CN201715824U - Coal slurry drying system utilizing circulating water afterheat - Google Patents
Coal slurry drying system utilizing circulating water afterheat Download PDFInfo
- Publication number
- CN201715824U CN201715824U CN2010202061401U CN201020206140U CN201715824U CN 201715824 U CN201715824 U CN 201715824U CN 2010202061401 U CN2010202061401 U CN 2010202061401U CN 201020206140 U CN201020206140 U CN 201020206140U CN 201715824 U CN201715824 U CN 201715824U
- Authority
- CN
- China
- Prior art keywords
- coal slurry
- drying
- coal
- condenser
- cooling tower
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The utility model relates to a coal slurry drying system utilizing circulating water afterheat, which comprises a condenser and a water cooling tower. The condenser is connected with a heat exchanger arranged on a coal slurry drying site via a pipeline, the heat exchanger is connected with the water cooling tower via a pipeline, and the water cooling tower is connected with the condenser via a pump station. The coal slurry drying system adopts the wet coal slurry drying technology, is additionally provided with drying equipment arranged on the original drying site only, can not increase energy consumption but enhance capacity of resisting weather and seasons affecting on drying of coal slurry, and reduces water content of coal slurry within 15%, thereby leading the coal slurry to meet requirements on water content of coal slurry as fired, increasing proportion of slurry coal mixing into furnaces, guaranteeing safety running of the furnaces, and simultaneously reducing energy loss for enterprises. In addition, by aid of the coal slurry system, water content of coal slurry can be evaporated, temperature of circulating water can be reduced to meet the designed requirement of water temperature of units, and steam consumption rate of the units is reduced.
Description
Technical field
The utility model relates to a kind of coal slime drying system, especially a kind of recirculated water waste heat oven dry coal slime system that utilizes.
Background technology
At present, applicant company has 2 * 12MW sucking condensing turbine group and 3 * 6MW sucking condensing turbine group and 2 1.7MW to take out condensing to drag machine, and the recirculated water total amount is 12000 tons/hour, and 800GJ/ hour unit waste heat spills into atmosphere.
As shown in Figure 1, steam turbine was done merit to part in power generation process steam extraction realizes external steam supply; All the other steam are finished merit and are entered low pressure (LP) cylinder later on, enter condenser.Cool off terminal exhaust steam by condenser by recirculated water, a large amount of low temperature exhaust heats enter cooling tower by recirculated water and emit.The part heat of discharging under this operating mode accounts for the 20-30% of the total quantity of heat production of boiler, if this part heat can be utilized, will increase substantially the energy utilization rate of steam power plant.To advance the temperature of condenser recirculated water be 30～38 ℃ to this operating mode under the normal condition, and the temperature of outgoing condensate water is 45～55 ℃, and the water of this temperature can not directly utilize, but lose in vain by cooling tower in spring, summer, autumn.
Along with the raising of coal mining mechanization degree, fine coal, smalls shared ratio in raw coal is increasing, and this just makes the primary slime of thermal coal coal washery and the floating tail-coal amount of coking coal coal washery increase greatly.Coal slime is as the byproduct that produces in the washing process, because of have fine size, retentiveness is strong, ash content is high, and contains characteristics such as more clay, has brought inconvenience for the comprehensive utilization of coal slime.Applicant company CFBB fuel be coal slime, the moisture of coal slime reaches more greatly about 28%, and conveying, coal breakage be difficulty relatively, the interpolation and the use of restriction coal slime, when the moisture of coal slime is big, must dries to moisture and could guarantee the CFBB safe utilization below 15%.Coal slime at present relatively more commonly used is removed moisture two kinds of methods: the one, and natural drying, but required site area is bigger, and be subjected to weather, seasonal effect bigger; The 2nd, oven dry, oven dry use steam to need consume fuel, increase the operating cost of enterprise.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, provides a kind of and makes the coal slime water evaporates, makes the temperature of recirculated water be reduced to the design water temperature requirement of unit simultaneously, and that reduces the unit specific steam consumption utilizes recirculated water waste heat oven dry coal slime system.
For achieving the above object, the utility model adopts following technical proposals:
A kind of recirculated water waste heat oven dry coal slime system that utilizes comprises condenser and cooling tower, and condenser is connected with the heat exchanger that is arranged at coal slime airing place by pipeline, and heat exchanger is connected with cooling tower by pipeline, and cooling tower is connected with condenser by pumping plant.
The utility model utilize hot water by DN1020 pipeline and valve speciality hot water and coal slime heat exchanger and unit condenser and cooling tower are communicated with is a unified total system.Adopt the utility model dry/wet coal mud technology, only increased drying plant in original airing field, do not increase any energy consumption, increased the ability of anti-weather, seasonal effect oven dry coal slime, coal slime moisture is reduced in 15%, reach moisture requirement fully, increase boiler and mix the ratio of burning coal slime, ensured safe operation of the boiler into the stove coal slime.Enterprise has also reduced the loss of the energy simultaneously.The utility model has solved wet coal slime oven dry and has been subjected to weather or the restriction of oven dry cost to cause coal slime to utilize the problem of difficulty, the wet coal slime of heat heating that it utilizes the waste heat of unit recirculated water to provide, the moisture of wet coal slime is vapored away to a certain extent, and wet coal slime is able to direct utilization.The utility model can make the coal slime water evaporates, make the temperature of recirculated water be reduced to the design water temperature requirement of unit simultaneously, has reduced the unit specific steam consumption.
Description of drawings
Fig. 1 is the prior art structural representation;
Fig. 2 is the utility model structural representation;
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Among Fig. 2, a kind of recirculated water waste heat oven dry coal slime system that utilizes comprises condenser and cooling tower, and condenser is connected with the heat exchanger that is arranged at coal slime airing place by pipeline, and heat exchanger is connected with cooling tower by pipeline, and cooling tower is connected with condenser by pumping plant.
