CN208169996U - Combustion-type water bath type gasifier energy conserving system - Google Patents
Combustion-type water bath type gasifier energy conserving system Download PDFInfo
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- CN208169996U CN208169996U CN201821184011.XU CN201821184011U CN208169996U CN 208169996 U CN208169996 U CN 208169996U CN 201821184011 U CN201821184011 U CN 201821184011U CN 208169996 U CN208169996 U CN 208169996U
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- water
- bath
- deep cooling
- storage tank
- cooling heat
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Abstract
The utility model discloses a kind of combustion-type water bath type gasifier energy conserving system, including burner, water circulating pump and water-bath storage tank；Water level controller, fire tube, smoke pipe and deep cooling heat-exchanging tube bundle are equipped in water-bath storage tank；The burner is connect with the fire tube in the water-bath storage tank, and the fire tube is connected with smoke pipe, and the outlet of smoke pipe is tail gas flue；The deep cooling heat-exchanging tube bundle is located at the top of water-bath storage tank internal fire pipe and smoke pipe；The water level controller is located at the horizontal position of the deep cooling heat-exchanging tube bundle；After the smoke pipe, before tail gas flue, it is equipped with a fin shell-and-tube aftercooler；One end of the water circulating pump is connect with the fin shell-and-tube aftercooler, and the other end is connect with the water-bath storage tank.The utility model structure is simple, the thermal efficiency of combustion-type water bath type gasifier can be effectively improved, especially in the gasifier of continuous operation, reduce operating cost, the icing effect of water-bath gasification heat exchanger is reduced, so that the heat transfer efficiency of heat exchanger is improved, environmental protection and energy saving significant effect.
Description
Technical field
The utility model relates to environmental protection energy-saving fields, and in particular to a kind of combustion-type water bath type gasifier, especially
Combustion-type water-bath type LNG gasification device more particularly to a kind of combustion-type water bath type gasifier energy conserving system.
Background technique
Liquid gas is heated in gasifier until gasification（Become gas）And the equipment of overheat.It briefly, is exactly deeply
Cold liquid gas is by reforming into gaseous gas after " gasifier ".Heating can be indirectly（Combustion-type water-bath type
Gasifier, steam heating water bath formula gasifier, hot water circuit water bath type gasifier, electrical heating type gasifier, solid conductive heat heating
Formula gasifier, submerged combustion gasifier）, it is also possible to direct（Gravity-flow ventilation air-bathing gasifier, the gasification of forced ventilation formula
Device）.
Natural gas is mainly used for power generation, chemical engineering industry, town dweller's combustion gas and industrial combustion gas, motor vehicle fuel etc., other use
Cold energy use including LNG on the way, natural gas strategy lay in needing for safe way.LNG gasifier is kind dedicated for liquid
Change natural gas gasifying heat exchanger, be mainly used in coastal Large LNG receiving station, LNG liquefaction plant, LNG gasification station,
LNG liquid filling station etc., space division factory back-up system equipment for gasification are the key equipments for realizing gasification function.
Combustion-type water bath type gasifier principle is the high-temperature flue gas generated by fuel combustion, heats the centre outside fume pipe
Heating agent, then the deep cooling cryogenic liquid by intermediate heating medium for heating inside heat exchanger（Liquid nitrogen, liquid oxygen, liquefied natural gas）.Burning adds
Hot part is under, low-temperature heat exchange top, and intermediate heating agent temperature difference, density should push up and down, forms free convection, smoke pipe and changes
It conducts heat based on convective heat transfer outside the pipe of hot device, adding circulated water pump can properly increase the heat transfer coefficient outside pipe, but because set
Standby internal diameter is big, and heat transfer coefficient raising is limited, and equipment smog discharge temperature is higher, generally at 120 ~ 140 degree or so.
As shown in Figure 1, the structure of the heating part of traditional combustion-type water bath type gasifier is by water level controller 1, combustion
Burner 2, water circulating pump 3, fire tube and smoke pipe 4, deep cooling heat-exchanging tube bundle 5, temperature controller 6 form.Its exhaust gas temperature heat loss is
5% or so of gross calorific value.The function of burner 2 is ignition, controls its output power by the temperature of water-bath；The fire tube of burning
41 and subsequent smoke pipe 42 calory burning is transmitted in water-bath；Circulating pump 3 reinforces the heat transfer in water-bath storage tank A；Tail gas
It is discharged in atmosphere by tail gas flue 11；The water-bath being heated is by the heat transfer of deep cooling heat-exchanging tube bundle 5 cryogenic liquid gas
Change the output temperature for being heated to need（Temperature controller 6 is for controlling the output temperature）, water level controller 1 is guaranteed in water pot
Water potential submerges deep cooling heat-exchanging tube bundle 5, meets heat exchange demand.
