CN205037322U - Super temperature processing system of pulp water - Google Patents
Super temperature processing system of pulp water Download PDFInfo
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- CN205037322U CN205037322U CN201520817279.2U CN201520817279U CN205037322U CN 205037322 U CN205037322 U CN 205037322U CN 201520817279 U CN201520817279 U CN 201520817279U CN 205037322 U CN205037322 U CN 205037322U
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- water
- overflow
- dragveyer
- valve
- pulp
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Abstract
The utility model provides a super temperature processing system of pulp water, this system include the dragveyer, intake female pipe, water level water supplying valve, cooling water set, switching valve, drain pump and overflow pond, it gives dragveyer supplementary cooling water behind female union coupling water level water supplying valve to intake, it establishes on female pipe of intaking to switch over the valve, the other end that the outlet valve is connected to between switching valve and the water level water supplying valve, water intake valve connected arrived the switching valve of cooling water set, be equipped with the overflow pipe that is used for the leading -in overflow pond of overflow water on the dragveyer, the drain pump is established in the overflow pond, and the delivery port of drain pump is equipped with two, and one is used for sending the overflow water back to dragveyer, and another is used for removing the overflow water. The utility model discloses the biggest characteristics lie in having carried out the forced cooling cooling in advance with the dragveyer moisturizing, have avoided the awkward situation of high temperature sludge shipwreck in order to handle, and it is convenient just to adjust the cooling, can be under the prerequisite of guaranteeing the normal operating of slag system interconnected system, and the energy -conserving water conservation of furthest.
Description
Technical field
The utility model relates to power plant's slagging-off field, especially relates to a kind of pulp water overtemperature treatment system.
Background technology
On dragveyer, the wet slag removal scheme in slag storehouse generally adopts in power industry, traditional wet slag removal scheme is equipped with a whole set of slag water treatment system, comprise thickener, the equipment such as sludge pump, pulp water can be carried out the utilization of clarified separation Posterior circle, high temperature pulp water and environment on the way carry out natural heat-exchange in the process, and the pulp water after being disposed has been cooled to close to environment temperature.
Along with the development of technology, in industry, traditional wet slag removal scheme is optimized, take dragveyer self-balancing system, the moisturizing of dragveyer and dehydration (evaporation and wet slag are taken away) are in poised state under normal circumstances, therefore eliminate the slag water treatment system such as thickener.But when tropical conditions and boiler arrange large slag, pulp water overtemperature situation is difficult to solve, and has developed some pulp water cooling measures thus, such as, inside dragveyer cell body, has installed cooling heat exchange device additional, cooling water pipe is arranged along cell body inwall, reduces slag water temperature in cell body with this.But correlative study shows, it is become decrement states from dragveyer center line to housing that the slag pulp water heat of cooling exchanges, thus when which is run, heat transfer effect is poor, consumption of cooling-water is very large, adds that heat-exchanger rig is in dragveyer body in addition, to a certain degree have impact on pulp water cooling volume, in addition, heat exchanger is immersed in dragveyer cell body pulp water, also there is scale formation, affects heat transfer effect; In addition heat exchanger is placed on the external mode of dragveyer in addition, namely dragveyer overflow water is discharged in dragveyer cell body, after carrying out the heat exchange of water water, reaches the object of cooling, is again delivered to dragveyer cell body after cooling by water pump by the heat exchanger of external setting.It is comparatively large that the main shortcoming of which remains the heat exchange water yield, and heat exchanger directly contacts easy fouling with pulp water, and affect heat transfer effect, a lot of power plant finally removes because of weak effect after adopting which to use a period of time.
As can be seen here, when clean moisturizing enters after dragveyer mixes with slag, slag-water slurry character changes greatly, now process high temperature pulp water more difficult, need the consumption of cooling-water of heat exchange comparatively large in addition, generally can side up to a hundred, make treatment system more complicated, except will considering cooling, must consider fouling, wearing and tearing, heat exchanger because overflow water is impure the problem easily such as jam, performance driving economy is poor.
Utility model content
The purpose of this utility model is: for prior art Problems existing, provides a kind of pulp water overtemperature treatment system, solves the problem that existing dragveyer heat-exchange system heat transfer effect difference or easy fouling or water consumption are large.