During work, feed coal is transported into boiler, and the superheated steam that is produced enters takes out unit with fixed attention, and steam turbine was done merit to part in power generation process steam extraction realizes external steam supply (for example industrial gas and resident's heating); Exhaust steam entered low pressure (LP) cylinder after all the other steam were finished merit, entered condenser, and the waste heat circulating hot water in the condenser is used for drying coal slime through the heat exchanger heat exchange in coal slime airing place, and the steam of heat exchange enters cooling tower and returns condenser through pumping plant then.
The utility model utilize hot water by DN1020 pipeline and valve speciality hot water and coal slime heat exchanger and unit condenser and cooling tower are communicated with is a unified total system.Adopt the utility model dry/wet coal mud technology, only increased drying plant in original airing field, do not increase any energy consumption, increased the ability of anti-weather, seasonal effect oven dry coal slime, coal slime moisture is reduced in 15%, reach moisture requirement fully, increase boiler and mix the ratio of burning coal slime, ensured safe operation of the boiler into the stove coal slime.
Claims (1)
1. one kind is utilized recirculated water waste heat oven dry coal slime system, comprise condenser and cooling tower, it is characterized in that: condenser is connected with the heat exchanger that is arranged at coal slime airing place by pipeline, and heat exchanger is connected with cooling tower by pipeline, and cooling tower is connected with condenser by pumping plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202061401U CN201715824U (en) | 2010-05-28 | 2010-05-28 | Coal slurry drying system utilizing circulating water afterheat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202061401U CN201715824U (en) | 2010-05-28 | 2010-05-28 | Coal slurry drying system utilizing circulating water afterheat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201715824U true CN201715824U (en) | 2011-01-19 |
Family
ID=43461828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202061401U Expired - Fee Related CN201715824U (en) | 2010-05-28 | 2010-05-28 | Coal slurry drying system utilizing circulating water afterheat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201715824U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049645A (en) * | 2016-07-05 | 2016-10-26 | 李俊峰 | On-line sludge cleaning system for cooling tower pool in thermal power plant |
| CN107120674A (en) * | 2017-06-22 | 2017-09-01 | 济南市琦泉热电有限责任公司 | The wet coal slime winter coal slime of power plant freezes the elimination system and method for block |
| CN113028755A (en) * | 2021-04-23 | 2021-06-25 | 北京京诚科林环保科技有限公司 | Mineral aggregate drying assembly and device |
-
2010
- 2010-05-28 CN CN2010202061401U patent/CN201715824U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106049645A (en) * | 2016-07-05 | 2016-10-26 | 李俊峰 | On-line sludge cleaning system for cooling tower pool in thermal power plant |
| CN107120674A (en) * | 2017-06-22 | 2017-09-01 | 济南市琦泉热电有限责任公司 | The wet coal slime winter coal slime of power plant freezes the elimination system and method for block |
| CN113028755A (en) * | 2021-04-23 | 2021-06-25 | 北京京诚科林环保科技有限公司 | Mineral aggregate drying assembly and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105222205A (en) | A kind of step heating system of electric power heating molten salt energy-storage | |
| CN103277155B (en) | Brown coal are predrying-preheated air-UTILIZATION OF VESIDUAL HEAT IN compound coal generating system | |
| CN103807868A (en) | Inner heating fluidized bed drying system applicable to brown coal air cooling generator set | |
| CN114646065A (en) | Peak-shaving power generation system and method of coal-fired unit coupled with sludge drying incineration | |
| CN112178671A (en) | Method and system suitable for increasing direct blending combustion proportion of wet coal slime for pulverized coal fired boiler | |
| CN201715824U (en) | Coal slurry drying system utilizing circulating water afterheat | |
| CN204404213U (en) | A kind of power station brown coal fluidized bed drying system saving desulfurizing tower water consumption | |
| CN203626908U (en) | Flue gas waste heat power generating device of low-temperature organic Rankine cycling industrial boiler | |
| CN104534850A (en) | Raw coal low-temperature pre-drying system and method using flue gas and waste steam waste heat | |
| CN110332718A (en) | Utilize the system of groove type solar conduction oil collection hot working fluid heating coal-fired boiler hot primary wind | |
| CN103939158B (en) | A kind of low-order coal purification power generation system | |
| CN101963357A (en) | Method for generating power by using sludge | |
| CN108658417A (en) | A kind of coal unit collaboration desiccation municipal sludge system | |
| CN203960020U (en) | A kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar | |
| CN203239407U (en) | Lignite predrying-air preheating-waste heat utilization combination coal-fired power generation system | |
| CN206638014U (en) | A kind of brown coal drying and upgrading electricity generation system | |
| CN102078855A (en) | Drying residual-heat utilization device of large-scale automobile coating production line | |
| CN205619598U (en) | Dry complementary power generation system of supplementary air cooling unit of solar energy of integrated raw coal | |
| CN203454878U (en) | Thermal storage box of multi-energy high-temperature thermal-storage energy-saving device | |
| CN203603991U (en) | Low temperature organic Rankine cycle industrial waste heat generating equipment | |
| CN207880864U (en) | A kind of oxygen-enriched combusting energy-saving and emission-reduction system | |
| CN203258659U (en) | Energy-saving type tail gas treatment device | |
| CN202369480U (en) | Device for anhydration of sludge by utilizing low-temperature tail exhaust gas of cement kiln | |
| CN204342729U (en) | Novel bituminous coal conny transforms anthracite briquette coproduction utilization system | |
| CN207674414U (en) | A kind of biomass direct-combustion boiler waste heat recycling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20190528 |