CN109631049A - A kind of control system that refuse furnace First air reheats - Google Patents
A kind of control system that refuse furnace First air reheats Download PDFInfo
- Publication number
- CN109631049A CN109631049A CN201910131149.6A CN201910131149A CN109631049A CN 109631049 A CN109631049 A CN 109631049A CN 201910131149 A CN201910131149 A CN 201910131149A CN 109631049 A CN109631049 A CN 109631049A
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- Prior art keywords
- air
- steam
- heater
- electric heater
- temperature
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- 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.)
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Links
- 230000001172 regenerating effect Effects 0.000 claims abstract description 27
- 238000005485 electric heating Methods 0.000 claims abstract description 15
- 238000000605 extraction Methods 0.000 claims abstract description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims 1
- 208000011580 syndromic disease Diseases 0.000 abstract description 14
- 239000010813 municipal solid waste Substances 0.000 abstract description 9
- 239000000295 fuel oil Substances 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003818 cinder Substances 0.000 description 2
- 238000006392 deoxygenation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/10—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/20—Supplementary heating arrangements using electric energy
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses the control systems that a kind of refuse furnace First air reheats, including electric heater and First air steam regenerative air heater, the electric heater outlet side is connected with fire grate lower part ash bucket, the First air steam regenerative air heater upper end is equipped with electric heater, the First air steam regenerative air heater is by being connected with level-one steam extraction from steam turbine from steam turbine level-one steam main pipe, the First air steam regenerative air heater bottom end is connected with primary air fan, the primary air fan is connected with dump pit top air inlet, the electric heater includes fixed plate, pull rod, electric heating tube, tube sheet, temperature tube and terminal box, the side of the electric heating tube is equipped with terminal box, the terminal box is connected with temperature control cabinet.This system heats First air using high-power electric heater, the wind-warm syndrome of controllable boiler First air, make Stabilization Incineration for Garbage Incinerator, solves the problems, such as the burning not easy to control greatly of the big caused furnace temperature fluctuation of refuse thermal value fluctuation and furnace temperature low consumption great amount of fuel oil to stablize furnace temperature.
Description
Technical field
The present invention relates to the control systems that technical field of combustion equipment more particularly to a kind of refuse furnace First air reheat.
Background technique
Since house refuse universal water content in China's is high, cinder content is high, calorific value is low, especially Chinese north and south climate difference
Greatly, there are also the imbalances of each place economic development, and there are biggish difference for the calorific value of house refuse.Especially north of China,
Winter, spring, since temperature is low, ash content is big (most places are dry and daily life still generallys use fire coal).On mountain
Eastern Heze City Yuncheng County MSW Incineration Plant project, since winter-spring season refuse thermal value is low, low (cinder content reaches temperature
45%, calorific value reaches -10 DEG C in 4000kJ/kg or so, the lowest temperature), and the normal burning disposal heat of the rubbish of boiler producer design
Value range is 4180~9200kJ/kg, therefore is because of the reduction of refuse thermal value and temperature in the March in annual November to next year
Guarantee the stable qualified discharge with flue gas of the ignition temperature of boiler, it has to which a large amount of oil of throwing are combustion-supporting, although can guarantee to fire in this way
Room exit gas temperature is burnt higher than 850 DEG C or more and the residence time is greater than 2 seconds (" consumer waste incineration contamination control standard "
GB18485-2014), but it is difficult to ensure the full combustion of rubbish and clinker ignition loss≤5% of clinker, and can consumes big
The fuel oil of amount leads to the waste of resource and influences the economic benefit in power plant, at present in country's refuse-burning plant actual motion, still
The operation of waste incinerator cannot be stablized, to ensure flue gas qualified discharge.
Summary of the invention
The purpose of the present invention is to provide the control systems that a kind of refuse furnace First air reheats, and have control wind-warm syndrome, save
About resource the characteristics of, solve the problems of the prior art.
To achieve the above object, the invention provides the following technical scheme: the control system that a kind of refuse furnace First air reheats
System, including electric heater and First air steam regenerative air heater, the First air steam regenerative air heater upper end are connected with
Saturated vapor machine comes from drum, and the electric heater outlet side is connected with fire grate lower part ash bucket, the First air steam-type air
Preheater upper end is equipped with electric heater, and the First air steam regenerative air heater from steam turbine level-one steam main pipe by connecting
There is level-one steam extraction to be connected with from the middle part of steam turbine, the First air steam regenerative air heater by the hydrophobic main pipe of low pressure to deoxygenation
Device, the First air steam regenerative air heater lower end is connected with by high pressure draining main pipe to pressure hydrophobic development unit, described
First air steam regenerative air heater bottom end is connected with primary air fan, and the primary air fan is connected with dump pit top air inlet,
The electric heater includes fixed plate, pull rod, electric heating tube, tube sheet, temperature tube and terminal box, and the electric heating tube two sides are equipped with
Pull rod, the pull rod both ends are connected with fixed plate and tube sheet, are equipped with temperature tube, the electricity in the middle part of one end of the electric heating tube
The side of heating tube is equipped with terminal box, and the terminal box is connected with temperature control cabinet.
Preferably, fire grate lower part ash bucket is divided into upper and lower part, and is arranged with first row and secondary series.
Preferably, between the primary air fan and dump pit top air inlet, between fire grate lower part ash bucket and electric heater
It is equipped with combination air door.
Preferably, the temperature control cabinet connects electric heater by connecting terminal, and temperature control cabinet includes overtemperature alarm
Instrument, temperature control instrument, triggering instrument, cooling fan and user's remote cabling end.
Preferably, power supply indicator, run indicator, overtemperature alarm lamp, heating control are equipped with outside the temperature control cabinet
Button, divide-shut brake and local long-range switch processed.
Compared with prior art, beneficial effects of the present invention are as follows:
The control system that refuse furnace First air of the invention reheats, on the basis of an original wind-warm syndrome, investment is certain
The electric heater of power, wind-warm syndrome can further increase, it is ensured that stable operation of the boiler, flue gas qualified discharge are run in two furnaces, one machine
In the case of (winter, January), First air air quantity is 50000m3/h, and at 200 DEG C of wind-warm syndrome, the electricity of 4 groups of 50KW is put into 1# boiler
After heater, First air wind-warm syndrome can quickly increase about 15 DEG C (10 minutes or so), can be increased according to First air uninterrupted
The variation of the power of powered down heater, i.e. furnace temperature is quickly adjusted Power operation temperature, is prevented using SCR control output power
Boiler low-temperature and overtemperature influence flue gas emission index and boiler operatiopn period, configure corresponding protection, interlocking and PLC control,
Realize a distant place and local operation, it is ensured that heater safe and stable operation, wherein First air is heated using high-power electric heater, it can
The wind-warm syndrome for controlling boiler First air makes Stabilization Incineration for Garbage Incinerator, and it is big to solve the big caused furnace temperature fluctuation of refuse thermal value fluctuation
Burning not easy to control and furnace temperature low consumption great amount of fuel oil are come the problem of stablizing furnace temperature.
Detailed description of the invention
Fig. 1 is systematic schematic diagram of the invention；
Fig. 2 is electric heater structure figure of the invention；
Fig. 3 is temperature control cabinet electrical schematic diagram of the invention；
Fig. 4 is electric heater and temperature control cabinet catenation principle figure of the invention；
Fig. 5 is terminals subgraph of the invention；
Fig. 6 is temperature control cabinet outside drawing of the invention.
In figure: 1, level-one steam extraction is from steam turbine；2, from steam turbine level-one steam main pipe；3, First air steam regenerative air heater；
4, electric heater；41, fixed plate；42, pull rod；43, electric heating tube；44, tube sheet；45, temperature tube；46, terminal box；5, steam-type
The hydrophobic main pipe of air preheater low pressure；6, steam regenerative air heater high pressure draining main pipe；7, pressure hydrophobic development unit；8, deoxygenation
Device；9, primary air fan；10, dump pit top air inlet；11, fire grate lower part ash bucket；12, saturated vapor machine comes from drum；13, warm
Spend control cabinet；14, local long-range switch；15, overtemperature alarm lamp；16, run indicator；17, divide-shut brake；18, computer heating control
Button；19, power supply indicator；20, cooling fan；21, user's remote cabling end；22, temperature control instrument；23, overtemperature alarm
Instrument；24, instrument is triggered；25, connecting terminal.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-6, a kind of control system that refuse furnace First air reheats, including electric heater 4 and First air is please referred to steam
Vapour regenerative air heater 3,3 upper end of First air steam regenerative air heater are connected with saturated vapor machine from drum 12, electric heating
4 outlet side of device is connected with fire grate lower part ash bucket 11, and the First air after heating enters fire grate lower part ash bucket 11, fire grate lower part ash bucket 11
It is divided into upper and lower part, and is arranged with first row and secondary series, 3 upper end of First air steam regenerative air heater is equipped with electric heating
Device 4, First air steam regenerative air heater 3 is by being connected with level-one steam extraction from steam turbine 1, once from steam turbine level-one steam main pipe 2
It is connected with by the hydrophobic main pipe 5 of steam regenerative air heater low pressure to oxygen-eliminating device 8 in the middle part of wind steam regenerative air heater 3, once
3 lower end of wind steam regenerative air heater is connected with by steam regenerative air heater high pressure draining main pipe 6 to pressure dewatering capacity-enlarging
Device 7,3 bottom end of First air steam regenerative air heater are connected with primary air fan 9, primary air fan 9 and dump pit top air inlet 10
Between, combination air door is equipped between fire grate lower part ash bucket 11 and electric heater 4, primary air fan 9 is connected with the suction of dump pit top
Air port 10, electric heater 4 include fixed plate 41, pull rod 42, electric heating tube 43, tube sheet 44, temperature tube 45 and terminal box 46, and electricity adds
43 two sides of heat pipe are equipped with pull rod 42, and 42 both ends of pull rod are connected with fixed plate 41 and tube sheet 44, peace in the middle part of one end of electric heating tube 43
Equipped with temperature tube 45, the side of electric heating tube 43 is equipped with terminal box 46, and terminal box 46 is connected with temperature control cabinet 13, temperature control
Cabinet 13 connects electric heater 4 by connecting terminal 25, and temperature control cabinet 13 includes overtemperature alarm instrument 23, temperature control instrument
22, instrument 24, cooling fan 20 and user's remote cabling end 21 are triggered, be equipped with outside temperature control cabinet 13 power supply indicator 19,
Run indicator 16, overtemperature alarm lamp 15, computer heating control button 18, divide-shut brake 17 and local long-range switch 14.
Working principle: it is done because the main function of domestic waste incineration combustion air First air, Secondary Air is to provide rubbish
Dry air quantity and wind-warm syndrome；The air that rubbish full combustion is provided and is burnt；Reinforce the disturbance of flue gas in burner hearth；Cooling fire grate etc.,
By increasing electric heater 4 in steam-type air preheater outlet, by the wind-warm syndrome of two-stage steam-type air preheater outlet into one
Step improves, and accelerates the speed that rubbish is dried on fire grate, and be more advantageous to the burning of rubbish, it is ensured that boiler combustion temperature and cigarette
Gas qualified discharge.
In summary: the control system that refuse furnace First air of the invention reheats, on the basis of an original wind-warm syndrome,
The electric heater 4 of certain power is put into, wind-warm syndrome can further increase, it is ensured that stable operation of the boiler, flue gas qualified discharge, in two furnaces
Under one machine operating condition (winter, January), First air air quantity is 50000m3/h, at 200 DEG C of wind-warm syndrome, puts into 4 groups to 1# boiler
After the electric heater 4 of 50KW, First air wind-warm syndrome can quickly increase about 15 DEG C (10 minutes or so), can be big according to a wind flow
The variation of the small power for being increased and decreased electric heater 4, i.e. furnace temperature, using SCR control output power, quickly adjusts Power operation
Temperature prevents boiler low-temperature and overtemperature, influences flue gas emission index and boiler operatiopn period, configure corresponding protection, interlock with
And PLC control, realize a distant place and local operation, it is ensured that heater safe and stable operation, wherein being added using high-power electric heater 4
Heat primary air can control the wind-warm syndrome of boiler First air, make Stabilization Incineration for Garbage Incinerator, and it is big caused to solve refuse thermal value fluctuation
Furnace temperature fluctuation burning not easy to control greatly and furnace temperature low consumption great amount of fuel oil are come the problem of stablizing furnace temperature.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. the control system that a kind of refuse furnace First air reheats, including electric heater (4) and First air steam-type air preheat
Device (3), it is characterised in that: First air steam regenerative air heater (3) upper end is connected with saturated vapor machine from drum
(12), electric heater (4) outlet side is connected with fire grate lower part ash bucket (11), the First air steam regenerative air heater
(3) upper end is equipped with electric heater (4), and the First air steam regenerative air heater (3) is by from steam turbine level-one steam main pipe
(2) it is pre- by steam-type air from the middle part of steam turbine (1), the First air steam regenerative air heater (3) to be connected with level-one steam extraction
The hot hydrophobic main pipe of device low pressure (5) is connected with to oxygen-eliminating device (8), and First air steam regenerative air heater (3) lower end passes through steaming
Vapour regenerative air heater high pressure draining main pipe (6) is connected with to pressure hydrophobic development unit (7), and the First air steam-type air is pre-
Hot device (3) bottom end is connected with primary air fan (9), and the primary air fan (9) is connected with dump pit top air inlet (10), the electricity
Heater (4) includes fixed plate (41), pull rod (42), electric heating tube (43), tube sheet (44), temperature tube (45) and terminal box
(46), electric heating tube (43) two sides are equipped with pull rod (42), and pull rod (42) both ends are connected with fixed plate (41) and tube sheet
(44), it is equipped with temperature tube (45) in the middle part of one end of the electric heating tube (43), the side of the electric heating tube (43), which is equipped with, to be connect
Wire box (46), the terminal box (46) are connected with temperature control cabinet (13).
2. the control system that a kind of refuse furnace First air according to claim 1 reheats, it is characterised in that: the fire grate
Lower part ash bucket (11) is divided into upper and lower part, and is arranged with first row and secondary series.
3. the control system that a kind of refuse furnace First air according to claim 1 reheats, it is characterised in that: described primary
Combination is equipped between blower (9) and dump pit top air inlet (10), between fire grate lower part ash bucket (11) and electric heater (4)
Air door.
4. the control system that a kind of refuse furnace First air according to claim 1 reheats, it is characterised in that: the temperature
Control cabinet (13) by connecting terminal (25) connection electric heater (4), temperature control cabinet (13) include overtemperature alarm instrument (23),
Temperature control instrument (22), triggering instrument (24), cooling fan (20) and user's remote cabling end (21).
5. the control system that a kind of refuse furnace First air according to claim 1 reheats, it is characterised in that: the temperature
Power supply indicator (19), run indicator (16), overtemperature alarm lamp (15), computer heating control button are equipped with outside control cabinet (13)
(18), divide-shut brake (17) and local long-range switch (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910131149.6A CN109631049A (en) | 2019-02-22 | 2019-02-22 | A kind of control system that refuse furnace First air reheats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910131149.6A CN109631049A (en) | 2019-02-22 | 2019-02-22 | A kind of control system that refuse furnace First air reheats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109631049A true CN109631049A (en) | 2019-04-16 |
Family
ID=66065676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910131149.6A Pending CN109631049A (en) | 2019-02-22 | 2019-02-22 | A kind of control system that refuse furnace First air reheats |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109631049A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464971A (en) * | 2021-08-12 | 2021-10-01 | 西安热工研究院有限公司 | Air preheating system of garbage incinerator |
| CN114911291A (en) * | 2022-05-07 | 2022-08-16 | 深圳云存科技有限公司 | Intelligent embedded control system of hard disk air preheater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113464971A (en) * | 2021-08-12 | 2021-10-01 | 西安热工研究院有限公司 | Air preheating system of garbage incinerator |
| CN114911291A (en) * | 2022-05-07 | 2022-08-16 | 深圳云存科技有限公司 | Intelligent embedded control system of hard disk air preheater |
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Application publication date: 20190416 |