The purpose of this utility model is achieved through the following technical solutions:
A kind of pulp water overtemperature treatment system, it is characterized in that, this system comprises dragveyer, the female pipe of water inlet, water level water compensating valve, handpiece Water Chilling Units, switch valve, draining pump and overflow pond, cooling water is supplemented to dragveyer after the female pipe of described water inlet connects water level water compensating valve, described switch valve is located at on the female pipe of water, the outlet valve of described handpiece Water Chilling Units is connected between switch valve and water level water compensating valve, water intaking valve is connected to the other end of switch valve, described dragveyer is provided with the overflow pipe for overflow water being imported overflow pond, described draining pump is located in overflow pond, the delivery port of draining pump is provided with two, one for sending overflow water back to dragveyer, another is for draining overflow water.
As further technical scheme, described system comprises collecting-tank, and overflow water is entered collecting-tank by another delivery port of draining pump.
As further technical scheme, described system comprises pulp water supervising device, and this pulp water supervising device and water level water compensating valve automatic linkage control.
As further technical scheme, described draining pump is provided with two, and an operation, another is for subsequent use.
Compared with prior art, the utility model on the one hand no longer needs the Large water treatment equipment such as thickener, and system simplifies, and has saved the repair and maintenance workload of initial outlay, occupation of land and operations staff.On the other hand, by the real-time monitoring of slag water temperature and specific aim cooling measure, can make dragveyer water temperature under the prerequisite maintaining normal condition, energy-saving and water-saving to greatest extent, reduce power plant's operating cost.
Accompanying drawing explanation
Fig. 1 is the heat balance schematic diagram of dragveyer;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the cross section structure schematic diagram of dragveyer.
Description of reference numerals:
1 is that dragveyer, 2 is water level water compensating valve, 4 is handpiece Water Chilling Units, 5 is switch valve, 6 is draining pump, 7 is overflow pond, 8 is water-level gauge for the female pipe of water inlet, 3,11 be overflow pipe, 41 is outlet valve, 42 is water intaking valve.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment
The utility model provides a kind of pulp water overtemperature treatment system, in order to introduce this system in detail, first introduce this system lower based on pulp water heat Balance Calculation model.The Plant arrangement of submerged slag conveyor is in boiler room zero meter (close to earth's surface place), and because this region facility is many, it is very complicated with extraneous heat transmission, and major part is also imponderable.But in order to obtain the thermal balance model of submerged slag conveyor, we must carry out bold hypothesis.Suppose that dragveyer body only and the principal element generation heat transmission such as burner hearth, ambient air, water body, ignores other complicated factors.In fact this hypothesis is also set up, because from application of engineering project, the order of magnitude that the heat between other factors and dragveyer body transmits is very low, completely negligible.
After simplifying, the heat balance of submerged slag conveyor as shown in Figure 1: according to heat transfer theory, heat always transmits from the high place of temperature to the place that temperature is low.Be classified as the water body of the dragveyer upper groove body of research object by us, the heat of absorption mainly contains the heat Q that high-temperature slag of boiler is brought into
slag, burner hearth is to the radiations heat energy Q of water body
spoke.The outside heat transmission of water body comprises the heat Q that overflow water is taken away
overflow, the heat Q that Water Evaporation is taken away
steam, the heat Q that water body is outwardly distributed by dragveyer cell body sidewall
loose, water body reveals the external heat radiation Q of aerial part
from, be exactly the heat Q that dragveyer moisturizing is taken away in addition
water, and the heat Q that wet slag is taken away
wet.
So, obtain equation of heat balance as follows:
Q
slag+ Q
spoke=Q
overflow+ Q
steam+ Q
loose+ Q
from+ Q
wet+ Q
waterkJ/h
In formula: Q
slag---heat of slags, kJ/h;
Q
spoke---radiation of burner hearth heat, kJ/h;
Q
overflow---overflow water heat, kJ/h;
Q
steam---water evaporation heat in cell body, kJ/h;
Q
loose---the heat that in cell body, water externally distributes, kJ/h;
Q
from---in cell body, water reveals aerial part nature distribute heat, kJ/h;
Q
wet---the heat that wet slag is taken away, kJ/h;
Q
water---the heat that supplementing water is taken away, kJ/h.
