CN109631503A - Coal humidifying technology residual-heat utilization method and its device - Google Patents
Coal humidifying technology residual-heat utilization method and its device Download PDFInfo
- Publication number
- CN109631503A CN109631503A CN201811425746.1A CN201811425746A CN109631503A CN 109631503 A CN109631503 A CN 109631503A CN 201811425746 A CN201811425746 A CN 201811425746A CN 109631503 A CN109631503 A CN 109631503A
- Authority
- CN
- China
- Prior art keywords
- coal
- damping
- warehouse
- preheating
- heat utilization
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Coke Industry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of coal humidifying technology residual-heat utilization method and its devices, method includes the following steps: 1) obtaining saturation condensed water using flash distillation after low-pressure steam and the heat exchange of wet coal；2) saturation condensed water that step 1) obtains is used to that the damping coal that step 1) obtains to be further dried preheating, when drying and preheating is evacuated to -0.035~-0.06MPa；3) when damping coal temperature is heated to 65~70 DEG C, stop vacuumizing；4) when damping coal temperature rises to 80~90 DEG C, continue to vacuumize, when temperature is higher than 94 DEG C, stop vacuumizing, complete the drying and preheating of current batch of damping coal；5) circulating repetition step 1)~4), carry out the drying and preheating of next group damping coal.Saturation condensed water after damping is introduced directly into intermediate warehouse by this method, that is, device, to the further preheating and drying of damping coal in warehouse, the thermal efficiency of saturation condensed water greatly improved, reduce coking by coke oven process energy consumption.
Description
Technical field
The present invention relates to heat recovery technologies, in particular to a kind of coal humidifying technology residual-heat utilization method and its device.
Background technique
Coal conditioning technique is a kind of drying coke making process that wet coal is dried to moisture 6% or so, have energy conservation, volume increase,
Improve the advantages such as coke quality.Coal conditioning technique has three generations, and heat medium is respectively conduction oil, steam, flue gas and hot-blast stove
Exhaust gas.What domestic operation was relatively stable at present is second generation steam drying rotary kiln.
Second generation steam rotary kiln generally uses the low-pressure steam after dry coke quenching power generation for drying source, 220 DEG C of samming
Flash distillation becomes being saturated condensed water after low-pressure steam and the heat exchange of wet coal, and dry coke quenching water cyclic system is reentered after heat-exchange system cools down
System.This waste heat recovery mode has the following problems: 1) high temperature is saturated condensed water heat after heat exchanger recovery section heat
There is higher thermal losses in the process in recycling；2) heat recycled is only used for heating clear recirculated water or low boiling working fluid hair
Electricity, purposes effect interrogatory are aobvious.
Summary of the invention
Present invention aim to provide a kind of coal humidifying technology residual-heat utilization method and its device, this method and its dress
It is set effective the thermal efficiency for improving saturation condensed water, reduces coking by coke oven process energy consumption.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of coal humidifying technology residual-heat utilization method, including
Following steps:
1) saturation condensed water is obtained using flash distillation after low-pressure steam and the heat exchange of wet coal；
2) it is used for the saturation condensed water that step 1) obtains that preheating is further dried to the damping coal that step 1) obtains, it is dry
- 0.035~-0.06MPa is evacuated to when preheating；
3) when damping coal temperature is heated to 65~70 DEG C, stop vacuumizing；
4) when damping coal temperature rises to 80~90 DEG C, continue to vacuumize, when temperature is higher than 94 DEG C, stop vacuumizing,
Complete the drying and preheating of current batch of damping coal；
5) circulating repetition step 1)~4), carry out the drying and preheating of next group damping coal.
Further, in the step 2), it is evacuated to -0.04~-0.06MPa.
Further, in the step 4), when damping coal temperature rises to 80~85 DEG C, continue to vacuumize.
Further, in the step 1), saturation condensate temperature is 120~140 DEG C.
A kind of device for realizing above-mentioned coal humidifying technology residual-heat utilization method, including steam rotary kiln, further include flash tank,
Warehouse and aspiration pump among damping coal；The condensation-water drain of the steam rotary kiln and the condensation water inlet of the flash tank connect
It connects, the high temperature thermal medium import of warehouse connects among the saturation condensation-water drain of the flash tank and the damping coal, the steaming
The damping coal import of warehouse connects among the damping coal export of vapour rotary kiln and the damping coal；The aspiration pump and the damping
The vacuum orifice connection of warehouse among coal.
Further, it is equipped with heating pipe and temperature sensor in warehouse among the damping coal, the heating pipe exists
Serpentine-like distribution, the high temperature thermal medium import are arranged in the heating water from top to bottom in warehouse among the damping coal
Pipe head end, the heating pipe end set low-temperature heat medium outlet.
Further, the flash tank saturation condensation-water drain and the damping coal centre warehouse high temperature thermal medium into
Pipeline between mouthful is equipped with water pump and flow valve.
Further, the flash tank saturation condensation-water drain and the damping coal centre warehouse high temperature thermal medium into
Heat exchanger is also connected between mouthful.
Further, the low-temperature heat medium outlet of warehouse connects dry coke quenching sink among the damping coal.
Compared with prior art, the invention has the following advantages that
First, the saturation condensed water after damping is introduced directly into intermediate warehouse by the method for the present invention, to the damping coal in warehouse
Further preheating and drying greatly improved the thermal efficiency of saturation condensed water, reduce coking by coke oven process energy consumption, for after damping
Saturation condensed water provides a kind of more efficient heat recovery method.
Second, the high-temperature condensation water after steam rotary kiln and flash distillation is introduced intermediate warehouse, hollow storage by apparatus of the present invention
Warehouse heating pipe and temperature sensor to be added in storehouse, and are connected with vaccum-pumping equipment, present apparatus structure is simple, good manufacturability,
While preheating is further dried to damping coal, the thermal efficiency of saturation condensed water greatly improved, reduce coking by coke oven process
Energy consumption.
Detailed description of the invention
Fig. 1 is a kind of coal humidifying technology afterheat utilizing system structural schematic diagram.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing, convenient for more clearly understanding the present invention, but they
Limiting the invention.
Coal humidifying technology residual heat using device as shown in Figure 1, including steam rotary kiln 1, flash tank 2, among damping coal
Warehouse 3 and aspiration pump 4；The condensation-water drain 1.1 of steam rotary kiln 1 is connect with the condensation water inlet 2.1 of flash tank 2, flash tank 2
Saturation condensation-water drain 2.2 connect with the high temperature thermal medium import 3.1 of warehouse 3 among damping coal, the damping of steam rotary kiln 1
Coal export 1.2 is connect with the damping coal import 3.2 of warehouse 3 among damping coal；Aspiration pump 4 and the pumping of warehouse 3 among damping coal are true
It eats dishes without rice or wine 3.1 connections, 4 connecting tube of aspiration pump leads to outdoor.
In above scheme, heating pipe 3.3 and temperature sensor 3.4, heating pipe are equipped among damping coal in warehouse 3
3.3 serpentine-like distribution, high temperature thermal medium import 3.1 are arranged in heating pipe from top to bottom in warehouse 3 among the damping coal
3.3 head ends, 3.3 end of heating pipe set low-temperature heat medium outlet 3.5.The saturation condensation-water drain 2.2 and damping coal of flash tank 2
Pipeline between the high temperature thermal medium import 3.1 of intermediate warehouse 3 is equipped with water pump 5 and flow valve 6.The saturation of flash tank 2 condenses
Heat exchanger 7 is also connected between the high temperature thermal medium import 3.1 of warehouse 3 among water out 2.2 and damping coal.Warehouse among damping coal
3 3.5 connection dry coke quenching sink 8 of low-temperature heat medium outlet.
Coal humidifying technology residual-heat utilization method is as follows:
1) saturation condensed water is obtained using flash distillation after low-pressure steam and the heat exchange of wet coal, saturation condensate temperature is 120~140
℃；
2) it is used for the saturation condensed water that step 1) obtains that preheating is further dried to the damping coal that step 1) obtains, it is dry
It is evacuated to -0.035~-0.06MPa when preheating, is preferably evacuated to -0.04~-0.06MPa.
3) when damping coal temperature is heated to 65~70 DEG C, stop vacuumizing；
4) when damping coal temperature rises to 80~90 DEG C, at preferably 80~85 DEG C, continue to vacuumize, be higher than 94 DEG C to temperature
When, stop vacuumizing, completes the drying and preheating of current batch of damping coal；
5) circulating repetition step 1)~4), carry out the drying and preheating of next group damping coal.
