable to lengthen hot blast stroke in this heat exchanger, increases the time of contact of hot blast and heat exchanger tube, and then improves the response rate of heat energy further.
The present invention has positive effect relative to prior art: the Heat-energy recovery system of high-temperature material of the present invention, one side is effectively utilized the waste heat of yellow phosphorus furnace slag, and can significantly lower consumption energy, saves the energy and reduces the discharge of a large amount of greenhouse gases accordingly;On the other hand, yellow phosphorus furnace slag generating particulate material for building, it is achieved that the purpose turned waste into wealth, it is to avoid the generation of solid refuse, it has good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of Heat-energy recovery system of high-temperature material in embodiment 1;
Fig. 2 is the other end structural representation of the double-roll crusher in Fig. 1;
Fig. 3 is the surface structure schematic diagram of described double-roll crusher;
Fig. 4 is the cross-sectional view of the particle roller in described double-roll crusher;
Fig. 5 is the cross-sectional view of the particle roller in embodiment 2.
Detailed description of the invention
Embodiment 1
See Fig. 1 to 4, the Heat-energy recovery system of high-temperature material of the present embodiment, including: cylinder 1, the transmission belt 2 for described high-temperature material to be delivered to discharging opening from the feeding mouth of this cylinder 1 axially penetrating through this cylinder 1 it is provided with in this cylinder 1, the end of neighbouring described cylinder 1 is respectively equipped with the drive 3 coordinated with the transmission of described transmission belt 2, and the epipelagic zone subjacent of the transmission belt 2 in described cylinder 1 is distributed multiple carrying roller 17.
The top of described cylinder 1 is distributed multiple opening, the heat exchanger 5 that each opening is provided with, heat transferring medium conveying pipe in each heat exchanger 5 is sequentially connected in series, low-temperature heat exchange medium is from the heat transferring medium entrance input of the heat exchanger 5 of the discharging opening of neighbouring described cylinder 1, owing to the heat exchanger tube temperature in each heat exchanger 5 on the flow direction of described heat transferring medium raises step by step, thus be suitable to make described heat transferring medium by stepped heating, and reach higher temperature;Described heat transferring medium is conduction oil or water (preferably soft water).
The heat transferring medium outlet of heat exchanger 5 is used for connecting other heat transmission equipments, is used for producing hot water, hot-air or superheated steam etc..The feeding mouth of neighbouring described cylinder 1 is provided with the cooling crushed aggregates device delivering in transmission belt 2 after being granule by described high-temperature material cooled and solidified.
Heat exchanger 5 is for high-temperature material waste heat recovery;Cooling crushed aggregates device, for cooled and solidified high-temperature material generate particulate material, prevents material caking when cooling, and after generating particulate material, the area of dissipation of material is significantly increased simultaneously, and beneficially the waste heat of material is fully, quickly discharge, and is beneficial to improve the response rate of heat energy.
In described cylinder 1 and being arranged over material scraping plate 7 in transmission belt 2, so that the material in described transmission belt 2 is evenly distributed, beneficially the waste heat of material is fully, quickly discharge, and is beneficial to improve the response rate of heat energy.
The air vent being used for discharging heat exchange air at each heat exchanger 5 top is connected to circulating gas pipe 8, each circulating gas pipe 8, through the wall body of described cylinder 1 and extending to the upper and lower layer band of the described transmission belt 2 in described cylinder 1, is suitable to upwardly penetrate through the epipelagic zone of described transmission belt 2 and act on the cycling hot air-flow of described heat exchanger 5 to be formed in cylinder 1;The gas outlet, bottom of each circulating gas pipe 8 adjacent to the bottom surface of the epipelagic zone of described transmission belt 2 and is arranged upward.Use cycling hot airflow function in corresponding heat exchanger 5, it is to avoid the loss of hot-air, simultaneously without filling into cool exterior air, further increase the response rate of heat energy.
