CN206430074U - Water-coal-slurry uphole steam generator - Google Patents
Water-coal-slurry uphole steam generator Download PDFInfo
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- CN206430074U CN206430074U CN201720011662.8U CN201720011662U CN206430074U CN 206430074 U CN206430074 U CN 206430074U CN 201720011662 U CN201720011662 U CN 201720011662U CN 206430074 U CN206430074 U CN 206430074U
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Abstract
The utility model is related to heavy oil wells uphole steam generator technical field, is a kind of water-coal-slurry uphole steam generator；It includes body of heater, upper water-cooling wall, lower water-cooling wall, superheater and air preheater；The flue being inverted U shape is set in body of heater, includes the vertical flue in a left side, the vertical flue in the right side of the horizontal flue of upside and right side in left side；Bottom of furnace body in left vertical flue lower end is provided with left flue slag-drip opening.The utility model reasonable and compact in structure, it is easy to use；The burner that this injection boiler is used makees fuel using water-coal-slurry, will be conveyed to water coal slurry burner again after air preheat by air preheater, it is to avoid stamp out the flames because air themperature is low, improves burning reliability and stability；Combustion residue can also be discharged from slag-drip opening, can continuously be run for a long time, realized and replaced natural gas fuel with coal water slurry fuel, not only cleaning burning, additionally it is possible to energy-saving and emission-reduction；Heat utilization efficiency is high, convenient to carry and transport.
Description
Technical field
The utility model is related to heavy oil wells uphole steam generator technical field, is a kind of water-coal-slurry uphole steam generator.
Background technology
Karamy area in China such as Xinjiang, more based on viscous crude field；Viscous crude have special high viscosity and
High-solidification point characteristic.Current thickened oil recovery generally uses the thermal recovery mode of steam soak；Steam soak is exactly first to be noted to oil well
250 to 350 DEG C of high temperature and high pressure steams, are heated oil reservoir and crude oil in the quite distance of near wellbore zone, the heating so formed
Viscosity of crude reduction in band, the resistance that crude oil flows to shaft bottom is greatly reduced, oil yield increase, is a kind of very effective increase
Heavy oil wells throughput method；In thermal process, high temperature and high pressure steam is by special injection boiler heating, it is common to use be combustion
Gas injection boiler；But with the influence of the factors such as the limited and growing price of natural gas consumption, there is use and be limited,
The problem of cost is high；Therefore, it is imperative to seek new alternative fuel；Through being found in the investigation to power station, domestic at present
Many power stations all in the generation oily coal based fluid fuel using a kind of water-coal-slurry, its have low stain, high efficiency, can pipeline
Feature, solves the problem of existing using natural gas；But injection boiler quantity at present, by fuel of water-coal-slurry is few, its
In, the transformation for once to 23t/h fuel oils steam-injected boiler use water-coal-slurry in Liaohe Oil Field in 2001 has carried out continuous burning examination
Test, although cool water mixture burning success, but because burner hearth can not slag tap, it is impossible to long-term continuous operation, easily fire extinguishing, proves an abortion；
After this, coal water slurry fuel injection boiler is also researched and developed in domestic each oil field, but generally existing heat utilization efficiency is low, and energy waste is tight
Weight, and the problem of air pollution.
The content of the invention
The utility model provides a kind of water-coal-slurry uphole steam generator, overcomes the deficiency of above-mentioned prior art, its energy
Effectively solve the coal water slurry fuel injection boiler known at present, it is impossible to for a long time the problem of continuous operation.
The technical solution of the utility model is realized by following measures：A kind of water-coal-slurry uphole steam generator, bag
Include body of heater, upper water-cooling wall, lower water-cooling wall, superheater and air preheater；Set the flue being inverted U shape in body of heater, including left side
Left vertical flue, the vertical flue in the right side of the horizontal flue of upside and right side；Bottom of furnace body in left vertical flue lower end is provided with a left side
Flue slag-drip opening；Provided with the stable burning room communicated therewith on the body of heater of the lower left side of left vertical flue, the furnace wall at stable burning room
It is provided with burner mounting hole；Lower water cooling is installed with inboard wall of furnace body in left vertical flue bottom corresponding with stable burning room
Wall；Water-cooling wall, lower water cooling wall outlet and upper water-cooling wall import are installed with the inboard wall of furnace body on left vertical flue top
It is connected；At least one superheater is installed with horizontal flue；At least one is installed with right vertical flue
Air preheater；Bottom of furnace body in the lower end of right vertical flue is provided with right flue slag-drip opening.
Here is the further optimization and/or improvements to above-mentioned utility model technical scheme：
Above-mentioned right vertical the interior of flue is installed with least one economizer.
Above-mentioned economizer is two, is high-temperature economizer and low-level (stack-gas) economizer respectively, high-temperature economizer is fixedly mounted on the right side
In the top of vertical flue；Low-level (stack-gas) economizer is fixedly mounted in the bottom of right vertical flue；Air preheater is two, respectively
For main air preheater and secondary air preheater, the right side that secondary air preheater is fixedly mounted on the downside of low-level (stack-gas) economizer is erected
In straight flue, in the vertical flue in the right side that secondary air preheater is fixedly mounted between high-temperature economizer and low-level (stack-gas) economizer.
Denitrification apparatus can be installed with above-mentioned left vertical flue.
Above-mentioned denitrification apparatus can use SCR denitration device.
Said burner mounting hole can be at least two；Or/and, horizontal plate hangs fixation to the pipeline of lower water-cooling wall from bottom to top
On the preceding furnace wall of lower portion of furnace body, right furnace wall and rear furnace wall；Horizontal plate extension is fixed on body of heater to the pipeline of upper water-cooling wall from bottom to top
On surrounding furnace wall.
The left ash bucket of back taper, left flue row can be fixed with the body of heater of above-mentioned stable burning room bottom and left vertical flue bottom
Cinder notch is located at the bottom of left ash bucket；The right ash bucket of back taper, right flue deslagging are fixed with the body of heater of right vertical flue bottom
Mouth is located at the bottom of right ash bucket；Or/and, it is installed with respectively at least in left vertical flue, horizontal flue and right vertical flue
One soot blower.
Above-mentioned body of heater can be skid-mounted type body of heater；Or/and, body of heater is assembly module formula body of heater, including stable burning room and a left side are perpendicular
The module one of straight flue lower section, the module two of left vertical flue upper segment, horizontal flue section and right vertical flue upper lateral section
Module three, denitrification apparatus pacifies the module four for turning section, the module five of economizer construction section and the module six of air preheater construction section；
Module one, module two, module three, module four, module five and module six are fixedly installed togather by connecting pipe.
The utility model reasonable and compact in structure, it is easy to use；This injection boiler makees fuel using water-coal-slurry, passes through air
Preheater will be conveyed to water coal slurry burner again after air preheat, it is to avoid be stamped out the flames because air themperature is low, and improving burning can
By property and stability；Combustion residue can also be discharged from slag-drip opening, can continuously be run for a long time, and realization is replaced with coal water slurry fuel
Natural gas fuel, not only cleaning burning, additionally it is possible to energy-saving and emission-reduction；In addition, lead on entering before water-cooling wall and lower water-cooling wall
Economizer preheating is crossed, goes out upper water-cooling wall with the dry saturated steam after lower water-cooling wall and is heated through superheater, heat utilization efficiency is high；And stove
Body uses skid and assembly module formula, convenient to carry and transport.
Brief description of the drawings
Accompanying drawing 1 is the main view cross section structure diagram of the utility model most preferred embodiment.
Coding in accompanying drawing is respectively：1 is body of heater, and 2 be left ash bucket, and 3 be secondary air preheater, and 4 be that main air is pre-
Hot device, 5 be left flue slag-drip opening, and 6 be stable burning room, and 7 be burner mounting hole, and 8 be lower water-cooling wall, and 9 be upper water-cooling wall, and 10 were
Hot device, 11 be right ash bucket, and 12 be right flue slag-drip opening, and 13 be high-temperature economizer, and 14 be denitrification apparatus, and 15 be low-level (stack-gas) economizer,
16 be horizontal flue.
Embodiment
The utility model is not limited by following embodiments, can according to the technical solution of the utility model and actual conditions come
Determine specific embodiment.
In the utility model, for the ease of description, the description of the relative position relation of each part is according to specification
The Butut mode of accompanying drawing 1 is described, such as：The position relationship of upper and lower, left and right etc. is the Butut according to Figure of description 1
Direction is determined.
The utility model is further described with reference to embodiment and accompanying drawing：
As shown in Figure 1, the water-coal-slurry uphole steam generator includes body of heater 1, upper water-cooling wall 9, lower water-cooling wall 8, superheater
10 and air preheater；The flue being inverted U shape is set in body of heater 1, includes a left side vertical flue, the and of horizontal flue 16 of upside in left side
The vertical flue in the right side on right side；Left flue slag-drip opening 5 is provided with the bottom of body of heater 1 of left vertical flue lower end；In left vertical flue
The body of heater 1 of lower left side is provided with the stable burning room 6 communicated therewith, and burner mounting hole 7 is provided with the furnace wall at stable burning room 6；With
Lower water-cooling wall 8 is installed with inboard wall of furnace body in the corresponding left vertical flue bottom of stable burning room 6；On left vertical flue top
Inboard wall of furnace body on be installed with water-cooling wall 9, the lower outlet of water-cooling wall 8 is connected with the upper import of water-cooling wall 9；In horizontal flue
At least one superheater 10 is installed with 16；At least one air preheater is installed with right vertical flue；
The bottom of body of heater 1 of the lower end of right vertical flue is provided with right flue slag-drip opening 12.
Wherein, described upper water-cooling wall 9 and described lower water-cooling wall 8 are using existing known water wall structure, water cooling
Wall construction is the main heated portion of boiler, and it is formed by the row's of number fastener for connection, can absorb left vertical flue high temperature flue gas
Radiations heat energy, steam or hot water are produced in pipe, and reduce temperature of furnace wall, protect furnace wall；
Steam in body of heater 1 can be further heated to from saturation temperature known to the described use of superheater 10 is existing
The part of overtemperature；
Described air preheater is come the heat exchanger of preheated burning air using the flue gas heat in body of heater 1；
First, steam heating circulation system is set up；The water inlet end of economizer is first passed through into pipeline and originally water feeder
Connection, the water side of economizer is connected by pipeline with the water inlet end of lower water-cooling wall 8, in the water separator of the peripheral hardware of body of heater 1,
The water side of upper water-cooling wall 9 and the import of water separator are connected, and steam (vapor) outlet and the superheater 10 of water separator connect
Connect；The steam output end of superheater 10 is connected by main steam valve with underground gas injection pipe road；
Secondly, hot-air combustion-supporting system is set up；The outer installation water coal slurry burner of body of heater 1 at burner mounting hole 7, will
The outlet side of air preheater is connected with the supply end of water coal slurry burner by connecting tube；
In use, supplying water to steam heating circulation system by originally water feeder first, enable water to add in steam
Circulation is got up in heat circulating system；Then water coal slurry burner is restarted, the combustion flame of water coal slurry burner sprays into stable burning room 6
Interior to burn and produce high-temperature flue gas, high-temperature flue gas is successively through left vertical flue, horizontal flue 16 to right vertical flue, along with temperature
Degree gradually successively decreases, and forms main heating section, the superheat section of horizontal channel, the convection section of right vertical flue and the right side of left vertical flue
The preheating section of vertical flue bottom；Main heating section temperature highest, the upper water-cooling wall 9 of arrangement and lower water-cooling wall 8, can effectively absorb
Hyperpyrexia, enables the water in lower water-cooling wall 8 to heat rapidly, and generation steam or hot water in pipe；With the rising of high-temperature flue gas
Into horizontal flue 16, the section is superheat section；Superheater 10 is installed here, can be effectively using the heat overheated here to logical
Cross dry saturated steam and carry out overheat heating into superheater；High-temperature flue gas enters right vertical flue, the high-temperature flue gas after with
Its original inner air contacts and produces convection current, although convection current can decline high-temperature flue-gas, can still keep certain
Temperature, the section be convection section；High-temperature flue gas is continued traveling downwardly to right vertical flue bottom, and heat, which may proceed to loss, to be present necessarily
Waste heat, the section is preheating section；The air preheater installed in convection section or preheating section, can exist using preheating section or convection section
Heat to cold air heat, be then delivered to burner through connecting tube again, enable the water-coal-slurry and hot-air in burner
Contact and burn, it is to avoid stamped out the flames because air themperature is low, improve burning reliability and stability；Burning in body of heater 1 is given up
Material can also be discharged from slag-drip opening, be further ensured that this injection boiler can continuously be run for a long time, and realization is taken with coal water slurry fuel
For natural gas fuel, not by using limiting, cost is low.
Above-mentioned water-coal-slurry uphole steam generator can be made further optimization and/or improvements according to actual needs：
As shown in Figure 1, it is installed with least one economizer in right vertical flue.Pacify in right vertical flue
Economizer is filled, economizer can be preheated to the water for initially entering steam heating circulation system from originally water feeder, so
High-temperature heating is carried out by pipeline to lower water-cooling wall 8 and upper water-cooling wall 9 again afterwards；Heat utilization efficiency can not only be so improved, also
Evaporating capacity can be increased, it is more energy efficient efficient.
As shown in Figure 1, economizer is two, is high-temperature economizer 13 and low-level (stack-gas) economizer 15, high-temperature economizer respectively
13 are fixedly mounted in the top of right vertical flue；Low-level (stack-gas) economizer 15 is fixedly mounted in the bottom of right vertical flue；Air
Preheater is two, respectively main air preheater 4 and secondary air preheater 3, and secondary air preheater 3 is fixedly mounted on
In the vertical flue in the right side of the downside of low-level (stack-gas) economizer 15, secondary air preheater 3 is fixedly mounted on high-temperature economizer 13 and saved with low temperature
In the vertical flue in the right side between coal device 15.
Low-level (stack-gas) economizer 15 is with high-temperature economizer 13 by placed in series, and high-temperature economizer 13 is located at right vertical flue top
Convection section, low-level (stack-gas) economizer 15 is located at the preheating section of right vertical flue bottom, enters steam heating from originally water feeder
After the water of the circulatory system first carries out tentatively preheating through low-level (stack-gas) economizer 15, then entered by pipeline pre- again in high-temperature economizer 13
Heat, the mode of this double preheatings, it is possible to increase pre-heat effect；Main air preheater 4 passes through gas with secondary air preheater 3
Tandem, secondary air preheater 3 because installation site is higher than the secondary air in main air preheater 4, therefore body of heater 1
The high-temperature flue-gas of preheater 3 is high compared with the temperature of main air preheater 4, and cold air enters after main air preheater 4 again
Enter secondary air preheater 3 through gas passage, realize the Dual heat exchange to cold air, improve the air efficiency of heating surface；To sum up, it is right
Double preheating structures of water and can be effective to the double heat exchanging structure of cold air utilization high-temperature flue gas heat, further improve
Heat utilization efficiency, more efficient energy-saving.
As shown in Figure 1, it is installed with denitrification apparatus 14 in left vertical flue.Denitrification apparatus 14 can handle high temperature cigarette
Nitrogen oxides in gas, it is to avoid discharged nitrous oxides reduce pollution into air.
As shown in Figure 1, denitrification apparatus 14 uses SCR denitration device.SCR denitration device also known as SCR skill
Art denitrification apparatus, it can further improve the denitration efficiency of flue gas in this injection boiler.
As shown in Figure 1, burner mounting hole 7 is at least two.It can be pacified on combustion chamber by least two burners
Hole 7 is filled, while installing multiple gas（Water-coal-slurry and natural gas）Dual burner, or, multiple slurry oil（Water-coal-slurry and oil）Dual-purpose combustion
Burner, or, slurry gas dual burner and the oily dual burner combination of slurry are installed, and can so be improved the smoke of high-temperature flue gas, be entered one
Step improves heat.
As shown in Figure 1, horizontal plate hangs preceding furnace wall, the right side for being fixed on the bottom of body of heater 1 to the pipeline of lower water-cooling wall 8 from bottom to top
On furnace wall and rear furnace wall；Horizontal plate extension is fixed on the surrounding furnace wall of body of heater 1 pipeline of upper water-cooling wall 9 from bottom to top.Under such
The pipeline diameter of water-cooling wall 8 and upper water-cooling wall 9 is big, path length, improves high-heating radiation duration, the lower water-cooling wall 8 of increase and upper water cooling
The vaporization effect of the reclaimed water of wall 9.
As shown in Figure 1, the left ash of back taper is fixed with the body of heater 1 of the bottom of stable burning room 6 and left vertical flue bottom
Bucket 2, left flue slag-drip opening 5 is located at the bottom of left ash bucket 2；The right side of back taper is fixed with the body of heater 1 of right vertical flue bottom
Ash bucket 11, right flue slag-drip opening 12 is located at the bottom of right ash bucket 11.The left ash bucket 2 of back taper and the right ash bucket 11 of back taper are played
The effect of ash is led, ash discharge effect is improved.
As needed, for convenience of clearing up flue heavy grey, divide in left vertical flue, horizontal flue 16 and right vertical flue
At least one soot blower is not installed with.
As needed, move and dismount for convenience of body of heater 1, body of heater 1 is skid-mounted type body of heater.
As needed, for convenience of the transport of body of heater 1, body of heater 1 is assembly module formula body of heater, including stable burning room 6 and a left side are perpendicular
The module one of straight flue lower section, the module two of left vertical flue upper segment, 16 sections of horizontal flue and right vertical flue upper lateral section
Module three, denitrification apparatus 14, which is pacified, turns the module four of section, the module five of economizer construction section and the mould of air preheater construction section
Block six；Module one, module two, module three, module four, module five and module six are fixedly installed togather by connecting pipe.Remove
The module assembling mode mentioned in above-mentioned assembly module formula body of heater 1, can also be according to actual conditions swap modules quantity, to meet
It is readily transported the demand of dismounting.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger adaptability and optimal implementation
Effect, can increase and decrease non-essential technical characteristic according to actual needs, to meet the demand of different situations.
Claims (10)
1. a kind of water-coal-slurry uphole steam generator, it is characterised in that including body of heater, upper water-cooling wall, lower water-cooling wall, superheater and sky
Air preheater；The flue being inverted U shape is set in body of heater, includes the right side of a left side vertical flue, the horizontal flue of upside and right side in left side
Vertical flue；Bottom of furnace body in left vertical flue lower end is provided with left flue slag-drip opening；In the stove of the lower left side of left vertical flue
Body is provided with the stable burning room communicated therewith, and burner mounting hole is provided with the furnace wall at stable burning room；A left side corresponding with stable burning room
Lower water-cooling wall is installed with inboard wall of furnace body in vertical flue bottom；It is fixed on the inboard wall of furnace body on left vertical flue top
Water-cooling wall is installed, lower water cooling wall outlet is connected with upper water-cooling wall import；At least one is installed with horizontal flue
Individual superheater；At least one air preheater is installed with right vertical flue；Body of heater in the lower end of right vertical flue
Bottom is provided with right flue slag-drip opening.
2. water-coal-slurry uphole steam generator according to claim 1, it is characterised in that the interior fixed installation of right vertical flue
There is at least one economizer.
3. water-coal-slurry uphole steam generator according to claim 2, it is characterised in that economizer is two, is high temperature respectively
Economizer and low-level (stack-gas) economizer, high-temperature economizer are fixedly mounted in the top of right vertical flue；Low-level (stack-gas) economizer is fixedly mounted
In the bottom of right vertical flue；Air preheater is two, respectively main air preheater and secondary air preheater, two
Level air preheater is fixedly mounted in the vertical flue in the right side on the downside of low-level (stack-gas) economizer, and secondary air preheater is fixedly mounted on height
In the vertical flue in the right side between warm economizer and low-level (stack-gas) economizer.
4. the water-coal-slurry uphole steam generator according to claim 1 or 2 or 3, it is characterised in that fixed in left vertical flue
Denitrification apparatus is installed.
5. water-coal-slurry uphole steam generator according to claim 4, it is characterised in that denitrification apparatus is filled using SCR denitration
Put.
6. the water-coal-slurry uphole steam generator according to claim 1 or 2 or 3 or 5, it is characterised in that burner mounting hole is
At least two；Or/and, the pipeline of lower water-cooling wall from bottom to top horizontal plate hang the preceding furnace wall for being fixed on lower portion of furnace body, right furnace wall and
Afterwards on furnace wall；Horizontal plate extension is fixed on body of heater surrounding furnace wall the pipeline of upper water-cooling wall from bottom to top.
7. water-coal-slurry uphole steam generator according to claim 4, it is characterised in that burner mounting hole is at least two；
Or/and, horizontal plate extension is fixed on the preceding furnace wall of lower portion of furnace body, right furnace wall and rear furnace wall the pipeline of lower water-cooling wall from bottom to top；
Horizontal plate extension is fixed on body of heater surrounding furnace wall the pipeline of upper water-cooling wall from bottom to top.
8. the water-coal-slurry uphole steam generator according to claim 1 or 2 or 3 or 5 or 7, it is characterised in that stable burning room bottom
With the left ash bucket that back taper is fixed with the body of heater of left vertical flue bottom, left flue slag-drip opening is located at the bottom of left ash bucket；
The right ash bucket of back taper is fixed with the body of heater of right vertical flue bottom, right flue slag-drip opening is located at the bottom of right ash bucket；Or/
Be installed with least one soot blower respectively in left vertical flue, horizontal flue and right vertical flue.
9. water-coal-slurry uphole steam generator according to claim 8, it is characterised in that stable burning room bottom and left vertical flue
The left ash bucket of back taper is fixed with the body of heater of bottom, left flue slag-drip opening is located at the bottom of left ash bucket；At right vertical flue bottom
The right ash bucket of back taper is fixed with the body of heater at end, right flue slag-drip opening is located at the bottom of right ash bucket；Or/and, left vertical flue,
At least one soot blower is installed with respectively in horizontal flue and right vertical flue.
10. the water-coal-slurry uphole steam generator according to claim 1 or 2 or 3 or 5 or 7 or 9, it is characterised in that body of heater is
Skid-mounted type body of heater；Or/and, body of heater is assembly module formula body of heater, includes the module one of stable burning room and left vertical flue lower section,
The module three of the module two of left vertical flue upper segment, horizontal flue section and right vertical flue upper lateral section, denitrification apparatus peace turns section
Module four, the module five of economizer construction section and the module six of air preheater construction section；Module one, module two, module three,
Module four, module five and module six are fixedly installed togather by connecting pipe.
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| CN201720011662.8U CN206430074U (en) | 2017-01-05 | 2017-01-05 | Water-coal-slurry uphole steam generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642045A (en) * | 2017-01-05 | 2017-05-10 | 中国石油天然气集团公司 | Water-coal-slurry steam injection boiler in oilfields |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642045A (en) * | 2017-01-05 | 2017-05-10 | 中国石油天然气集团公司 | Water-coal-slurry steam injection boiler in oilfields |
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