CN209910360U - Coal slime drying flue gas heat-taking device - Google Patents
Coal slime drying flue gas heat-taking device Download PDFInfo
- Publication number
- CN209910360U CN209910360U CN201822208627.2U CN201822208627U CN209910360U CN 209910360 U CN209910360 U CN 209910360U CN 201822208627 U CN201822208627 U CN 201822208627U CN 209910360 U CN209910360 U CN 209910360U
- Authority
- CN
- China
- Prior art keywords
- heat
- flue gas
- unit
- coal slime
- heat transfer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a coal slime stoving flue gas gets heat facility, it is including advancing cigarette unit, heat transfer unit, inertial separation unit and water collection unit, advance cigarette unit and heat transfer unit intercommunication, heat transfer unit and inertial separation unit intercommunication, water collection unit set up in inertial separation unit's bottom, the flue gas flows through in proper order and advances cigarette unit, heat transfer unit and inertial separation unit, second grade heat transfer medium flow through heat transfer unit with the heat exchange takes place for the flue gas, heat transfer unit includes the heat exchanger and is used for wasing the spray set of heat exchanger surface. Its purpose is in order to provide a coal slime stoving flue gas heat extraction device, and the device can not take place to block up in the use.
Description
Technical Field
The utility model relates to a get hot device, especially relate to a get hot device that is used for coal slime stoving flue gas.
Background
A large amount of coal slime can be generated in the coal preparation process of a coal preparation plant of a coal mine, and the coal slime needs to be dried for recycling, and the main process is as follows:
high-temperature flue gas generated by the coal-fired hot blast stove enters the drying roller, coal slime enters the roller through the feeding belt conveyor, the high-temperature flue gas is fully contacted with wet coal slime in the roller, water in the coal slime is taken away by means of heat of the flue gas, the aim of drying the coal slime is achieved, the coal slime is discharged through the discharging belt after being dried, the flue gas enters the cyclone dust collector, the flue gas enters the desulfurizing device after being dedusted, the temperature of the flue gas is reduced to 45-50 ℃, and the relative humidity is 100%. The amount of smoke discharged from different drying devices varies, but is usually greater than 30m3And/s, so a large amount of heat is contained.
Because the flue gas that the coal slime was dried contains a large amount of coal dusts, the flue gas heat extraction device blocks up easily, and this is the technical bottleneck that hinders present coal slime stoving waste heat utilization.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a coal slime stoving flue gas heat transfer device, the device can not take place to block up in the use.
The utility model discloses coal slime stoving flue gas gets hot device, wherein the flue gas gets hot device is including advancing cigarette unit, heat transfer unit, inertial separation unit and water collection unit, advance cigarette unit and heat transfer unit intercommunication, heat transfer unit and inertial separation unit intercommunication, water collection unit set up in inertial separation unit's bottom, the flue gas flows through in proper order and advances cigarette unit, heat transfer unit and inertial separation unit, second grade heat transfer medium flow through heat transfer unit with the heat exchange takes place for the flue gas, heat transfer unit includes the heat exchanger and is used for wasing the spray set of heat exchanger surface.
The utility model discloses coal slime stoving flue gas gets hot device, wherein advance the cigarette unit and include interconnect's advance cigarette interface and diffusion mouth, diffusion mouth and heat transfer unit connection.
The utility model discloses coal slime stoving flue gas gets hot device, wherein heat transfer unit includes the support frame, heat exchanger and spray set install in on the support frame.
The utility model discloses coal slime stoving flue gas gets hot device, wherein the heat exchanger is finned tube heat exchanger, finned tube heat exchanger's pipeline adopts the coiled pipe, the fin adopts the plate fin.
The utility model discloses coal slime stoving flue gas heat extraction device, wherein all be provided with the hydrophilicity anticorrosive coating on finned tube heat exchanger's pipeline and fin.
The utility model discloses coal slime stoving flue gas gets hot device, wherein inertial separation unit includes the inertial separation room, be equipped with air outlet and access door on the inertial separation room.
The utility model discloses coal slime stoving flue gas heat extraction device, wherein the unit that catchments includes the ponding dish, be equipped with the outlet on the ponding dish.
The utility model discloses coal slime stoving flue gas heat transfer device lies in with prior art difference the utility model provides a heat transfer unit includes heat exchanger and spray set, and it has heat transfer medium to flow through in the heat exchanger, and the flue gas takes place the heat exchange with the heat transfer medium in the heat exchanger when flowing through the surface of heat exchanger, because contains the buggy in the flue gas, after the buggy gathering is at the heat exchanger surface, washs the surface of heat exchanger through spray set, can not take place blocking phenomenon.