Chinese utility model patent CN2015207397977 discloses a kind of efficient submerged combustion gasifier, this is efficiently
Submerged combustion gasifier has the disadvantage that：
1, patent CN2015207397977 belongs to direct contact heat transfer, is bubbled in water-bath storage tank by flue gas and improves water
The heat transfer coefficient of side, the acidic materials in flue gas, which can be dissolved into water, increases corrosion, increases the operating cost of equipment water process,
And reduce the service life of equipment；
2, patent CN2015207397977 belongs to direct contact heat transfer, and flue gas can take away water in water-bath storage tank, and must
Need continuous moisturizing, water vapor can lose portion of energy.
Traditional burning water bath type gasifier, the exhaust gas temperature of combustion tail gas is higher, and the thermal efficiency is relatively low.It is easy when equipment operation
Ice stone roller is formed, reduces heat exchange efficiency, gas outlet temperature does not reach design value.The row of traditional burning water bath type gasifier
Smoke temperature degree is higher, and the thermal efficiency is relatively low, expends energy, causes the waste significantly of thermal energy.
This field, which needs to research and develop, a kind of can overcome the new of the existing combustion-type water bath type gasifier technological deficiency of above-mentioned tradition
Type combustion-type water bath type gasifier energy conserving system.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of combustion-type water bath type gasifier energy conserving systems, can be effective
The thermal efficiency of combustion-type water bath type gasifier is improved, especially in the gasifier of continuous operation, operating cost is reduced, reduces water-bath gas
The icing effect for changing heat exchanger, to improve the heat transfer efficiency of heat exchanger.
In order to solve the above technical problems, the utility model provides a kind of combustion-type water bath type gasifier energy conserving system, including
Burner, water circulating pump and water-bath storage tank；Water level controller, fire tube, smoke pipe and deep cooling heat exchanger tube are equipped in the water-bath storage tank
Beam；The burner is connect with the fire tube in the water-bath storage tank, and the fire tube is connected with smoke pipe, and the outlet of the smoke pipe is tail
Gas flue；The deep cooling heat-exchanging tube bundle is located at the top of water-bath storage tank internal fire pipe and smoke pipe；The water level controller is located at described
The horizontal position of deep cooling heat-exchanging tube bundle；After the smoke pipe, before tail gas flue, it is equipped with a fin shell-and-tube aftercooler；The circulation
One end of water pump is connect with the fin shell-and-tube aftercooler, and the other end is connect with the water-bath storage tank.
As the preferred technical solution of the utility model, the outlet of the water circulating pump is equipped with spray distributor pipe.
As the preferred technical solution of the utility model, the fin shell-and-tube aftercooler includes multiple heat exchanger tubes and close
Cover the multi-disc heat exchange plate outside the heat exchanger tube.
As the preferred technical solution of the utility model, the spray distributor pipe is arranged in the icing of deep cooling heat-exchanging tube bundle
Section.
As the preferred technical solution of the utility model, the aperture density of the spray distributor pipe and the deep cooling heat exchanger tube
Heat transfer coefficient direct proportionality in beam.
It is thicker for ice sheet in the icing section of the deep cooling heat-exchanging tube bundle as the preferred technical solution of the utility model
Place, it is described spray distributor pipe aperture density it is higher；For the relatively thin place of ice sheet, the aperture of the spray distributor pipe is close
It spends lower.
As the preferred technical solution of the utility model, it is additionally provided with temperature controller in the water-bath storage tank, the temperature control
Device processed is located at the lower section of the deep cooling heat-exchanging tube bundle.
As the preferred technical solution of the utility model, the deep cooling heat-exchanging tube bundle is equipped with liquid gas inlet and overheat
Gas vent.
As the preferred technical solution of the utility model, the liquid gas inlet is located under the deep cooling heat-exchanging tube bundle
Portion, the overheated gas outlet are located at the top of the deep cooling heat-exchanging tube bundle.
Compared with prior art, the beneficial effects of the utility model are：
Using the utility model combustion-type water bath type gasifier energy conserving system, the thermal efficiency, which can be improved, reaches 98% or more,
It can be higher than the thermal efficiency of submerged combustion gasifier by improved burning water bath type gasifier.The utility model is simultaneously
Recirculated water deep cooling tube bank ice field is led into, reducing to freeze influences the heat transfer of deep cooling heat-exchanging tube bundle.
Traditional burning water bath type gasifier installs aftercooler additional because no, so the exhaust gas temperature of combustion tail gas is higher, heat
Efficiency is relatively low.Different icing thickness is not restrained for technique and makes sprinkle density without spray design in water circulating pump outlet
Design adjustment or forced circulation water out be not disposed at icing section, when equipment operation, easily forms ice stone roller, reduces heat exchange
Efficiency, gas outlet temperature do not reach design value.
The utility model can by the thermal efficiency of traditional combustion-type water bath type gasifier from 75% ~ 80%, be increased to 98% with
On, reduce the ice formation issues of traditional water bath gasifier, reduce the operating cost of natural gas consumption, reduces carbon dioxide row
It puts, environmental protection and energy saving significant effect.
Compared with a kind of efficient submerged combustion gasifier disclosed in the patent CN2015207397977, patent
CN2015207397977 belongs to direct contact heat transfer, is bubbled the heat transfer coefficient for improving water side in water-bath storage tank by flue gas, and
The utility model is then to improve the heat transfer coefficient of water side by water circulating pump, and arrange tail gas by fin shell-and-tube aftercooler
Smoke temperature degree and bath temperature are close, improve heat recovery, and the flue gas of the utility model is through in smoke pipe, with the water in water-bath storage tank
Belong to septate heat transfer, flue gas will not change the sour corrosion of water, equipment selection, the available guarantee of service life, without equipment
The operating cost of water process；The utility model avoids patent CN2015207397977 direct contact heat transfer, and flue gas can band
Water in water-bath storage tank is walked, the problem of water vapor can lose portion of energy.
Detailed description of the invention
Fig. 1 is the principle schematic diagram of traditional combustion-type water bath type gasifier.
Fig. 2 is the structural schematic diagram of the utility model combustion-type water bath type gasifier energy conserving system.
Fig. 3 is the structural schematic diagram of the fin shell-and-tube aftercooler of the utility model.
The reference numerals are as follows in figure：
1 is water level controller；2 be burner；3 be water circulating pump；41 be fire tube；42 be smoke pipe；5 be deep cooling heat exchanger tube
Beam；6 be temperature controller；7 be fin shell-and-tube aftercooler；8 be spray distributor pipe；9 be heat exchanger tube；10 be heat exchange plate；11
For tail gas flue；12 be liquid gas inlet；13 export for overheated gas；A is water-bath storage tank.
Specific embodiment
The utility model is furtherd elucidate combined with specific embodiments below, but these embodiments are only intended to illustrate that this is practical
It is novel, rather than to limit the scope of the utility model.
As shown in Fig. 2, the utility model combustion-type water bath type gasifier energy conserving system includes water-bath storage tank A, water circulating pump 3
With burner 2, water-bath storage tank A is interior to be equipped with water level controller 1, fire tube 41 and smoke pipe 42, deep cooling heat-exchanging tube bundle 5, temperature controller
6.Burner 2 is connect with the fire tube 41 in water-bath storage tank A, and fire tube 41 and subsequent smoke pipe 42 connect, and the outlet of smoke pipe 42 is tail
Gas flue 11.The deep cooling heat-exchanging tube bundle 5 is located at the top of water-bath storage tank A internal fire pipe 41 and smoke pipe 42, convenient in water-bath storage tank A
The heat convection of heat exchanger；The function of burner 2 is ignition, controls its output power, burner 2 by the temperature of water-bath
Entrance fuel and combustion air is added；Calory burning is transmitted in water-bath by the fire tube 41 and subsequent smoke pipe 42 of burning；It follows
One end of ring water pump 3 is connect with fin shell-and-tube aftercooler 7, and the other end is connect with water-bath storage tank A；Water circulating pump 3 is for reinforcing
Heat transfer in water-bath storage tank A；Tail gas is discharged in atmosphere by tail gas flue 11；The water-bath being heated passes through deep cooling heat exchanger tube
Cryogenic liquid gasification is heated to the output temperature needed by the heat transfer of beam 5（Temperature controller 6 is set to deep cooling heat-exchanging tube bundle 5
Lower section, for controlling the output temperature of deep cooling heat-exchanging tube bundle 5）, water level controller 1 is located at the horizontal position of deep cooling heat-exchanging tube bundle 5
It sets, is to guarantee water potential submergence deep cooling heat-exchanging tube bundle 5 in water-bath storage tank A, meets heat exchange demand.Water level control is to pass through low liquid level
Moisturizing, low liquid level and the chain realization of the control alarm of burner 2.The lower part of deep cooling heat-exchanging tube bundle 5 is equipped with liquid gas inlet 12, deep
The top of cold heat-exchanging tube bundle 5 is equipped with overheated gas outlet 13.Liquefied gas（Such as liquefied natural gas, liquefy nitrogen etc.）, pass through depth
The liquid gas inlet 12 of cold heat-exchanging tube bundle 5 enters deep cooling heat-exchanging tube bundle 5 and exchanges heat, and by following several stages, is subcooled by temperature
Liquid is heated to the liquid of the temperature of boiling point, then by boiling point temperature liquid gasification to the gas of dew-point temperature, this is one
Two-phase heat exchanging segment, then continue by the gas of dew-point temperature the temperature for being heated to customer requirement, the gas of overheat passes through deep cooling and exchanges heat
Downstream unit is arrived in the overheated gas outlet 13 of tube bank 5.
The utility model improves traditional combustion-type water bath type gasifier structure (see Fig. 1), after smoke pipe 4,
Before tail gas flue 11, increase by a fin shell-and-tube aftercooler 7, tail gas passes through shell side with lower pressure drop, with sufficient pipe housing
Piece and heat exchange pipe external surface come into full contact with heat exchange, realize high-temperature tail gas and recirculated water carries out high efficiency low pressure drop heat exchange, make to discharge fume
Temperature is reduced to close to bath temperature, generally can achieve 3 ~ 6 degrees Celsius and approaches temperature.To the power output range of burner 2（Combustion
Thermal discharge when burner is burnt）It has little effect.If being 60 degrees Celsius for general bath temperature, exhaust gas temperature meeting
Less than 65 degrees Celsius.Its exhaust gas temperature heat loss is 2% or so of gross calorific value.Because under normal pressure, exhaust gas temperature is Celsius lower than 100
When spending, saturated vapor condensation releases heat transfer to recirculated water in flue gas, and calorific value is generally 4% of gross calorific value or so.
As shown in figure 3, fin shell-and-tube aftercooler 7 includes that multiple heat exchanger tubes 9 and the multi-disc closely surrounded outside heat exchanger tube 9 are changed
Hot plate piece 10 has recirculated water in heat exchanger tube 9, the waste heat in tail gas is passed to recirculated water using multi-disc heat exchange plate 10, exchanges heat
Plate 10 greatly improves the heat exchange area of 7 shell-side of fin shell-and-tube aftercooler, compensates for the low deficiency of the gas side coefficient of heat transfer,
The process for shortening gas side reduces gas side pressure drop.Combustion tail gas flows through 7 shell-side of fin shell-and-tube aftercooler, circulating water flow warp
In heat exchanger tube 9, two sides fluid heat transfer.Using fin shell-and-tube aftercooler 7, gas heat exchange area can be increased, improves heat exchange efficiency,
Reduce gas side resistance.
As shown in Fig. 2, the utility model improves traditional combustion-type water bath type gasifier structure (see Fig. 1),
Spray distributor pipe 8 is equipped in the outlet of water circulating pump 3.
From water-bath gasifier ice layer thickness computation model, it can be seen that in same water-bath, the temperature of deep cooling side is lower, deep
Cold side heat transfer coefficient is higher, then the thickness of ice sheet is thicker, and the more high then ice sheet of the heat transfer coefficient of water side is thinner, so we can be with
It is by calculating, the hole density of the thick place spray distributor pipe 8 of ice sheet is relatively higher, improve the water side heat transfer system of the regional area
Number.
（Wherein heat exchanger tube outside diameter d o, ice layer thickness Xice, coolant-temperature gage Tw, cryogenic liquid temperature Tc, ice temperature Tice are deep
Cold liquid heat transfer coefficient h c, conduct heat hw for water side, di heat exchange bore, Kwall heat exchanger tube thermal coefficient, Kice ice thermal coefficient；
Ln in formula refers to the logarithm using e the bottom of as）
Recirculated water by water circulating pump 3 after exchanging heat with high-temperature tail gas, into spray distributor pipe 8.Distributor pipe 8 is sprayed to arrange
Heat transfer coefficient direct proportionality in the icing section of deep cooling heat-exchanging tube bundle 5, in aperture density and deep cooling tube bank.It is changed in deep cooling
The icing section of heat pipe bundle 5, for the thicker place of ice sheet, the aperture density for spraying distributor pipe 8 is higher；For the relatively thin ground of ice sheet
Side, the aperture density for spraying distributor pipe 8 are lower.The different aperture density of spray distributor pipe 8 obtains the heat transfer of outside tube water side not
Raising adjustment in proportion, maximum ice layer thickness region, which is controlled, not to be formed ice and sticks together, the outer ice layer thickness base of deep cooling heat-exchanging tube bundle 5
This uniformly, ensure that heat exchange.
Using the burning water bath type gasifier after the utility model, the thermal efficiency, which can be improved, reaches 98% or more, by changing
Burning water bath type gasifier after making can be higher than the thermal efficiency of submerged combustion gasifier.The utility model simultaneously will circulation
Water has led to deep cooling tube bank ice field, and reducing to freeze influences the heat transfer of deep cooling heat-exchanging tube bundle 5.
Claims (8)
1. a kind of combustion-type water bath type gasifier energy conserving system, which is characterized in that including burner, water circulating pump and water-bath storage
Tank；Water level controller, fire tube, smoke pipe and deep cooling heat-exchanging tube bundle are equipped in the water-bath storage tank；The burner and the water-bath
Fire tube connection in storage tank, the fire tube are connected with smoke pipe, and the outlet of the smoke pipe is tail gas flue；The deep cooling heat-exchanging tube bundle
Positioned at the top of water-bath storage tank internal fire pipe and smoke pipe；The water level controller is located at the horizontal position of the deep cooling heat-exchanging tube bundle；
After the smoke pipe, before tail gas flue, it is equipped with a fin shell-and-tube aftercooler；One end of the water circulating pump and the fin shell
The connection of formula aftercooler, the other end are connect with the water-bath storage tank.
2. the system as claimed in claim 1, which is characterized in that the outlet of the water circulating pump is equipped with spray distributor pipe.
3. the system as claimed in claim 1, which is characterized in that the fin shell-and-tube aftercooler includes multiple heat exchanger tubes and tight
Multi-disc heat exchange plate of the close set outside the heat exchanger tube.
4. system as claimed in claim 2, which is characterized in that the spray distributor pipe is arranged in the deep cooling heat-exchanging tube bundle
Icing section.
5. system as claimed in claim 2 or 4, which is characterized in that the aperture density of the spray distributor pipe and the deep cooling
Heat transfer coefficient direct proportionality in heat-exchanging tube bundle.
6. the system as claimed in claim 1, which is characterized in that be additionally provided with temperature controller in the water-bath storage tank, the temperature
Controller is located at the lower section of the deep cooling heat-exchanging tube bundle.
7. the system as claimed in claim 1, which is characterized in that the deep cooling heat-exchanging tube bundle is equipped with liquid gas inlet and mistake
Hot gas outlet.
8. system as claimed in claim 7, which is characterized in that the liquid gas inlet is located at the deep cooling heat-exchanging tube bundle
Lower part, the overheated gas outlet are located at the top of the deep cooling heat-exchanging tube bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821184011.XU CN208169996U (en) | 2018-07-25 | 2018-07-25 | Combustion-type water bath type gasifier energy conserving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821184011.XU CN208169996U (en) | 2018-07-25 | 2018-07-25 | Combustion-type water bath type gasifier energy conserving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208169996U true CN208169996U (en) | 2018-11-30 |
Family
ID=64363598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821184011.XU Expired - Fee Related CN208169996U (en) | 2018-07-25 | 2018-07-25 | Combustion-type water bath type gasifier energy conserving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208169996U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030492A (en) * | 2019-04-30 | 2019-07-19 | 无锡特莱姆气体设备有限公司 | Submerged combustion gasifier and its monitoring system |
| CN111720732A (en) * | 2020-05-28 | 2020-09-29 | 克莱普（浙江）气体设备有限公司 | Full-automatic natural gas/fuel heating integral gasifier |
-
2018
- 2018-07-25 CN CN201821184011.XU patent/CN208169996U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030492A (en) * | 2019-04-30 | 2019-07-19 | 无锡特莱姆气体设备有限公司 | Submerged combustion gasifier and its monitoring system |
| CN111720732A (en) * | 2020-05-28 | 2020-09-29 | 克莱普（浙江）气体设备有限公司 | Full-automatic natural gas/fuel heating integral gasifier |
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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: 20181130 Termination date: 20200725 |
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| CF01 | Termination of patent right due to non-payment of annual fee |