Described cooling crushed aggregates device is double-roll crusher, particle roller 6 including a pair adjacent, parallel setting, the inwall of this particle roller 6 be provided with the axial distribution along this particle roller, for heating the spiral heat exchange tube 11 of described heat transferring medium, this spiral heat exchange tube 11 is welded on the semi-circular tube on described particle roller inwall for opening;Spiral heat exchange tube 11 uses semi-circular tube to make, and makes the heat transferring medium in spiral heat exchange tube 11 directly and the contact internal walls of particle roller 6, is beneficial to improve further conversion efficiency and the heat energy recovery rate of heat energy.
Sending into this to the described heat transferring medium of particle roller 6 can be new cold heat transferring medium, it is also possible to be the hot heat transferring medium of heat exchanger 5 output of feeding mouth from neighbouring described cylinder 1;Can select accordingly according to the temperature requirement of the described heat transferring medium needed for outside.
As a kind of embodiment, the heat transferring medium entrance of the spiral heat exchange tube in one particle roller 6 is connected with the heat transferring medium outlet of the heat exchanger 5 of the feeding mouth of neighbouring described cylinder 1, owing to the temperature on particle roller 6 is higher, be suitable to heat the heat transferring medium from the output of described heat exchanger 5 further, form the higher heat transferring medium of temperature.
The inner port of the hollow rotating shaft 15 that the two ends of spiral heat exchange tube 11 are central with being fixed on these particle roller two ends respectively is connected, hollow rotating shaft 15 is distinguished bearing fit in pair of bearing 12 by this, and the external port of a pair described hollow rotating shaft is respectively equipped with swivel 13, it is respectively used to input, exports described heat transferring medium.
As preferential scheme, the external port of the described swivel 13 of the side abutting end of a pair described particle roller 6 is connected, so that this is connected with the heat transferring medium outlet of the heat exchanger 5 of the feeding mouth of neighbouring described cylinder 1 after connecting the spiral heat exchange tube 11 in particle roller 6, to heat described heat transferring medium further, form the higher heat transferring medium of temperature.
Due in heating process, described heat transferring medium part vaporization (when especially heat transferring medium is soft water), heat transferring medium outlet at heat exchanger 5 top of the feeding mouth of neighbouring described cylinder 1 is suitable to export steam, this steam is connected through the first check-valves and a drum 9, liquid heat transferring medium outlet bottom this heat exchanger 5 is connected with one end of the spiral heat exchange tube of described series connection, and the other end of the spiral heat exchange tube of described series connection is connected with described drum 9 through the second check-valves.Drum 9 is used for storing vapours or hot water or deep fat, for other equipment heat supplies.
Described cylinder 1 is interior and is provided with multiple shifting board 10 distributed alternately below the epipelagic zone of described transmission belt 2, each shifting board 10 is provided with the rectangular through-hole being suitable to make described underlying band walk, heat exchanger about 5 Relative distribution described in the cavity and constituted between adjacent pair shifting board 10;The air of the top vent output of a described heat exchanger 5 is suitable to be delivered in the described cavity below this heat exchanger 5 by described circulating gas pipe 8.
For preventing thermal current and material excessive, the feeding mouth of described cylinder 1 and be provided with the striker plate 4 tilted inside feeding mouth in the outside of described cooling crushed aggregates device.
Described high-temperature material is yellow phosphorus furnace slag;Block bigger in volume after piling up crystallisation by cooling due to traditional yellow phosphorus furnace slag, this block integral hardness is close to granite, after using described cooling crushed aggregates device to pulverize, is suitable to generate particulate material, in order to as particulate material for building, it is achieved that it recycles.
The discharging opening of cooling crushed aggregates device is 0.3-1m with the vertical dimension of described transmission belt 2, to realize air cooling in blanking operation, to generate particulate material, prevents yellow phosphorus furnace slag regelation in bulk.
Described cooling crushed aggregates device is double-roll crusher, including the particle roller 6 of a pair adjacent, parallel setting, is distributed protruding 14 on the roller wall of each particle roller 6;A pair particle roller 6 is suitable to rotate in opposite directions when working.