The present invention will be further explained with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a gradient depth recycling system for waste heat of coal slime drying flue gas, in which the coal slime drying flue gas heat-taking device of the present invention is applied;
FIG. 2 is a schematic structural view of the coal slime drying flue gas heat-extraction device of the present invention;
FIG. 3 is a view taken along the line A in FIG. 2;
FIG. 4 is the view of FIG. 3 with the smoke intake unit removed;
FIG. 5 is a heat exchange schematic diagram of a secondary heat exchange medium and a heat pump unit in the coal slime drying flue gas waste heat step depth recycling system.
Detailed Description
As shown in figure 1, the coal slime drying flue gas waste heat gradient depth recycling system comprises a first-stage heat extraction device and a second-stage heat extraction device, the primary heat taking device comprises a flue gas heat pipe exchanger 1, a primary circulating pipeline 2 and a primary heat user, the flue gas heat pipe exchanger 1 is communicated with a primary heat user through a primary circulating pipeline 2, a primary heat exchange medium flows through the flue gas heat pipe exchanger 1 and the primary circulating pipeline 2, the second-stage heat-taking device comprises a coal slime drying flue gas heat-taking device 3, a second-stage circulation pipeline 4 and a second-stage heat user, the coal slime drying flue gas heat-taking device 3 is communicated with a secondary heat user through a secondary circulating pipeline 4, a secondary heat exchange medium flows through the coal slime drying flue gas heat-taking device 3 and the secondary circulating pipeline 4, the flue gas flows through the flue gas heat pipe exchanger 1 and the coal slime drying flue gas heat-taking device 3 in sequence to exchange heat.
As shown in fig. 1, the coal slime drying flue gas enters a chimney 6 after passing through a desulfurizing tower 5, a flue gas pipeline 7 is connected to the chimney 6, and the flue gas pipeline 7 is sequentially communicated with a flue gas heat pipe exchanger 1 and a coal slime drying flue gas heat extraction device 3. After the flue gas flows through the flue gas heat pipe exchanger 1, the temperature of the flue gas is reduced to 30 ℃ from 50 ℃ through heat exchange with a primary heat exchange medium, the primary heat exchange medium is water, the temperature of the water at 30 ℃ is increased to 40 ℃ through heat exchange, hot water at 40 ℃ meets the requirement of wellhead anti-freezing heat supply, and wellhead anti-freezing is a primary heat user. After the flue gas flows through the coal slime drying flue gas heat-taking device 3, the temperature of the flue gas is further reduced to 10 ℃ from 30 ℃ through heat exchange with a second-stage heat exchange medium, the second-stage heat exchange medium is also water, and the second-stage heat exchange medium is changed into hot water of 50-60 ℃ after heat exchange, so that heat supply of building heating and bathing hot water can be met, and the requirement of well mouth anti-freezing heat supply can be met. One or more of building heating, bathing hot water heating and wellhead anti-freezing are secondary heat users.
The utility model discloses be provided with heat pump set 8 between coal slime stoving flue gas heat removal device 3 and the second grade heat consumer, second grade circulation pipeline 4 includes first subcircuit way and second subcircuit way, first subcircuit way connection is between coal slime stoving flue gas heat removal device 3 and heat pump set 8, second subcircuit way connection is between heat pump set 8 and the second grade heat consumer.
As shown in fig. 5, the heat pump unit 8 includes a compressor 9, a condenser 10, an expansion valve 11 and an evaporator 12, a secondary heat exchange medium in the first sub-circulation pipeline absorbs heat through the coal slurry drying flue gas heat extraction device 3, and then releases heat through the evaporator 12, a refrigerant in the evaporator 12 absorbs heat and then enters the condenser 10 through the compressor 9, the refrigerant exchanges heat with the secondary heat exchange medium in the second sub-circulation pipeline in the condenser 10, and the temperature of the secondary heat exchange medium in the second sub-circulation pipeline rises to 50-60 ℃ hot water after passing through the condenser 10, which can meet the heat demand of a secondary heat user.
A heat storage device 13 is mounted on the second recirculation line. In order to solve the problems that the coal slime needs to be stopped for 2-3 hours every day and heat supply is discontinuous in the drying process, a heat storage device 13 is adopted in the system to store the redundant heat at ordinary times and is used for meeting or relieving the heat supply requirement in the stopping time period. The heat storage device is the prior art, and the principle is as follows: the heat storage water tank is adopted, redundant heat is stored in water to form a certain amount of hot water, and after the coal slime drying is stopped, the hot water in the water tank can be adopted to continue heat supply.
And the first-stage circulating pipeline 2, the first sub-circulating pipeline and the second sub-circulating pipeline are all provided with circulating pumps 14.
As shown in fig. 2 to combine fig. 3, 4, the utility model discloses coal slime stoving flue gas heat extraction device 3 is including advancing cigarette unit, heat transfer unit, inertial separation unit and water collection unit, advance cigarette unit and heat transfer unit intercommunication, heat transfer unit and inertial separation unit intercommunication, water collection unit set up in inertial separation unit's bottom, the flue gas flows through in proper order and advances cigarette unit, heat transfer unit and inertial separation unit, second grade heat transfer medium flow through heat transfer unit with heat exchange takes place for the flue gas, heat transfer unit includes heat exchanger 19 and is used for wasing spray set 18 of 19 surfaces of heat exchanger.
The smoke inlet unit comprises a smoke inlet interface 15 and a diffusion port 16 which are connected with each other, and the diffusion port 16 is connected with the heat exchange unit.
The heat exchange unit comprises a support frame 17, and the heat exchanger 19 and the spraying device 18 are installed on the support frame 17.
The heat exchanger 19 is a finned tube heat exchanger, the pipeline of the finned tube heat exchanger adopts a coiled tube, and the fins adopt flat-plate fins.
The pipeline and the fins of the finned tube heat exchanger are both provided with hydrophilic anticorrosive coatings, and the hydrophilic anticorrosive coatings are usually arranged in a spraying mode so as to prevent the problem of low-temperature corrosion caused by the fact that the temperature of flue gas is reduced to be below an acid dew point. The hydrophilic anticorrosive coating can not only prevent corrosion, but also prevent dust from gathering and is easy to clean.
The inertia separation unit comprises an inertia separation chamber 20, an air outlet and an access door 21 are arranged on the inertia separation chamber 20, the water collection unit comprises a water collection disc 22, and a water outlet 23 is arranged on the water collection disc 22.
In the coal slime drying flue gas heating device, the main function of the flue gas inlet unit is to connect the flue gas pipeline 7 and to make the flue gas enter and then diffuse at a reduced speed, so that the flue gas is uniformly distributed on the cross section when entering the heat exchange unit; the finned tube heat exchanger of the heat exchange unit is used for replacing the heat of the flue gas to a secondary heat exchange medium; the spraying device 18 is used for cleaning the heat exchange tube and the fins after the finned tube heat exchanger is dirty; the inertia separation unit is used for separating the flue gas from the condensed water, so that the amount of the condensed water carried out of the heat taking device by the flue gas is reduced; the water collecting unit is used for collecting condensed water and spray water, and is externally connected with a drain pipe through the water outlet 23 and then is intensively discharged.
In the coal slime drying flue gas waste heat gradient deep recycling system, the temperature of flue gas is reduced from 50 ℃ to 30 ℃ through heat exchange by a primary heat taking device, and a primary heat exchange medium is used for a primary heat user after being heated; the secondary heat taking device reduces the temperature of the flue gas from 30 ℃ to 10 ℃ through heat exchange, and the secondary heat exchange medium is used for a secondary heat user after being heated. Through the two stages of heat extraction in sequence, the step heat extraction is formed, the deep recycling of the coal slime drying flue gas waste heat is realized, the exhaust gas temperature is finally about 10 ℃, the flue gas waste heat is recovered to the maximum extent, the energy utilization rate is greatly improved, and the water vapor discharged into the air by the flue gas is reduced.
The coal slime drying flue gas waste heat step depth recycling system has the following advantages: 1) the coal slime drying flue gas waste heat is recycled for the first time in China; 2) according to different distribution intervals of the flue gas temperature, the flue gas heat pipe heat exchanger 1 is adopted for direct heat exchange and the heat pump technology is adopted for recycling, and according to different prepared heat source temperatures, heat using requirements of different heat supplying objects are met, the system configuration is optimal, the energy consumption is lowest, and the coal slime drying flue gas waste heat is recycled to the maximum degree with the minimum energy consumption.
The utility model has the advantages as follows:
1) the utility model provides a low temperature flue gas recycle in-process jam and the difficult problem of corruption, the low temperature flue gas waste heat of having retrieved the coal slime stoving of novelty.
2) The utility model adopts the integrated design of the coal slime drying flue gas heat-taking device 3, has compact structure and simple and convenient installation, and solves the problem of blockage of the heat-taking device caused by containing a large amount of coal slime in the flue gas through the built-in spray device 18 and the interval automatic washing of the heat-taking device heat exchanger fins; the surface of the finned tube heat exchanger of the heat exchange unit is sprayed with the hydrophilic anticorrosive coating, so that the problem of low-temperature corrosion caused by the fact that the temperature of flue gas is reduced to be lower than an acid dew point is solved.
3) The inertia separation unit is designed, so that the flue gas and the condensed water are separated in time, the water quantity of the flue gas brought out of the heat taking device is reduced, and the spray water and the condensed water are collected in a centralized manner to the maximum extent.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (7)
1. The utility model provides a coal slime stoving flue gas gets heat facility which characterized in that: including advancing cigarette unit, heat transfer unit, inertia separation unit and water collection unit, advance cigarette unit and heat transfer unit intercommunication, heat transfer unit and inertia separation unit intercommunication, water collection unit set up in inertia separation unit's bottom, the flue gas flows through in proper order and advances cigarette unit, heat transfer unit and inertia separation unit, second grade heat transfer medium flow through heat transfer unit with heat exchange takes place for the flue gas, heat transfer unit includes the heat exchanger and is used for wasing the spray set of heat exchanger surface.
2. The coal slime drying flue gas heat-extraction device of claim 1, characterized in that: the smoke inlet unit comprises a smoke inlet interface and a diffusion port which are connected with each other, and the diffusion port is connected with the heat exchange unit.
3. The coal slime drying flue gas heat-extraction device as claimed in claim 1 or 2, which is characterized in that: the heat exchange unit comprises a support frame, and the heat exchanger and the spraying device are installed on the support frame.
4. The coal slime drying flue gas heat-extraction device of claim 3, characterized in that: the heat exchanger is a finned tube heat exchanger, a coil tube is adopted as a pipeline of the finned tube heat exchanger, and a flat plate type fin is adopted as the fin.
5. The coal slime drying flue gas heat-extraction device of claim 4, characterized in that: and hydrophilic anticorrosive layers are arranged on the pipelines and the fins of the finned tube heat exchanger.
6. The coal slime drying flue gas heat-extraction device of claim 5, characterized in that: the inertia separation unit comprises an inertia separation chamber, and an air outlet and an access door are arranged on the inertia separation chamber.
7. The coal slime drying flue gas heat-extraction device of claim 6, characterized in that: the water collecting unit comprises a water collecting disc, and a water outlet is formed in the water collecting disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208627.2U CN209910360U (en) | 2018-12-27 | 2018-12-27 | Coal slime drying flue gas heat-taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208627.2U CN209910360U (en) | 2018-12-27 | 2018-12-27 | Coal slime drying flue gas heat-taking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209910360U true CN209910360U (en) | 2020-01-07 |
Family
ID=69025419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822208627.2U Active CN209910360U (en) | 2018-12-27 | 2018-12-27 | Coal slime drying flue gas heat-taking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209910360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506454A (en) * | 2018-12-27 | 2019-03-22 | 北京中矿博能节能科技有限公司 | Coal slime drying flue gas takes thermal |
-
2018
- 2018-12-27 CN CN201822208627.2U patent/CN209910360U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506454A (en) * | 2018-12-27 | 2019-03-22 | 北京中矿博能节能科技有限公司 | Coal slime drying flue gas takes thermal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104110675B (en) | A kind of boiler smoke degree of depth heat reclamation device and method | |
| CN101775967B (en) | Energy-saving anti-freezing system for coal mine well port | |
| CN201417100Y (en) | Sewage heat exchanger | |
| CN102410036B (en) | High-speed mine return-air heat exchanger and application method thereof | |
| CN202109656U (en) | Natural gas and smoke condensation type waste heat utilization device | |
| CN103604244A (en) | Multi-resource low-temperature waste heat comprehensive utilization system | |
| CN103075172A (en) | Original diffusion tower-based mine return air heat energy utilization device | |
| CN209910360U (en) | Coal slime drying flue gas heat-taking device | |
| CN209445787U (en) | Coal slime dries fume afterheat step advanced recycling system | |
| CN201679478U (en) | Energy-saving anti-freezing system for coal mine pitheads | |
| CN205332168U (en) | Waste heat comprehensive recovery utilization system of thermal power factory | |
| CN113154426A (en) | Boiler system and self-whitening waste heat recovery device thereof | |
| CN210087387U (en) | Mine well head system of preventing frostbite | |
| CN204084324U (en) | A kind of boiler smoke degree of depth heat reclamation device | |
| CN104110820A (en) | Method and device for solar energy hot water and boiler waste heat recovery coupling gradient utilization | |
| CN209181272U (en) | A kind of flue gas waste heat recovery apparatus | |
| CN103629858A (en) | Direct-evaporation-type mine air return source heat pump system with spray dedusting function | |
| CN109506453A (en) | Coal slime dries fume afterheat step advanced recycling system | |
| CN110160265A (en) | A kind of full residual neat recovering system of bathhouse | |
| CN207180440U (en) | A kind of flue gas heat-recovering device based on hot pipe technique | |
| CN216790568U (en) | Mine ventilation air energy recycling heat pump heating system | |
| CN109506454A (en) | Coal slime drying flue gas takes thermal | |
| CN212108585U (en) | Kitchen oil smoke heat energy collecting and utilizing system | |
| CN210463064U (en) | Waste heat recovery device of gas boiler | |
| CN211041017U (en) | Energy-saving water-saving and cold-heat cogeneration device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |