The method of work of Heat-energy recovery system of high-temperature material
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, and often produce 1 ton of yellow phosphorus and at least will consume 1.4 ten thousand kilowatt hour electricity and 1.6 tons of carbon, Chinese existing annual capacity is 800,000 tons.A large amount of high temperature furnace slag will be produced in phosphorus production process.Equally, also there is a large amount of high temperature furnace slag in the industries such as steel-making, aluminium metallurgy, copper metallurgy.
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, significantly reducing greenhouse gas emission with corresponding, is China's urgent problem.
In addition, Yellow Phosphorous Slag is the waste residue of discharging in phosphorus production process.It mainly consists of CasiO
3.Phosphorus slag is by apatite, quartz, coke in electric arc furnaces, with the high melt of about 1600 DEG C, reacts and the waste residue of discharging; Phosphorus slag in atmosphere gradually crystallisation by cooling be the larger block of volume, this block integral hardness close to granite, be unfavorable for recycle.
How to provide a kind of and can utilize the heat energy of the high-temperature materials such as phosphorus slag in cooling procedure more fully, can prevent again high-temperature material caking when cooling, and generate particulate material, so that as particulate material for building, be the technical problem that this area will solve.
Summary of the invention
Technical problem to be solved by this invention is to provide that a kind of structure is simple, high-temperature material waste heat recovery rate is higher and can prevents the Heat-energy recovery system of high-temperature material of high-temperature material caking when cooling.
For solving the problems of the technologies described above, Heat-energy recovery system of high-temperature material provided by the invention comprises: cylindrical shell, is provided with the transport tape for described high-temperature material to be delivered to discharging opening from the feeding mouth of this cylindrical shell axially running through this cylindrical shell in this cylindrical shell; The opening at described cylindrical shell top is provided with heat exchanger; The feeding mouth of contiguous described cylindrical shell is provided with the cooling crushed aggregates device delivered to after being particle by described high-temperature material cooled and solidified on transport tape.Wherein, heat exchanger is used for high-temperature material waste heat recovery; Cooling crushed aggregates device is used for cooled and solidified high-temperature material and generates particulate material, and prevent material caking when cooling, after generating particulate material, the area of dissipation of material significantly increases simultaneously, and the waste heat being beneficial to material fully, fast discharges, and is beneficial to the rate of recovery improving heat energy.
As the scheme optimized, above described transport tape, be provided with material scraping plate in described cylindrical shell, to make the material on described transport tape be evenly distributed, the waste heat being beneficial to material fully, fast discharges, be beneficial to the rate of recovery improving heat energy.
As the scheme optimized further, the aperture distribution at described cylindrical shell top has multiple, the heat exchanger tube for delivery heat transfer medium in heat exchanger on each opening is connected successively, the heat transferring medium of cold state inputs from the heat transferring medium entrance of the heat exchanger of the discharging opening of contiguous described cylindrical shell, because 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 for making described heat transferring medium by stepped heating, and reach higher temperature; The heat transferring medium of heat exchanger exports for connecting other heat transmission equipments, for the production of hot water, hot-air or superheated steam etc.
As the scheme optimized, each heat exchanger top be connected to circulating gas pipe for the exhaust outlet of discharging heat exchange air, each circulating gas pipe through described cylindrical shell sidewall and to extend in described cylindrical shell and in the upper and lower layer of described transport tape, be suitable for upwards penetrating described epipelagic zone to be formed in cylindrical shell and act on the cycling hot air-flow of described heat exchanger; The bottom surface of the contiguous described epipelagic zone in gas outlet, bottom of each circulating gas pipe is also arranged upward.Adopt cycling hot airflow function in corresponding heat exchanger, avoid the loss of hot-air, fill into cool exterior air heating simultaneously, further increase the rate of recovery of heat energy.
Described cooling crushed aggregates device is double-roll crusher, comprise the particle roller of a pair adjacent, parallel setting, the inwall of this particle roller be provided with along this particle roller axial distribution, 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 adopts semi-circular tube to make, make heat transferring medium in heat exchanger tube directly with the contact internal walls of particle roller, be beneficial to conversion efficiency and the heat energy recovery rate of raising heat energy further.