Another embodiment as cooling crushed aggregates device, described cooling crushed aggregates device is double-roll crusher, it includes the particle roller of a pair adjacent, parallel setting, this particle roller is jacket type roll body, and the heat transferring medium entrance of this jacket type roll body is connected with the heat transferring medium outlet of the heat exchanger 5 of the feeding mouth of neighbouring described cylinder 1.As the third embodiment of cooling crushed aggregates device, cooling crushed aggregates device also can use tumble mixer, and the rotating cylinder of this tumble mixer is jacket type, for heating described heat transferring medium.
The bottom of described heat exchanger 5 is horn-like, and in each circulating gas pipe 8, string is provided with the high pressure conveying gas blower 16 being in outside described cylinder 1.
Described heat exchanger 5 is vertical pipe type heat exchanger, is provided with the spiral wind deflector being distributed up and down in this heat exchanger 5, and the vertical heat exchanging pipe in heat exchanger 5 is interspersed on described spiral wind deflector.
Embodiment 2
On the basis of embodiment 1, the present embodiment has a following modification:
Described particle roller 6 two ends central authorities are respectively equipped with into liquid, go out liquid hollow rotating shaft;This is respectively equipped with swivel 13 to the external port of hollow rotating shaft a pair hollow rotating shaft that bearing fit is in pair of bearing 12 and described respectively, is respectively used to connect the body inputting, exporting described heat transferring medium;The liquid outlet of described spiral heat exchange tube 11 is connected with the inner port of described hollow rotating shaft, the liquid inlet of described spiral heat exchange tube 11 in this particle roller 6 and extend to neighbouring described in go out liquid hollow rotating shaft, so that the heat transferring medium in this particle roller 6 newly entering enters described spiral heat exchange tube 11 after preheating in this particle roller 6, heat further, and then the heat exchange stroke of prolongation heat transferring medium, improve heat exchange efficiency.
The external port of the described swivel that the side of a pair described particle roller 6 is adjacent is connected, the heat exchange so that described heat transferring medium connect in this is to particle roller, to heat described heat transferring medium further, and the formation higher heat transferring medium of temperature.
The liquid hollow rotating shaft that enters of the opposite side of a pair described particle roller is connected with the heat transferring medium outlet of the heat exchanger 5 of the feeding mouth of neighbouring described cylinder 1 through described swivel.Owing to the temperature on particle roller surface is higher, be suitable to heat the heat transferring medium exported from described heat exchanger further, form the higher heat transferring medium of temperature.
Embodiment 3
On the basis of embodiment 1 and 2, the present embodiment has a following modification:
A pair described particle roller 6 enters the particle roller 6 described in embodiment 2 after being respectively adopted the particle roller 6 in embodiment 1 and 2, and described spiral heat exchange tube 11 output that described heat transferring medium is from the particle roller 6 described in embodiment 1.
Embodiment 4
The method of work of described Heat-energy recovery system of high-temperature material, including: described high-temperature material is sent into described cooling crushed aggregates device, and making described high-temperature material cooled and solidified is granule, then drops down onto in described transmission belt 2;The material of described graininess is sent in described cylinder 1 by this transmission belt 2;After hot-air in cylinder 1 is upward through each heat exchanger 5, discharge from the top of each heat exchanger 5, in described circulating gas pipe 8 delivers to described cylinder 1 and between the upper and lower layer band of described transmission belt 2, thus formed in cylinder 1 and be suitable to upwardly penetrate through described epipelagic zone and act on the cycling hot air-flow of described heat exchanger 5;The heat transferring medium of cold state is from the heat transferring medium entrance input of the heat exchanger 5 of the discharging opening of neighbouring described cylinder 1;Successively by heat exchange in the described heat transferring medium each heat exchanger 5 on its flow direction, and the temperature level of heat transferring medium raises;The material of the described graininess of cooling is exported by described transmission belt 2 from the discharging opening of described cylinder 1.