Specific steps are as follows:
1) aspiration pump 4 is opened, intermediate warehouse 3 is vacuumized, vacuum degree is in 0.05MPa；
2) flow valve 6 that saturation condensed water leads to intermediate warehouse 3 is opened, water pump 5 is opened, by 140 DEG C after damping of saturation
Condensed water is introduced into the heating pipe 3.3 of intermediate warehouse 3, to heating in the intermediate warehouse 3 equipped with damping coal, to heat
Dry damping coal, the water after exchanging heat go dry coke quenching sink 8 to recycle, and saturation condensed water is in addition to for the heating of damping coal, also
Some can go heat exchanger to carry out waste heat recycling；
3) when damping coal temperature is heated to 65 DEG C, stop vacuumizing；
4) when damping coal temperature rises to 85 DEG C, continue to vacuumize, when temperature is more than 94 DEG C, stop vacuumizing, bottom
Discharging；
5) drying and preheating of next group damping coal repeatedly 1)~4) is carried out.
Claims (9)
1. a kind of coal humidifying technology residual-heat utilization method, it is characterised in that: the following steps are included:
1) saturation condensed water is obtained using flash distillation after low-pressure steam and the heat exchange of wet coal；
2) it is used for the saturation condensed water that step 1) obtains that preheating, drying and preheating is further dried to the damping coal that step 1) obtains
When be evacuated to -0.035~-0.06MPa；
3) when damping coal temperature is heated to 65~70 DEG C, stop vacuumizing；
4) when damping coal temperature rises to 80~90 DEG C, continue to vacuumize, when temperature is higher than 94 DEG C, stop vacuumizing, complete
The drying and preheating of current batch of damping coal；
5) circulating repetition step 1)~4), carry out the drying and preheating of next group damping coal.
2. coal humidifying technology residual-heat utilization method according to claim 1, it is characterised in that: in the step 2), vacuumize
To -0.04~-0.06MPa.
3. coal humidifying technology residual-heat utilization method according to claim 1, it is characterised in that: in the step 4), to damping
When coal temperature rises to 80~85 DEG C, continue to vacuumize.
4. the according to claim 1 or 2 or 3 coal humidifying technology residual-heat utilization methods, it is characterised in that: in the step 1),
Being saturated condensate temperature is 120~140 DEG C.
5. a kind of device for realizing coal humidifying technology residual-heat utilization method described in claim 1, including steam rotary kiln (1),
It is characterized in that: further including flash tank (2), warehouse (3) and aspiration pump (4) among damping coal；The condensation of the steam rotary kiln (1)
Water out (1.1) is connect with the condensation water inlet (2.1) of the flash tank (2), the saturation condensation-water drain of the flash tank (2)
(2.2) it is connect with the high temperature thermal medium import (3.1) of warehouse (3) among the damping coal, the damping of the steam rotary kiln (1)
Coal export (1.2) is connect with the damping coal import (3.2) of warehouse (3) among the damping coal；The aspiration pump (4) and the tune
Vacuum orifice (3.1) connection of warehouse (3) among wet coal.
6. the device of coal humidifying technology residual-heat utilization method according to claim 5, it is characterised in that: among the damping coal
Heating pipe (3.3) and temperature sensor (3.4) are equipped in warehouse (3), the heating pipe (3.3) is among the damping coal
Distribution serpentine-like from top to bottom in warehouse (3), the high temperature thermal medium import (3.1) are arranged in the heating pipe
(3.3) head end, heating pipe (3.3) end set low-temperature heat medium outlet (3.5).
7. according to the device of the coal humidifying technology residual-heat utilization method of claim 5 or 6, it is characterised in that: the flash tank
(2) pipe among saturation condensation-water drain (2.2) and the damping coal between the high temperature thermal medium import (3.1) of warehouse (3)
Road is equipped with water pump (5) and flow valve (6).
8. according to the device of the coal humidifying technology residual-heat utilization method of claim 5 or 6, it is characterised in that: the flash tank
(2) also connect between the high temperature thermal medium import (3.1) of warehouse (3) among saturation condensation-water drain (2.2) and the damping coal
There are heat exchanger (7).
9. the device of coal humidifying technology residual-heat utilization method according to claim 6, it is characterised in that: among the damping coal
Low-temperature heat medium outlet (3.5) connection dry coke quenching sink (8) of warehouse (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425746.1A CN109631503B (en) | 2018-11-27 | 2018-11-27 | Coal moisture control process waste heat utilization method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811425746.1A CN109631503B (en) | 2018-11-27 | 2018-11-27 | Coal moisture control process waste heat utilization method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109631503A true CN109631503A (en) | 2019-04-16 |
| CN109631503B CN109631503B (en) | 2020-11-24 |
Family
ID=66069723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811425746.1A Active CN109631503B (en) | 2018-11-27 | 2018-11-27 | Coal moisture control process waste heat utilization method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109631503B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2485611Y (en) * | 2001-06-23 | 2002-04-10 | 李宗礼 | Drier structure with adjustable temperature and pressure |
| CN101693843A (en) * | 2009-10-27 | 2010-04-14 | 山东天力干燥设备有限公司 | Coal steam rotating moisture control process system and method thereof |
| CN103453752A (en) * | 2013-08-30 | 2013-12-18 | 武汉工程大学 | Low-energy-consumption lignite drying process for recovering lignite moisture and drying equipment |
| CN107514874A (en) * | 2017-08-01 | 2017-12-26 | 山东科院天力节能工程有限公司 | Suitable for the Novel steam rotary drying system of the high viscous material of high humidity |
-
2018
- 2018-11-27 CN CN201811425746.1A patent/CN109631503B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2485611Y (en) * | 2001-06-23 | 2002-04-10 | 李宗礼 | Drier structure with adjustable temperature and pressure |
| CN101693843A (en) * | 2009-10-27 | 2010-04-14 | 山东天力干燥设备有限公司 | Coal steam rotating moisture control process system and method thereof |
| CN103453752A (en) * | 2013-08-30 | 2013-12-18 | 武汉工程大学 | Low-energy-consumption lignite drying process for recovering lignite moisture and drying equipment |
| CN107514874A (en) * | 2017-08-01 | 2017-12-26 | 山东科院天力节能工程有限公司 | Suitable for the Novel steam rotary drying system of the high viscous material of high humidity |
Non-Patent Citations (1)
| Title |
|---|
| 李帅俊，李晓光: ""煤调湿技术在国内外发展与应用"", 《干燥技术与设备》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109631503B (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104132481B (en) | Flue gas source heat pump hot-water system and low-temperature flue gas waste heat recovery utilization method | |
| CN105275515B (en) | Coke oven flue-gas waste-heat and dry-quenching waste-heat coupled power generation system and coupled power generation method thereof | |
| CN204177172U (en) | A kind of suction-type lithium bromide dewatering drying device | |
| CN107314621A (en) | A kind of method for microwave drying and its device of use | |
| CN202221254U (en) | Workshop middle-low-temperature steam waste heat step recovery device | |
| CN109631503A (en) | Coal humidifying technology residual-heat utilization method and its device | |
| CN205102453U (en) | Solar energy doublestage ejector refrigeration system | |
| CN204705159U (en) | Cereal vacuum circle-type drier | |
| CN208964781U (en) | Sludge drying gas waste-heat utilizes sludge viscosity reducing processing unit | |
| CN205102622U (en) | A bead condensation formula heat exchanger that is used for after brown coal drying recovery waste heat and water simultaneously | |
| CN104324512B (en) | Thermo-compression evaporation unit | |
| CN110455044B (en) | Wet coal pre-drying system and method based on complementary energy utilization | |
| CN209392755U (en) | Closed cycle spray drying device | |
| CN204705118U (en) | Heat-pump-type vacuum dryer | |
| CN203454403U (en) | Heat exchange system of molecular distillation heat pump | |
| CN202250270U (en) | Steam turbine condensing system | |
| CN218089316U (en) | Device for drying sludge by using waste heat of thermal power plant | |
| CN108131656B (en) | Ultra-clean emission cold and hot co-production system of coking plant | |
| CN205740938U (en) | A kind of lubricating oil distillation refining system | |
| CN204246854U (en) | Thermo-compression evaporation unit | |
| CN218915787U (en) | Grain drying device utilizing biomass heat supply and hot air condensation technology | |
| CN213396420U (en) | Heat pump dryer | |
| CN211290731U (en) | Far infrared hot air energy-saving furnace charge automatic drying line | |
| CN108114493B (en) | Heat source tower solution concentration device and concentration method thereof | |
| CN103471245A (en) | Heat exchange system of molecular distillation heat pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |