CN209726219U - 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
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- CN209726219U CN209726219U CN201920230716.9U CN201920230716U CN209726219U CN 209726219 U CN209726219 U CN 209726219U CN 201920230716 U CN201920230716 U CN 201920230716U CN 209726219 U CN209726219 U CN 209726219U
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Abstract
The utility model 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 utility model relates to the control systems that technical field of combustion equipment more particularly to a kind of refuse furnace First air reheat
System.
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, In
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.
Utility model content
The purpose of this utility model is to provide the control systems that a kind of refuse furnace First air reheats, and have control wind
Temperature solves the problems of the prior art the characteristics of economizing on resources.
To achieve the above object, the utility model provides the following technical solutions: a kind of control that refuse furnace First air reheats
System processed, including electric heater and First air steam regenerative air heater, the First air steam regenerative air heater upper end connect
Saturated vapor machine is connected to from drum, 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 is by from steam turbine level-one steam main pipe
Level-one steam extraction is connected with from steam turbine, is connected with by the hydrophobic main pipe of low pressure to removing in the middle part of the First air steam regenerative air heater
Oxygen device, the First air steam regenerative air heater lower end are connected with by high pressure draining main pipe to pressure hydrophobic development unit, institute
It states First air steam regenerative air heater bottom end and is connected with primary air fan, the primary air fan is connected with the air draught of dump pit top
Mouthful, the electric heater includes fixed plate, pull rod, electric heating tube, tube sheet, temperature tube and terminal box, the electric heating tube two sides
Equipped with pull rod, the pull rod both ends are connected with fixed plate and tube sheet, are equipped with temperature tube in the middle part of one end of the electric heating tube, institute
The side for stating electric 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, the beneficial effects of the utility model are as follows:
The control system that the refuse furnace First air of the utility model reheats, on the basis of an original wind-warm syndrome, investment
The electric heater of certain power, wind-warm syndrome can further increase, it is ensured that stable operation of the boiler, flue gas qualified discharge, in two furnaces, one machine
Under operating condition (winter, January), First air air quantity is 50000m3/h, at 200 DEG C of wind-warm syndrome, puts into 4 groups of 50KW to 1# boiler
Electric heater after, First air wind-warm syndrome can quickly increase about 15 DEG C (10 minutes or so), can according to First air uninterrupted into
The power of row increase and decrease electric heater, i.e. furnace temperature change, and using SCR control output power, quickly adjust Power operation temperature,
Boiler low-temperature and overtemperature are prevented, flue gas emission index and boiler operatiopn period are influenced, configures corresponding protection, interlocking and PLC
A distant place and local operation are realized in control, it is ensured that heater safe and stable operation, wherein primary using the heating of high-power electric heater
Wind can control the wind-warm syndrome of boiler First air, make Stabilization Incineration for Garbage Incinerator, solve the big caused furnace temperature wave of refuse thermal value fluctuation
Dynamic big 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 the systematic schematic diagram of the utility model；
Fig. 2 is the electric heater structure figure of the utility model；
Fig. 3 is the temperature control cabinet electrical schematic diagram of the utility model；
Fig. 4 is the electric heater and temperature control cabinet catenation principle figure of the utility model；
Fig. 5 is the terminals subgraph of the utility model；
Fig. 6 is the temperature control cabinet outside drawing of the utility model.
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
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
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 the refuse furnace First air of the utility model reheats, in the base of an original wind-warm syndrome
On plinth, 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,
Under two furnaces, one machine operating condition (winter, January), First air air quantity is 50000m3/h, at 200 DEG C of wind-warm syndrome, is thrown 1# boiler
After the electric heater 4 for entering 4 groups of 50KW, First air wind-warm syndrome can quickly increase about 15 DEG C (10 minutes or so), can be according to First air
Uninterrupted is increased and decreased the power of electric heater 4, i.e. furnace temperature changes, and using SCR control output power, quickly adjusts function
Rate running temperature, prevents boiler low-temperature and overtemperature, influences flue gas emission index and boiler operatiopn period, configure corresponding protection,
It interlocks and PLC is controlled, realize a distant place and local operation, it is ensured that heater safe and stable operation, wherein being added using high-power electricity
Hot device 4 heats First air, can control the wind-warm syndrome of boiler First air, makes Stabilization Incineration for Garbage Incinerator, solves refuse thermal value fluctuation
The burning not easy to control greatly of furnace temperature fluctuation caused by big 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.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
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 |
|---|---|---|---|
| CN201920230716.9U CN209726219U (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 |
|---|---|---|---|
| CN201920230716.9U CN209726219U (en) | 2019-02-22 | 2019-02-22 | A kind of control system that refuse furnace First air reheats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209726219U true CN209726219U (en) | 2019-12-03 |
Family
ID=68683940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920230716.9U Expired - Fee Related CN209726219U (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) | CN209726219U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631049A (en) * | 2019-02-22 | 2019-04-16 | 曾勇 | A kind of control system that refuse furnace First air reheats |
-
2019
- 2019-02-22 CN CN201920230716.9U patent/CN209726219U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631049A (en) * | 2019-02-22 | 2019-04-16 | 曾勇 | A kind of control system that refuse furnace First air reheats |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191203 Termination date: 20210222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |