CN106678772A - Waste heat boiler system for electricity generation through waste incineration - Google Patents
Waste heat boiler system for electricity generation through waste incineration Download PDFInfo
- Publication number
- CN106678772A CN106678772A CN201611224642.5A CN201611224642A CN106678772A CN 106678772 A CN106678772 A CN 106678772A CN 201611224642 A CN201611224642 A CN 201611224642A CN 106678772 A CN106678772 A CN 106678772A
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- water
- superheater
- steam
- main
- pump
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- 230000005611 electricity Effects 0.000 title claims abstract description 25
- 238000004056 waste incineration Methods 0.000 title claims abstract description 25
- 239000002918 waste heat Substances 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000000203 mixture Substances 0.000 claims abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 37
- 239000003546 flue gas Substances 0.000 claims description 37
- 238000003860 storage Methods 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 21
- 239000000428 dust Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 16
- 239000004071 soot Substances 0.000 claims description 16
- 239000000498 cooling water Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000008400 supply water Substances 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 238000010248 power generation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 description 15
- 230000009467 reduction Effects 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 239000003500 flue dust Substances 0.000 description 4
- 239000008235 industrial water Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010782 bulky waste Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- -1 very big to harm Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
- F22G7/12—Steam superheaters characterised by location, arrangement, or disposition in flues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
Abstract
The invention discloses a waste heat boiler system for electricity generation through waste incineration. A main water supply system supplies water to an economizer. The heated water is conveyed to a steam drum by the economizer, and a water steam mixture is output to an evaporator by the steam drum, heated and then returned to the steam drum through a pipeline. Steam is output to superheaters by the steam drum, heated and then conveyed to a main steam pipeline. The steam is output to a steam turbine for electricity generation by the main steam pipeline. A condenser for recovering the steam is arranged on the steam turbine. The waste heat boiler system for electricity generation through waste incineration has the advantages that by improving structures of a boiler water steam system and a steam system, a waste heat boiler can be adaptable to the requirements of large waste incineration electricity generation, the energy-saving environment-friendly and efficient effect is achieved, and stability and reliability of a waste incineration electricity generation system are improved.
Description
Technical field
The present invention relates to waste incineration and generating electricity field, more particularly to waste incineration and generating electricity system afterheat utilizing system.
Background technology
Waste heat boiler is a traditional energy-saving equipment, in extensive range, and in field of waste incineration, due to waste incineration
, there is problems with the particularity of produced flue gas：1st, there is fluctuation in flue-gas temperature, steam production be influenceed, so as to influence
Steam turbine works；2nd, boiler feed system is difficult to meet large-scale burning electricity generation water requirements；If the 3, any part is damaged,
Generating production may be had influence on；4th, the flue gas of waste incineration can produce bioxin gas, very big to harm, and waste heat pot
The superheater of stove to the temperature of evaporator section can drastically decline, and easily produce bioxin；5th, the dust of combustion product gases is easily adsorbed
On the tube wall of heat exchange pipeline, dust has corrosivity, can influence the service life of pipeline.
The content of the invention
The technical problems to be solved by the invention are to realize a kind of waste heat boiler system that can be applied to waste incineration and generating electricity
System.
To achieve these goals, the technical solution adopted by the present invention is：It is applied to the waste heat boiler of waste incineration and generating electricity
System, main feed system is supplied water to economizer, and to drum, the drum output steam is mixed the water after the economizer conveying heating
Compound is recycled to drum after being heated to evaporator through pipeline, and the drum is delivered to main steam after exporting steam to superheater heating
Pipeline, the main steam line exports steam to steam turbine power generation, and the steam turbine is provided with the condenser of recovered steam, along described
The main water supply pipe water (flow) direction of main feed system is sequentially provided with main water supply valve, feed pump and main throttle plate aperture, jetting pumping
The water for taking jetting case is recycled to jetting case through the condensation pipe in the condenser, and the jetting case is provided with water injection pipe, described to penetrate
Water tank upper is provided with overfall, and the overfall passes through the downward diversion of overflow pipe to spill box, the superheater, evaporator
Pipe level with economizer is arranged in the flue being vertically arranged, and the superheater is by the first superheater, that are sequentially connected in series
Two superheaters and the 3rd superheater are constituted, and the flue collector above combustion chamber is connected with the first flue top, under first flue
Side connects with the second flue lower section, and is provided with mechanism of gathering dust in connection position bottom, and first stack base is provided with protection and steams
Hair device, the superheater and evaporator are placed in the second flue, and the economizer is placed in the 3rd flue；The main water supply valve
Bypass has auxiliary water supply line on main water supply pipe before, and the auxiliary water supply line is through auxiliary restricting orifice, three-way valve to deoxygenation
Device supplies water, and the one of path of three-way valve supplies water through auxiliary water pump to waste heat boiler；The spill box passes through flood pump
To cooling tower, the cooling tower delivery port conveys cooling water to jetting case to pump water.
The side of the protection evaporator is provided with the sootblower nozzle to its heating surface air blast, and the soot blower is by being provided with electricity
The branch pipe of the main pipeline connection steam source of the gas of magnet valve, the main pipeline and connection main pipeline is provided with nozzle, on the main pipeline
Electronic barometer is provided with, to PLC, the PLC outputs control signals to magnetic valve to the electronic barometer output pressure signal.
The nozzle is horizontal flat nozzle, and the nozzle inclination sends out high pressure to protection evaporator heating surface downwards
Steam.
The influent header of first superheater connects the saturated vapor output channel of drum, and first superheater goes out
Mouth header connects the influent header of the second superheater through the first attemperator, and the outlet header of second superheater is through the second desuperheat
Device connects the influent header of the 3rd superheater, the outlet header connection main steam line of the 3rd superheater, second cigarette
Road is sequentially provided with the first superheater, the second superheater and the 3rd superheater from top to bottom.
The main water supply system exports heated demineralized water to the first attemperator and the second attemperator, first desuperheat
Electronic flow valve is equipped with the water supply line of device and the second attemperator, second superheater is externally provided with the first TEMP
Device, the 3rd superheater is externally provided with second temperature sensor, first temperature sensor, second temperature sensor output temperature
To PLC, the PLC outputs opening amount signal is adjusted to two electronic flow valves degree signal.
3rd superheater is provided with protection baffle plate, and the protection baffle plate is by being welded on the 3rd every heat exchanger tube of superheater
Flue gas to cover composition to the C-shaped pipes of side, and the C-shaped pipes set is flexible steel bar, and the C-shaped pipes set outer surface is evenly distributed with recessed
Shape structure is fallen into, vibrations connection strap is provided between the C-shaped pipes set, the C-shaped pipes set edge is provided with for beaing protection baffle plate
Rapping apparatus.
The oxygen-eliminating device extracts demineralized water by supply-water pump, and the auxiliary water pump output end is distinguished through having valvular two pipelines
The input and output side of main throttle orifice plate is connected, check valve, the storage are equipped with the main water supply pipe and auxiliary water supply line
Heating arrangements are provided with water cavity.
It is respectively main water-jet pump and auxiliary water-jet pump that the water-jet pump is provided with two, and the main water-jet pump and auxiliary water-jet pump are mutual
Check valve and water check valve are equipped with two pipelines of parallel connection, the main water-jet pump in parallel and auxiliary water-jet pump.
The jetting case passes through two storage zones of baffle interval being vertically arranged, and the upper, middle and lower position of the dividing plate respectively sets
There is an intercommunicating pore, the cooling tower conveys low temperature storage zones where cooling water to delivery port, and it is cold that the water-jet pump is exported
But to another high temperature storage zones, the water injection pipe is placed in low temperature storage zones top to water.
Level sensor is provided with the jetting case, temperature sensor, the temperature are provided with the low temperature storage zones
Sensing and level sensor output signal to PLC, and high temperature storage zones bottom is provided with pump mouth, and the pump mouth is through drawing water
Pump connects cooling tower, and the PLC outputs control signals to the electronic valve on suction pump and water injection pipe.
The advantage of the invention is that by the improvement to boiler water-steam system, vapour system structure, waste heat boiler can be made
Bulky refuse burning electricity generation demand is adapted to, the effect of energy-saving, environment-friendly and high-efficiency is reached, and improve the stabilization of waste incineration and generating electricity system
Property and reliability.
Brief description of the drawings
The mark in the content and figure of every width accompanying drawing expression in description of the invention is briefly described below：
Fig. 1 is afterheat utilizing system structural representation；
Fig. 2 is afterheat utilizing system pipeline connecting figure；
Fig. 3 is waste heat boiler main feed system structural representation；
Fig. 4 is jetting case circulating system structure schematic diagram；
Mark in above-mentioned figure is：1st, economizer；2nd, drum；3rd, evaporator；4th, the first superheater；5th, the second overheat
Device；6th, the 3rd superheater；7th, evaporator is protected；8th, soot blower.
9th, oxygen-eliminating device；10th, water storage cavity；11st, auxiliary restricting orifice；12nd, main throttle orifice plate；13rd, auxiliary water pump；14th, feed pump.
15th, jetting case；16th, spill box；17th, main water-jet pump；18th, auxiliary water-jet pump；19th, industrial water；20th, flood pump；21st, cool down
Tower.
Specific embodiment
As shown in figure 1, in the exhaust gases passes of afterheat utilizing system, along flow of flue gas direction be sequentially provided with protection evaporator 7,
Superheater, evaporator 3 and economizer 1, because the system is applied to refuse incineration exhaust-heating boiler, it is internal produce amount of dust compared with
Greatly, it is therefore desirable to protection evaporator 7 is arranged before superheater.
Connected with the first flue top for the flue collector above the combustion chamber of combustion refuse, the first flue lower section and second
The connection of flue lower section, and mechanism of gathering dust is provided with connection position bottom, the second flue top connects with the 3rd flue, such perpendicular
Straight flue layout type, it is possible to increase flue dust effect of settling, entrained fume amount in reduction flue gas, and can be by first
The dust arrester installation that flue lower section connects below position with the second flue is collected treatment.
Protection evaporator 7 is arranged in the import of convection pass (the first flue), and before finishing superheater, it has two main work(
Energy：One is that superheater bank can be protected to avoid abrasion, and two is that the protection heating surface of evaporator 7 can make flue-gas temperature enter superheater
Before be reduced to less than 650 DEG C, this cigarette temperature is for preventing the corrosion of superheater tube most important.Even if what flue gas was carried dissolves soot particle
Fall on the protection pipe of evaporator 7, but because the protection tube wall temperature of evaporator 7 is significantly less than superheater tube wall temperature, soot particle becomes
Solid, dust stratification is just can remove by steam soot cleaning system, and the danger of high temperature corrosion is greatly reduced.
To improve the dedusting effect of protection evaporator 7, the side of protection evaporator 7 is provided with the soot blower to its heating surface air blast
8 nozzles, soot blower 8 uses programme-control using the dust stratification on steam soot-blower removal heating surface, a whole set of soot blower, periodically
Ash disposal, usual 1~2 times/day.
Soot blower 8 connects steam source of the gas by being provided with the main pipeline of magnetic valve, and nozzle is provided with multiple, is separately mounted to supervisor
On the branch pipe of road and connection main pipeline, nozzle is horizontal flat nozzle, and nozzle inclination is downwards to the protection heating surface of evaporator 7
High steam is sent out, such structure can improve the area and effect of each nozzle soot blowing, so as to reduce the arrangement number of nozzle
Amount, can set one group of nozzle on the pipeline in the superiors' heating surface and per three-layer protection evaporator 7, and every group of nozzle sets eight
It is individual, the surrounding of protection evaporator 7 is uniformly arranged on respectively.
The main pipeline of soot blower 8 is provided with electronic barometer, electronic barometer output pressure signal to PLC, PLC output controls
Signal processed obtains pipeline pressure to magnetic valve by PLC, so that electromagnetic valve for adjusting aperture control soot blowing air pressure, it is ensured that soot blowing is imitated
Really.It is further precise control soot blower occasion, laser detector can be set in the pipeline both sides of the superiors' protection evaporator 7,
After level is fixed, laser crosses the superiors' heating surface top of protection radiator, side transmitting laser signal, opposite side during work
Laser signal is received, represent that dust is blocked up when laser signal is blocked, then can control to send the signal of soot blowing request.
The exhaust gases passes of waste heat boiler are vertically arranged, and protect the pipe level of evaporator 7 to set, and protect the knot of evaporator 7
Structure is identical with the structure of the evaporator 3 for being commonly used for waste heat boiler, and it is the demineralized water after heating that it supplies water.
Superheater is made up of the first superheater 4, the second superheater 5 and the 3rd superheater 6, by setting three groups of superheaters,
Vapor (steam) temperature can be controlled and prevent flue-gas temperature reduction too fast, in case bioxin is generated.
As shown in figure 1, the second flue is sequentially provided with the first superheater 4, the second superheater 5 and the 3rd superheater from top to bottom
6, evaporator 3 is placed in the top of the first superheater 4 of the second flue, and economizer 1 is placed in the 3rd flue, by three groups of flues and bottom
Portion's mode of communicating, can effectively reduce flue dust, it is to avoid adhere to foreign matter on pipeline, be favorably improved the service life and Re Jiao of pipeline
Effect is changed, and such layout structure can more adapt to the heat exchange supply of flue gas produced by waste incineration, can be more
The reliable and stable steam that stabilization is provided for steam turbine.
The influent header of the first superheater 4 connects the saturated vapor output channel of drum 2, the outlet connection of the first superheater 4
Case connects the influent header of the second superheater 5 through the first attemperator, and the outlet header of the second superheater 5 is connected through the second attemperator
The influent header of the 3rd superheater 6, the outlet header connection main steam line of the 3rd superheater 6.Outlet header and influent header
Between for superheater pipeline.
Flue collector above combustion chamber is connected with the first flue top, and the first flue lower section connects with the second flue lower section,
And mechanism of gathering dust is provided with connection position bottom, and dust content can be so reduced, the second flue is sequentially provided with from top to bottom
First superheater 4, the second superheater 5 and the 3rd superheater 6.
In order to be accurately controlled vapor (steam) temperature and flue-gas temperature, the water supply of three layer of first attemperator and the second attemperator
Electronic flow valve is equipped with pipeline, the second superheater 5 is provided with the first temperature sensor, and the 3rd superheater 6 is externally provided with the second temperature
Degree sensor, first temperature sensor, second temperature sensor output temperature signal to PLC pass through flue gas for detecting
Temperature, according to ambient temperature state, output opening amount signal is adjusted to two electronic flow valves PLC, i.e. flue-gas temperature gets over Gao Ze
Electronic flow valve opening is bigger such that it is able to rational control vapor (steam) temperature and fine setting flue-gas temperature.
The water supply of attemperator uses demineralized water, demineralized water to be delivered to oxygen-eliminating device through water pump, and the water of oxygen-eliminating device output is heated
, to the first attemperator and the second attemperator, heating-up temperature is typically at 140 degree or so for pressurized delivered after device heating.
The service life of superheater is further improved for mating protection baffle plate, and superheater can be coordinated to control flue-gas temperature,
First stack base is provided with protection evaporator 7, and protection evaporator 7 pipeline is equally horizontally disposed with, and protection evaporator 7 is equally improved and removed
Salt solution, demineralized water is delivered to oxygen-eliminating device through water pump, and pressurized delivered is to protecting steaming after the heated device heating of water of oxygen-eliminating device output
Hair device 7.The protection water filling port of evaporator 7 is provided with Temperature control valve (using electronic flow valve), under the first flue lower section and the second flue
Fang Liantong positions are provided with flue-gas temperature sensor, and flue-gas temperature sensor exports flue-gas temperature signal to PLC, PLC output apertures
Regulate signal is to temp.-control valve, so as to start the effect of reduction velocity of flue gas, temperature and dustiness.By protecting evaporator 7,
Can stop flue dust, improve dust-laying effect, and the temperature that flue gas dramatic decrease uses to a suitable superheater can be made, this
Temperature fluctuation range does not interfere with the generation of bioxin.
Further to protect superheater and control flue-gas temperature, the lower section of the 3rd superheater 6 is provided with protection baffle plate, protects baffle plate
Constituted to the C-shaped pipes set of side from being welded on the every heat exchanger tube of the 3rd superheater 6 flue gas, C-shaped pipes set passes through its cavity bag
Wrap the side (flue gas comes to side) of heat exchanger tube.C-shaped pipes set can protect heat exchanger tube, can also be lowered into the ash of the second flue
Dust quantity, due to velocity of flue gas reduction, helps to control flue-gas temperature by superheater.
Further to improve the protection effect of protective plate, protective plate is provided with two, and respectively the first protective plate and second prevent
Backplate.
The first protective plate is horizontally fixed with first flue, the second protective plate is horizontally fixed with the second flue.First prevents
At the bottom end outlet of the first flue, the first protective plate is made up of backplate the C-shaped pipes set being arranged side by side, and C-shaped pipes set is fixed side by side
In framework, there is the gap passed through for flue gas between C-shaped pipes set, C-shaped pipes set comes to the first protective plate allows convex surface facing flue gas
Flue gas rapidly slows down in bottom, and the first protective plate can also adsorb dust in itself, allows it substantial amounts of can fall into dust arrester installation, reduces
Amount of dust in second flue,
It is horizontally fixed with the second protective plate in second flue, the 3rd superheater 6 is fixed on the bottom of the second flue, and (flue gas enters
At mouthful), the second protective plate is made up of the C-shaped pipes set being welded on the heat exchanger tube of the 3rd superheater 6, and C-shaped pipes set is located at heat exchanger tube
Bottom, i.e. flue gas to direction, for protecting heat exchanger tube, it is also possible to further reduce the dust intercepted in flue gas, reach double
Weight protection effect.
Because protective plate is made up of the C-shaped pipes set being set up in parallel, the hole passed through for flue gas is provided between C-shaped pipes set, this
The structure of sample helps to slow down flue gas, can also protect heat exchanger tube.Each C-shaped pipes set is uniformly distributed towards flue gas to direction
There is recess structure (in numb spot distribution), i.e., be provided with recess structure in the outer surface of C-shaped pipes set, C-shaped pipes set is preferably used
Flexible steel bar makes, and by sunk structure, can increase the effect of C-shaped pipes set absorption dust and improve C-shaped pipes set reduces flue gas
The effect of flow velocity, and coordinate the flexible characteristic that C-shaped pipes cover, each C-shaped pipes are enclosed within the presence of flue gas blows, C-shaped pipes set meeting
Occur from shaking, the dust cake that will automatically can be adsorbed on C-shaped pipes set is shaken off in the dust arrester installation of lower section, with one
Fixed self purification, is provided with the rapping apparatus for beaing protective plate edge, in addition by the first protective plate and the second protective plate
Vibrations transmission bar can be welded between the C-shaped pipes set of two protective plates, is capable of the dust structure put to the C-shaped pipes cleaning of active.
Main feed system scope be by the water supplying tank import of the delivery port of oxygen-eliminating device 9 to waste heat boiler incinerator economizer,
Waste heat boiler main feed system sets two feed pumps altogether, the using and the reserved, and using VFC, every feed pump is exerted oneself about
The 110% of separate unit boiler capacity, feedwater pump discharge is provided with recirculation pipe to middle pressure oxygen-eliminating device 9, and boiler feedwater pump operation has most
Low discharge requirement, when boiler replenishing water reduction or load reduction, to ensure that boiler feed pump normally runs, sets boiler feed pump
Minimum discharge interlock.
Specifically as shown in figure 3, the water storage cavity 10 of oxygen-eliminating device 9 is exported connects waste heat boiler through main water supply pipe, along main water supply
Pipeline water flow direction is sequentially provided with main water supply valve, feed pump 14 and main throttle plate aperture, and auxiliary water supply line is connected to main feed water valve
On main water supply pipe before door, auxiliary water supply line supplies water through auxiliary restricting orifice 11, three-way valve to oxygen-eliminating device 9, three-way valve
One of path supplies water through auxiliary water pump 13 to waste heat boiler, is preferably supplied simultaneously to the input and output side of main throttle orifice plate 12
Water, and it is equipped with check valve on main water supply pipe and auxiliary water supply line.
In order to avoid flow impacts greatly very much to pipeline, the output end of auxiliary water pump 13 is connected respectively through having valvular two pipelines
The input and output side of main throttle orifice plate 12.Valve coordinates auxiliary restricting orifice 11 to ensure boiler feed pump safe and reliable operation.
Supplied water in order to Automated condtrol, the water feed inlet of waste heat boiler is provided with flowmeter, measure flow less than boiler
During Minimum Flowrate of Feed Pump, flowmeter output signal carries out chain feedback to DCS, and auxiliary water pump 13 and valve are opened in control, and are led to
The value of feedback of excessively stream gauge constitutes closed loop.Oxygen-eliminating device 9 is extracted in demineralized water, water storage cavity 10 by supply-water pump and is provided with heater
Structure, heating arrangements are steam heater.
As shown in figure 4, the delivery port of the bottom of jetting case 15 of the jetting case circulatory system connects water-jet pump, water-jet pump through pipeline
The cooling water of output is recycled to jetting case 15 through condenser, constitutes a cooling water circulation loop, and water-jet pump is provided with two points
Not Wei main water-jet pump 3 and auxiliary water-jet pump 18, one jetting pump group can be keeping the vacuum of main condenser during normal operation.In short-term
Between shut down during without blowing out operating mode, two jetting pump groups are all run, to keep the vacuum of main/bypass condenser simultaneously.
To control main water-jet pump 3 and auxiliary water-jet pump 18 to work, main water-jet pump 3 and auxiliary water-jet pump 18 are parallel with one another, and parallel connection is main
Check valve and water check valve are equipped with two pipelines of water-jet pump 3 and auxiliary water-jet pump 18.When halt turbines, main steam passes through
When bypass temperature-decreased pressure reducer enters bypass condenser, steam turbine pumped vacuum systems makes bypass condenser internal pressure power be maintained at about
0.068MPa。
Jetting case 15 is provided with water injection pipe, the industrial grid (providing industrial water 19) of water injection pipe connection on-site.Jetting
The top of case 15 is provided with overfall, overfall by the downward diversion of overflow pipe to spill box 16, water-jet pump normal operating condition,
Water in jetting case 15 can be overflowed, if directly outer row can cause water resource waste, therefore design increases the overflow of jetting case 15
Retracting device.
The water that the overfall of jetting case 15 is overflowed is incorporated into spill box 16 by pipeline, water level is set in water tank and is become
Device is sent, when the water level in water tank reaches high water-level alarm value, the flood pump 20 chain with water level is automatically turned on, and water is transmitted back to
Recycled to cooling tower 21, i.e., spill box 16 is by the pump water of flood pump 20 to cooling tower 21, the conveying of the delivery port of cooling tower 21
Cooling water can utilize the Water Sproading after cooling to jetting case 15.
In order to further control the moisture storage capacity in jetting case 15, and control cooling water temperature, condenser effect is improved, penetrated
Water tank 15 passes through two storage zones of baffle interval being vertically arranged, and the upper, middle and lower position of dividing plate is respectively provided with an intercommunicating pore, both
Water level can be kept identical, the flowing velocity of high temperature and low-temperature space water can be also reduced, cooling tower 21 conveys cooling water to delivery port institute
In low temperature storage zones, water injection pipe is also placed in low temperature storage zones top, reduces the coolant-temperature gage of cooling, and it is cold that water-jet pump is exported
But water makes by there are two different water storage humidity provinces in jetting case 15 to another high temperature storage zones.
In order to realize being provided with level sensor in Automated condtrol, jetting case 15, temperature biography is provided with low temperature storage zones
Sensor, TEMP and level sensor output signal to PLC, and high temperature storage zones bottom is provided with pump mouth, and pump mouth is through taking out
Water pump connects cooling tower 21, and PLC outputs control signals to the electronic valve on suction pump and water injection pipe, so can be excessive in water level
When, by opening electronic valve moisturizing, also can be when temperature be too high, cooling of actively drawing water, and supplement the relatively low industrial water of temperature
19。
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented and do not receive aforesaid way
Limitation, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and design of the invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.
Claims (10)
1. the afterheat boiler system of waste incineration and generating electricity is applied to, main feed system supplies water to economizer, the economizer conveying
To drum, the drum is recycled to drum, the vapour to water after heating after exporting gas-vapor mix to evaporator heating through pipeline
Main steam line is delivered to after bag output steam to superheater heating, the main steam line exports steam to steam turbine power generation,
The steam turbine is provided with the condenser of recovered steam, and master is sequentially provided with along the main water supply pipe water (flow) direction of the main feed system
Water supply valve, feed pump and main throttle plate aperture, water-jet pump extract the water of jetting case through the condensation pipe loopback in the condenser
To jetting case, the jetting case is provided with water injection pipe, and the jetting upper box part is provided with overfall, and the overfall passes through overflow pipe
Downward diversion is to spill box, it is characterised in that：The pipe level of the superheater, evaporator and economizer is arranged on and sets vertically
In the flue put, the superheater is made up of the first superheater, the second superheater and the 3rd superheater that are sequentially connected in series, combustion chamber
The flue collector of top is connected with the first flue top, and the first flue lower section connects with the second flue lower section, and in interconnecting part
Position bottom is provided with mechanism of gathering dust, and first stack base is provided with protection evaporator, and the superheater and evaporator are placed in second
In flue, the economizer is placed in the 3rd flue；Bypass has auxiliary water supply on main water supply pipe before the main water supply valve
Pipeline, the auxiliary water supply line supplies water through auxiliary restricting orifice, three-way valve to oxygen-eliminating device, the one of path of three-way valve
Supplied water to waste heat boiler through auxiliary water pump；The spill box is by flood pump pump water to cooling tower, and the cooling tower delivery port is defeated
Send cooling water to jetting case.
2. the afterheat boiler system for being applied to waste incineration and generating electricity according to claim 1, it is characterised in that：The protection
The side of evaporator is provided with the sootblower nozzle to its heating surface air blast, and the soot blower is connected by being provided with the main pipeline of magnetic valve
The branch pipe of steam source of the gas, the main pipeline and connection main pipeline is provided with nozzle, and the main pipeline is provided with electronic barometer, institute
Electronic barometer output pressure signal is stated to PLC, the PLC outputs control signals to magnetic valve.
3. the afterheat boiler system for being applied to waste incineration and generating electricity according to claim 2, it is characterised in that：The nozzle
It is horizontal flat nozzle, the nozzle inclination sends out high steam to protection evaporator heating surface downwards.
4. the afterheat boiler system for being applied to waste incineration and generating electricity according to claim 3, it is characterised in that：Described first
The influent header of superheater connects the saturated vapor output channel of drum, and the outlet header of first superheater is through the first desuperheat
Device connects the influent header of the second superheater, and the outlet header of second superheater connects the 3rd superheater through the second attemperator
Influent header, the outlet header connection main steam line of the 3rd superheater, second flue sets successively from top to bottom
There are the first superheater, the second superheater and the 3rd superheater.
5. the afterheat boiler system for being applied to waste incineration and generating electricity according to claim 4, it is characterised in that：The main confession
Water system exports heated demineralized water to the first attemperator and the second attemperator, first attemperator and the second attemperator
Electronic flow valve is equipped with water supply line, second superheater is externally provided with the first temperature sensor, the 3rd superheater
Second temperature sensor is externally provided with, first temperature sensor, second temperature sensor output temperature signal are described to PLC
PLC output opening amount signals are adjusted to two electronic flow valves.
6. the afterheat boiler system for being applied to waste incineration and generating electricity according to claim 5, it is characterised in that：Described 3rd
Superheater is provided with protection baffle plate, and the protection baffle plate is from being welded on the C that flue gas on the 3rd every heat exchanger tube of superheater comes to side
Shape pipe sleeve is constituted, and the C-shaped pipes set is flexible steel bar, and the C-shaped pipes set outer surface is evenly distributed with recess structure, the C
Vibrations connection strap is provided between shape pipe sleeve, the C-shaped pipes set edge is provided with the rapping apparatus for beaing protection baffle plate.
7. the afterheat boiler system of waste incineration and generating electricity is applied to according to claim 1 or 5, it is characterised in that：It is described
Oxygen-eliminating device extracts demineralized water by supply-water pump, and the auxiliary water pump output end connects main throttle orifice respectively through having valvular two pipelines
Check valve is equipped with the input and output side of plate, the main water supply pipe and auxiliary water supply line, is provided with the water storage cavity and added
Heat engine structure.
8. the afterheat boiler system for being applied to waste incineration and generating electricity according to claim 1, it is characterised in that：The jetting
It is respectively main water-jet pump and auxiliary water-jet pump that pump is provided with two, and the main water-jet pump and auxiliary water-jet pump are parallel with one another, the master in parallel
Check valve and water check valve are equipped with two pipelines of water-jet pump and auxiliary water-jet pump.
9. the afterheat boiler system for being applied to waste incineration and generating electricity according to claim 8, it is characterised in that：The jetting
Case passes through two storage zones of baffle interval being vertically arranged, and the upper, middle and lower position of the dividing plate is respectively provided with an intercommunicating pore, institute
State cooling tower and convey low temperature storage zones where cooling water to delivery port, the cooling water that the water-jet pump is exported to another high temperature
Storage zones, the water injection pipe is placed in low temperature storage zones top.
10. the afterheat boiler system for being applied to waste incineration and generating electricity according to claim 9, it is characterised in that：It is described to penetrate
Level sensor is provided with water tank, temperature sensor, the TEMP and level sensor are provided with the low temperature storage zones
Device outputs signal to PLC, and high temperature storage zones bottom is provided with pump mouth, and the pump mouth connects cooling tower through suction pump,
The PLC outputs control signals to the electronic valve on suction pump and water injection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611224642.5A CN106678772A (en) | 2016-12-27 | 2016-12-27 | Waste heat boiler system for electricity generation through waste incineration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611224642.5A CN106678772A (en) | 2016-12-27 | 2016-12-27 | Waste heat boiler system for electricity generation through waste incineration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106678772A true CN106678772A (en) | 2017-05-17 |
Family
ID=58871599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611224642.5A Pending CN106678772A (en) | 2016-12-27 | 2016-12-27 | Waste heat boiler system for electricity generation through waste incineration |
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| Country | Link |
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| CN (1) | CN106678772A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107499973A (en) * | 2017-08-03 | 2017-12-22 | 山西潞安煤基合成油有限公司 | Boiler Ash storehouse steam dust removing device |
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| CN101706106A (en) * | 2009-11-26 | 2010-05-12 | 创冠环保(中国)有限公司 | Recovering device for afterheat of garbage incineration furnace |
| CN103672851A (en) * | 2013-12-04 | 2014-03-26 | 湖北双环科技股份有限公司 | Method and equipment for recycling demineralized water of thermal power plant |
| CN204629517U (en) * | 2015-03-26 | 2015-09-09 | 无锡华光锅炉股份有限公司 | Garbage burning boiler |
| CN206347558U (en) * | 2016-12-27 | 2017-07-21 | 安徽海螺川崎工程有限公司 | Novel waste heat boiler system applied to waste incineration and generating electricity |
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2016
- 2016-12-27 CN CN201611224642.5A patent/CN106678772A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706106A (en) * | 2009-11-26 | 2010-05-12 | 创冠环保(中国)有限公司 | Recovering device for afterheat of garbage incineration furnace |
| CN103672851A (en) * | 2013-12-04 | 2014-03-26 | 湖北双环科技股份有限公司 | Method and equipment for recycling demineralized water of thermal power plant |
| CN204629517U (en) * | 2015-03-26 | 2015-09-09 | 无锡华光锅炉股份有限公司 | Garbage burning boiler |
| CN206347558U (en) * | 2016-12-27 | 2017-07-21 | 安徽海螺川崎工程有限公司 | Novel waste heat boiler system applied to waste incineration and generating electricity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107499973A (en) * | 2017-08-03 | 2017-12-22 | 山西潞安煤基合成油有限公司 | Boiler Ash storehouse steam dust removing device |
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