Further, described particle roller two ends central authorities are respectively equipped with into liquid, fluid hollow rotating shaft; This distinguishes bearing fit in pair of bearing to hollow rotating shaft, and the external port of a pair described hollow rotating shaft is respectively equipped with swivel, is respectively used to the body connecting input, export described heat transferring medium; The outlet end 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 is in this particle roller and extend to contiguous described fluid hollow rotating shaft, in this particle roller, described spiral heat exchange tube is entered after preheating to make the heat transferring medium newly entered in this particle roller, heat further, and then extend the heat exchange stroke of 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, to make described heat transferring medium connect in this is to particle roller heat exchange, to heat described heat transferring medium further, and the heat transferring medium that formation temperature is higher.
Further, the liquid hollow rotating shaft that enters of the opposite side of a pair described particle roller to export with the heat transferring medium of the heat exchanger of the feeding mouth of contiguous described cylindrical shell through described swivel and is connected.Because the temperature on particle roller surface is higher, be suitable for heating the heat transferring medium exported from described heat exchanger further, the heat transferring medium that formation temperature is higher.
For improving the rate of recovery of heat energy further, below described epipelagic zone, be provided with multiple shifting board distributed alternately, the upper and lower Relative distribution of heat exchanger described in the cavity and formed between a pair adjacent shifting board in described cylindrical shell; The air that the exhaust outlet at a described heat exchanger top exports is suitable for being delivered in the described cavity immediately below this heat exchanger by described circulating gas pipe.
Further, for prevent thermal current and material excessive, the feeding mouth of described cylindrical shell 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; Because traditional yellow phosphorus furnace slag piles up block larger in volume after crystallisation by cooling, this block integral hardness is close to granite, described cooling crushed aggregates device is adopted to generate the particulate material (particle diameter of particulate material by after the yellow phosphorus furnace slag cooled and solidified of high temperature state, particle, the decision such as shape, density by the roll surface projection of the double-roll crusher selected), so that as particulate material for building, achieve it and recycle.
The cooling discharging opening of crushed aggregates device and the vertical range of described transport tape are 0.3-1m, to realize Air flow in blanking operation, to generate particulate material, prevent yellow phosphorus furnace slag regelation from becoming block.
The method of work of described Heat-energy recovery system of high-temperature material, comprising: described high-temperature material is sent into described cooling crushed aggregates device, makes described high-temperature material cooled and solidified be particle, then drops down onto on described transport tape; The material of described graininess is sent in described cylindrical shell by this transport tape; After hot-air in cylindrical shell is upward through each heat exchanger, discharge from the top of each heat exchanger, to deliver in described cylindrical shell and between the upper and lower layer band of described transport tape through described circulating gas pipe, thus formed in cylindrical shell and be suitable for upwards penetrating described epipelagic zone and act on the cycling hot air-flow of described heat exchanger; The heat transferring medium of cold state inputs from the heat transferring medium entrance of the heat exchanger of the discharging opening of contiguous described cylindrical shell; Successively by heat exchange in each heat exchanger 5 of described heat transferring medium on its flow direction, and the temperature level of heat transferring medium raises; The material of the described graininess of cooling exports from the discharging opening of described cylindrical shell by described transport tape.
As further preferred scheme, described heat exchanger is vertical pipe type heat exchanger, is provided with the spiral wind deflector distributed up and down in this heat exchanger, and the vertical heat exchanging pipe in heat exchanger interts on described spiral wind deflector.Spiral wind deflector is suitable for lengthening the stroke of hot blast in this heat exchanger, increases the time of contact of hot blast and heat exchanger tube, and then improves the rate of recovery of heat energy further.
The present invention has positive effect relative to prior art: Heat-energy recovery system of high-temperature material of the present invention, effectively make use of on the one hand the waste heat of yellow phosphorus furnace slag, can significantly lower consumption can, economize energy the discharge of a large amount of greenhouse gases of corresponding minimizing; On the other hand, yellow phosphorus furnace slag is generated particulate material for building, achieve the object turned waste into wealth, 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, comprise: cylindrical shell 1, the transport tape 2 for described high-temperature material to be delivered to discharging opening from the feeding mouth of this cylindrical shell 1 axially running through this cylindrical shell 1 is provided with in this cylindrical shell 1, the end of contiguous described cylindrical shell 1 is respectively equipped with the drive 3 coordinated with the transmission of described transport tape 2, and the epipelagic zone subjacent of the transport tape 2 in described cylindrical shell 1 is distributed with multiple carrying roller 17.
The top portion of described cylindrical shell 1 is furnished with multiple opening, the heat exchanger 5 that each opening is provided with, heat transferring medium carrier pipe in each heat exchanger 5 is connected successively, low-temperature heat exchange medium is from the heat transferring medium entrance input of the heat exchanger 5 of the discharging opening of contiguous described cylindrical shell 1, because 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 for making described heat transferring medium by stepped heating, and reach higher temperature; Described heat transferring medium is conduction oil or water (preferred soft water).
The heat transferring medium of heat exchanger 5 exports for connecting other heat transmission equipments, for the production of hot water, hot-air or superheated steam etc.The feeding mouth of contiguous described cylindrical shell 1 is provided with for by described high-temperature material cooled and solidified being the cooling crushed aggregates device delivered to after particle on transport tape 2.
Heat exchanger 5 is for high-temperature material waste heat recovery; Cooling crushed aggregates device is used for cooled and solidified high-temperature material and generates particulate material, and prevent material caking when cooling, after generating particulate material, the area of dissipation of material significantly increases simultaneously, and the waste heat being beneficial to material fully, fast discharges, and is beneficial to the rate of recovery improving heat energy.
Above transport tape 2, be provided with material scraping plate 7 in described cylindrical shell 1, to make the material on described transport tape 2 be evenly distributed, the waste heat being beneficial to material fully, fast discharges, be beneficial to the rate of recovery improving heat energy.
Each heat exchanger 5 top be connected to circulating gas pipe 8 for the exhaust outlet of discharging heat exchange air, each circulating gas pipe 8 through described cylindrical shell 1 wall body and the upper and lower layer band extending to the described transport tape 2 in described cylindrical shell 1, to form the epipelagic zone the cycling hot air-flow acting on described heat exchanger 5 that are suitable for upwards penetrating described transport tape 2 in cylindrical shell 1; The bottom surface of the epipelagic zone of the contiguous described transport tape 2 in gas outlet, bottom of each circulating gas pipe 8 is also arranged upward.Adopting cycling hot airflow function in corresponding heat exchanger 5, avoid the loss of hot-air, simultaneously without the need to filling into cool exterior air, further increasing the rate of recovery of heat energy.
Described cooling crushed aggregates device is double-roll crusher, comprise the particle roller 6 of a pair adjacent, parallel setting, the inwall of this particle roller 6 be provided with along this particle roller axial distribution, for heating the spiral heat exchange tube 11 of described heat transferring medium, this spiral heat exchange tube 11 is the semi-circular tube on opening is welded on described particle roller inwall; Spiral heat exchange tube 11 adopts semi-circular tube to make, make heat transferring medium in spiral heat exchange tube 11 directly with the contact internal walls of particle roller 6, be beneficial to conversion efficiency and the heat energy recovery rate of raising heat energy further.
Sending into this to the described heat transferring medium of particle roller 6 can be new cold heat transferring medium, also can be the hot heat transferring medium exported from the heat exchanger 5 of the feeding mouth of contiguous described cylindrical shell 1; The temperature requirement of described heat transferring medium needed for outside can carry out corresponding selection.
As a kind of embodiment, the heat transferring medium entrance of the spiral heat exchange tube in one particle roller 6 exports with the heat transferring medium of the heat exchanger 5 of the feeding mouth of contiguous described cylindrical shell 1 and is connected, because the temperature on particle roller 6 is higher, be suitable for the heat transferring medium that heating further exports from described heat exchanger 5, the heat transferring medium that formation temperature is higher.
The two ends of spiral heat exchange tube 11 are connected with the inner port of the hollow rotating shaft 15 being fixed on these particle roller two ends central authorities respectively, this distinguishes bearing fit in pair of bearing 12 to hollow rotating shaft 15, and the external port of a pair described hollow rotating shaft is respectively equipped with swivel 13, 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, export with the heat transferring medium of the heat exchanger 5 of the feeding mouth of contiguous described cylindrical shell 1 after spiral heat exchange tube 11 in particle roller 6 being connected to make this and be connected, to heat described heat transferring medium further, the heat transferring medium that formation temperature is higher.
Due in heating process, described heat transferring medium components vaporize (when especially heat transferring medium is soft water), be suitable for exporting steam in the heat transferring medium outlet at heat exchanger 5 top of the feeding mouth of contiguous described cylindrical shell 1, this steam is connected with a drum 9 through the first check-valves, 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 for storing vapours or hot water or deep fat, for other equipment heat supplies.