Wherein, Q
waterfor regulating one of major way of water temperature in dragveyer cell body.First the quantity of slag is increased sharply or boiler coke appearance, the heat Q all will high temperature furnace slag being brought into
slagincrease, namely above equation left side numerical value increases, and we by the temperature of supplementing water and runoff investigation, can make the heat Q that dragveyer moisturizing is taken away
waterstrengthen, simultaneously the heat Q that takes away of Water Evaporation
steamand the heat Q that wet slag is taken away
wetalso can correspondingly strengthen, the numerical value so on the right of equation is corresponding increasing also, when both sides numerical value is equal, realizes dragveyer Slag-water system thermal balance and stablizes, and ensures the object that dragveyer runs under design temperature.
Therefore, according to slag in dragveyer cell body to the requirement of coolant water temperature, a kind of pulp water overtemperature of proposition treatment system of our novelty, this system comprises dragveyer 1, intake female pipe 2, water level water compensating valve 3, handpiece Water Chilling Units 4, switch valve 5, draining pump 6 and overflow pond 7.Cooling water is supplemented to dragveyer 1 after female pipe 2 of intaking connects water level water compensating valve 3.Switch valve 5 is located at into water mother pipe upper 2.The other end that outlet valve 41 is connected between switch valve 5 and water level water compensating valve 3, water intaking valve 42 is connected to switch valve 5 of handpiece Water Chilling Units 4.Dragveyer 1 is provided with the overflow pipe 11 for overflow water being imported overflow pond.Draining pump 6 is located in overflow pond 7, and the delivery port of draining pump 6 is provided with two, one for sending overflow water back to dragveyer 1, another is for draining overflow water.
For the ease of collecting water, system is also provided with collecting-tank, and overflow water is entered collecting-tank by another delivery port of draining pump 6.
Automatically control to realize moisturizing, Operation system setting has pulp water supervising device, and this pulp water supervising device and water level water compensating valve automatic linkage control.Pulp water supervising device comprises water-level gauge 8, for detecting the water level of dragveyer.
Draining pump is provided with two, and an operation, another is for subsequent use.
The supporting four kinds of operational modes of the utility model, can be controlled to carrying out effective cooling to pulp water by force by weak for different operating modes, making it reach the temperature of designing requirement.Four kinds of operational modes and as follows respectively to the corollary equipment that is applied to:
(1) pulp water self-balancing normal operation mode
Under this pattern, close handpiece Water Chilling Units 4 and handpiece Water Chilling Units 4 into and out of water valve, open into and out of the switch valve 5 on the female pipe 2 of the water inlet between water valve simultaneously, submerged slag conveyor normally runs, its moisturizing is supplied by chain flushing water and guide wheel shaft water shutoff, by establishing a set of pulp water supervising device, controls with water level water compensating valve 3 automatic linkage, make the water balance that in dragveyer, radiation evaporation and slag are taken away, realize running without overflow water mode.
(2) overflow water circulating cooling pattern
Under this pattern, the same surface model of valve transfer pattern (1), when boiler knot is large burnt or the quantity of slag increase emergency time, dragveyer water temperature raises, when dragveyer water temperature is greater than 70 DEG C, after delay 20-30 minute, strengthen cooling water increment, allow dragveyer overflow water to enter overflow pond 7, overflow water is through exerting oneself as 30m
3the draining pump 6 of/h returns dragveyer, forms inner loop.The every stove of draining pump arranges 2, and 1 operation, 1 for subsequent use.
(3) handpiece Water Chilling Units forces refrigerating mode
After dragveyer is in overflow situation 20-30 minute, when cooling water temperature is still greater than 70 DEG C, supporting handpiece Water Chilling Units 4 can be enabled, dragveyer is sent into after water being carried out pressure cooling, namely this pattern closes the switch valve 5 on the female pipe 2 of water inlet, open all mating valves of handpiece Water Chilling Units 4, comprise into and out of water valve, cold valves etc., start handpiece Water Chilling Units 4 pairs of inflow temperatures subsequently to regulate, until close handpiece Water Chilling Units 4 when dragveyer coolant water temperature is down to below 65 DEG C, open subsequently into the switch valve 5 on the female pipe 2 of water, close all mating valves of handpiece Water Chilling Units 4.The every stove of handpiece Water Chilling Units is established a set of, and its cool water quantity and refrigerating capacity are chosen according to correlation calculation result.