Multiple shifting board 10 distributed alternately is provided with in described cylindrical shell 1 below the epipelagic zone of described transport tape 2, each shifting board 10 is provided with the rectangular through-hole being suitable for described underlying band is walked, heat exchanger about 5 Relative distribution described in the cavity and formed between adjacent a pair shifting board 10; The air that the top vent of a described heat exchanger 5 exports is suitable for being delivered in the described cavity below this heat exchanger 5 by described circulating gas pipe 8.
For prevent thermal current and material excessive, the feeding mouth of described cylindrical shell 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; Because traditional yellow phosphorus furnace slag piles up block larger in volume after crystallisation by cooling, this block integral hardness, close to granite, after adopting described cooling crushed aggregates device to pulverize, is suitable for generating particulate material, so that as particulate material for building, achieve it and recycle.
The cooling discharging opening of crushed aggregates device and the vertical range of described transport tape 2 are 0.3-1m, to realize Air flow in blanking operation, to generate particulate material, prevent yellow phosphorus furnace slag regelation from becoming block.
Described cooling crushed aggregates device is double-roll crusher, comprises the particle roller 6 of a pair adjacent, parallel setting, the roller wall of each particle roller 6 is distributed with protruding 14; A pair particle roller 6 is suitable for rotating in opposite directions when working.
As the another embodiment of cooling crushed aggregates device, described cooling crushed aggregates device is double-roll crusher, it comprises 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 exports with the heat transferring medium of the heat exchanger 5 of the feeding mouth of contiguous described cylindrical shell 1 and is connected.As the third embodiment of cooling crushed aggregates device, cooling crushed aggregates device also can adopt 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 be in outside described cylindrical shell 1.
Described heat exchanger 5 is vertical pipe type heat exchanger, is provided with the spiral wind deflector distributed up and down in this heat exchanger 5, and the vertical heat exchanging pipe in heat exchanger 5 interts on described spiral wind deflector.
Embodiment 2
On the basis of embodiment 1, the present embodiment has following modification:
Described particle roller 6 two ends central authorities are respectively equipped with into liquid, fluid hollow rotating shaft; This distinguishes bearing fit in pair of bearing 12 to hollow rotating shaft, and the external port of a pair described hollow rotating shaft is respectively equipped with swivel 13, is respectively used to the body connecting input, export described heat transferring medium; The outlet end 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 is in this particle roller 6 and extend to contiguous described fluid hollow rotating shaft, in this particle roller 6, described spiral heat exchange tube 11 is entered after preheating to make the heat transferring medium newly entered in this particle roller 6, heat further, and then extend the heat exchange stroke of 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, to make described heat transferring medium connect in this is to particle roller heat exchange, to heat described heat transferring medium further, and the heat transferring medium that formation temperature is higher.
The liquid hollow rotating shaft that enters of the opposite side of a pair described particle roller to export with the heat transferring medium of the heat exchanger 5 of the feeding mouth of contiguous described cylindrical shell 1 through described swivel and is connected.Because the temperature on particle roller surface is higher, be suitable for heating the heat transferring medium exported from described heat exchanger further, the heat transferring medium that formation temperature is higher.
Embodiment 3
On the basis of embodiment 1 and 2, the present embodiment has following modification:
A pair described particle roller 6 adopts the particle roller 6 in embodiment 1 and 2 respectively, and described heat transferring medium enters the particle roller 6 described in embodiment 2 after described spiral heat exchange tube 11 output the particle roller 6 described in embodiment 1.
Embodiment 4
The method of work of described Heat-energy recovery system of high-temperature material, comprising: described high-temperature material is sent into described cooling crushed aggregates device, makes described high-temperature material cooled and solidified be particle, then drops down onto on described transport tape 2; The material of described graininess is sent in described cylindrical shell 1 by this transport tape 2; After hot-air in cylindrical shell 1 is upward through each heat exchanger 5, discharge from the top of each heat exchanger 5, to deliver in described cylindrical shell 1 and between the upper and lower layer band of described transport tape 2 through described circulating gas pipe 8, thus formed in cylindrical shell 1 and be suitable for upwards penetrating described epipelagic zone and act on the cycling hot air-flow of described heat exchanger 5; The heat transferring medium of cold state inputs from the heat transferring medium entrance of the heat exchanger 5 of the discharging opening of contiguous described cylindrical shell 1; Successively by heat exchange in each heat exchanger 5 of described heat transferring medium on its flow direction, and the temperature level of heat transferring medium raises; The material of the described graininess of cooling exports from the discharging opening of described cylindrical shell 1 by described transport tape 2.