According to dragveyer equation of heat balance above, supplementing water can be calculated and take away heat Q
water, then by following formula determination amount of makeup water and temperature.
Q
mend=c
mend× G
mend× t
mend× 1000kJ/h
In formula: c
mend---supplementing water specific heat capacity, first can suppose t
mend, then find the value under corresponding temperature, kJ/ (kg DEG C);
G
mend---amount of makeup water, usual G
mend=G
steam+ G
wet, separately have account form, t/h;
T
mend---extraneous supplementary water temperature, i.e. handpiece Water Chilling Units cold water outlet temperature, DEG C.
In addition, handpiece Water Chilling Units adopts step-less adjustment mode, can free adjustment refrigerating capacity; Again by regulating the electrically operated valve on cold water pipeline, then in the scope that this system can allow at power, require that free adjustment exports temperature and the flow of cold water according to the quantity of slag and cooling.Realize the automatic control and adjustment in certain limit during on-the-spot operation by water temperature detection instrument, reach best economic power consumption values.
(4) pulp water displacement patterns
As slag water temperature when above-mentioned two kinds of modes are run simultaneously be not reduced to yet less than 70 DEG C (quantity of slag substantially exceed setting value or boiler coke serious time), now overflow water higher for temperature is seen off in (to fortune coal specialty collecting-tank or similar place) by draining pump 6, strengthen dragveyer water inlet rate of water make-up, pulp water realizes direct current displacement operational mode, now valve transfer pattern is with (1), namely dragveyer water inlet is all supplied by fresh recirculated water draining, reaches the object of displacement high temperature pulp water.
Return to normally until slag water temperature, stop above-mentioned measure, recover the pulp water self-balancing method of operation of controlling water level.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; it should be pointed out that all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a pulp water overtemperature treatment system, it is characterized in that, this system comprises dragveyer, the female pipe of water inlet, water level water compensating valve, handpiece Water Chilling Units, switch valve, draining pump and overflow pond, cooling water is supplemented to dragveyer after the female pipe of described water inlet connects water level water compensating valve, described switch valve is located at on the female pipe of water, the outlet valve of described handpiece Water Chilling Units is connected between switch valve and water level water compensating valve, water intaking valve is connected to the other end of switch valve, described dragveyer is provided with the overflow pipe for overflow water being imported overflow pond, described draining pump is located in overflow pond, the delivery port of draining pump is provided with two, one for sending overflow water back to dragveyer, another is for draining overflow water.
2. a kind of pulp water overtemperature treatment system according to claim 1, it is characterized in that, described system comprises collecting-tank, and overflow water is entered collecting-tank by another delivery port of draining pump.
3. a kind of pulp water overtemperature treatment system according to claim 1, it is characterized in that, described system comprises pulp water supervising device, and this pulp water supervising device and water level water compensating valve automatic linkage control.
4. a kind of pulp water overtemperature treatment system according to claim 1, it is characterized in that, described draining pump is provided with two, and an operation, another is for subsequent use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520817279.2U CN205037322U (en) | 2015-10-21 | 2015-10-21 | Super temperature processing system of pulp water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520817279.2U CN205037322U (en) | 2015-10-21 | 2015-10-21 | Super temperature processing system of pulp water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205037322U true CN205037322U (en) | 2016-02-17 |
Family
ID=55296221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520817279.2U Expired - Fee Related CN205037322U (en) | 2015-10-21 | 2015-10-21 | Super temperature processing system of pulp water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205037322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157046A (en) * | 2015-10-21 | 2015-12-16 | 中国电力工程顾问集团西南电力设计院有限公司 | Slag water overtemperature disposal system and control method |
-
2015
- 2015-10-21 CN CN201520817279.2U patent/CN205037322U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157046A (en) * | 2015-10-21 | 2015-12-16 | 中国电力工程顾问集团西南电力设计院有限公司 | Slag water overtemperature disposal system and control method |
| CN105157046B (en) * | 2015-10-21 | 2017-05-31 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of pulp water overtemperature processing system and control method |
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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: 20160217 Termination date: 20171021 |