CN204853938U - Vertical gasification is returned and is burnt boiler with flue gas postcombustion function - Google Patents

Vertical gasification is returned and is burnt boiler with flue gas postcombustion function Download PDF

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Publication number
CN204853938U
CN204853938U CN201520486834.8U CN201520486834U CN204853938U CN 204853938 U CN204853938 U CN 204853938U CN 201520486834 U CN201520486834 U CN 201520486834U CN 204853938 U CN204853938 U CN 204853938U
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China
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flue gas
high temperature
returned
secondary combustion
heating boiler
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Expired - Fee Related
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CN201520486834.8U
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Chinese (zh)
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张喜梅
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Individual
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Abstract

The utility model provides a vertical gasification is returned and is burnt boiler with flue gas postcombustion function, belongs to the heating equipment field, including the water jacket furnace body in the structure, in water jacket furnace internal soaring pipe, heat transfer room and high temperature antechamber by last setting under to to and supporting air supply arrangement, its key lies in: be equipped with 1-the 3 flue gas after burner of group on the division board between heat transfer room and high temperature antechamber, its structure includes: the flue gas of setting on the division board burns a section of thick bamboo, setting in the flue gas surge drum of flue gas burning section of thick bamboo lower extreme and the oxygenating air supply mechanism of forming a complete set. Its coal -fired burning is abundant, efficient, the emission smoke and dust is few, reaches fine energy saving and emission reduction effect.

Description

Burning water-heating boiler is returned in a kind of vertical gasification with flue gas secondary combustion function
Technical field
The utility model belongs to heating equipment field, is specifically related to a kind of vertical gasification with flue gas secondary combustion function and returns burning water-heating boiler.
Background technology
At northern country, family's heating in winter is mostly at use hot-water heating coal-burning boiler.But along with the raising of people's living standard, more and more higher to the performance requirement of hot-water heating coal-burning boiler, namely seek the hot-water heating coal-burning boiler that a kind of safety is economized on coal, pollution-free, the thermal efficiency is high.
Hot-water heating coal-burning boiler is in the market broadly divided into " directly burn " and " returning burning " two kinds.The fuel of " directly burn " boiler in combustion chamber after burning, the water in the heat heating pipe in flue dust is produced after utilizing burning, but because " directly burning " boiler only carries out primary combustion, fuel combustion is thorough not, cause the waste of the fuel such as coal ash, simultaneously due to primary combustion, the flue dust produced after burning is too much, environment, weather etc. are impacted, does not meet the policy of energy-conserving and environment-protective; The combustion system of the boiler that " returns burning " to " directly burning " boiler improves, second-time burning can be carried out to the fuel gas discharged in flue dust during fuel combustion, but the resonable degree due to combustion chamber structure needs depth design and planning, still there is the problem such as fume emission and dust pollution, even produce chain returning and answer that the thermal efficiency is low, slow, the problem such as area of heat-supply service is not enough of getting angry, although there is more problems to be optimized, but compare " directly burning " boiler, " returning burning " boiler is progressively approved by market.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of vertical gasification with smoke secondary gasification and combustion function and returns burning water-heating boiler, coal-fired drying, desulfurization and pre-gasification is carried out by the hot environment of high temperature precombustion chamber, and burn in high temperature precombustion chamber, by means of smoke secondary combustion device, second-time burning process is carried out to flue gas, its fired coal combustion is abundant, efficiency is high, and discharge flue dust is few, reaches good effects of energy saving and emission reduction.
The technical solution adopted in the utility model is: burning water-heating boiler is returned in a kind of vertical gasification with flue gas secondary combustion function, structure comprises water jacket furnace, the impact tube arranged from top to bottom in water jacket furnace, Heat Room and high temperature precombustion chamber, and supporting air-supply arrangement, its key is: the demarcation strip between Heat Room and high temperature precombustion chamber is provided with 1 ~ 3 group of smoke secondary combustion device, its structure comprises: be arranged on the smoke combustion cylinder on demarcation strip, be arranged on the fume collection cylinder of smoke combustion cylinder lower end and supporting oxygenating wind pushing mechanism.
Further: smoke combustion cylinder is made up of outer cylinder body and inner barrel, between inside and outside cylindrical shell, arrange closed hollow sandwich, outer cylinder body top bilateral symmetry is provided with fresh air inlet, inner barrel is distributed with exhaust vent group.
The shape of exhaust vent is oblique quadrangle, or triangle, or circular.
Oxygenating wind pushing mechanism is be arranged on the ring-like ajutage coordinated on demarcation strip, with outer cylinder body upper end, being communicated with the fresh air inlet of outer cylinder body with the adjustable oxygenating ajutage be arranged on high temperature precombustion chamber sidewall respectively into and out of air port of ring-like ajutage.
The shape of fume collection cylinder is horn-like, its material is recrystallized silicon carbide.
In Heat Room, be provided with the heat exchange pipe be communicated with the water jacket of water jacket furnace, ring-like heat exchanger tube or honeycomb fashion heat exchange dish from top to bottom successively, ring-like heat exchanger tube inside lower end is provided with refractory concrete shutoff.
The sidewall of Heat Room is provided with flue dust clean-up port.
Be provided with fire grate bottom high temperature precombustion chamber, fire grate underlying space arranges ash-falling chamber, supportingly respectively on the sidewall of high temperature precombustion chamber top, bottom and ash-falling chamber is provided with coal filling hole, breast hole and cleaning door.
The lower surface of flue dust clean-up port, coal filling hole, breast hole and cleaning door is to the tilted setting of water jacket furnace.
Air-supply arrangement is 2 ~ 4 groups of adjustable ajutages be arranged on high temperature precombustion chamber sidewall, and the air outlet of adjustable ajutage is located at the top of high temperature precombustion chamber and the top of ash-falling chamber respectively.
Adopt the beneficial effect that the utility model produces: (1) carries out coal-fired drying, desulfurization and pre-gasification by the hot environment of high temperature precombustion chamber, and burn in high temperature precombustion chamber, by means of smoke secondary combustion device, second-time burning process is carried out to flue gas, its fired coal combustion is abundant, efficiency is high, and discharge flue dust is few, reaches good effects of energy saving and emission reduction; (2) architectural characteristic of the smoke combustion cylinder be made up of outer cylinder body and inner barrel itself, by means of the air-supply of adjustable oxygenating ajutage top, with the abundant mixed combustion of flue gas in inner barrel in high temperature environments, its sufficient combustion, after burning in flue dust combustible and fuel gas content few, improve the levels of emissions of boiler; (3) heat exchange pipe arranged in Heat Room, ring-like heat exchanger tube or honeycomb fashion heat exchange dish, be arranged in the middle part of Heat Room in conjunction with impact tube bottom, effectively can extend the holdup time of high-temperature flue gas, improving heat exchanging efficiency.
Accompanying drawing explanation
Fig. 1 is the structure cross-sectional schematic of the utility model embodiment one;
Fig. 2 is the structure cross-sectional schematic of embodiment one 90-degree rotation;
Fig. 3 is the structure cross-sectional schematic of embodiment two;
Fig. 4 is the structure cross-sectional schematic of embodiment two 90-degree rotation;
Fig. 5 is flue gas circulation path schematic diagram in embodiment one Heat Room;
Fig. 6 is the air intake path schematic diagram of air-supply arrangement;
Fig. 7 is the air intake path schematic diagram of adjustable oxygenating ajutage;
Fig. 8 is the structure cross-sectional schematic of smoke combustion cylinder;
Fig. 9 is the structural representation of smoke combustion cylinder;
Figure 10 is the structural representation of honeycomb fashion heat exchange dish;
Figure 11 is the structural representation regulating air-intake device;
In accompanying drawing: 1 is water jacket furnace, 1-1 is high temperature precombustion chamber, 1-1-1 is coal filling hole, 1-1-2 is breast hole, 1-2 is Heat Room, 1-2-1 is heat exchange pipe, 1-2-2 is ring-like heat exchanger tube, 1-2-3 is honeycomb fashion heat exchange dish, 1-2-3-1 is the hollow disk of concave, 1-2-3-2 is heat exchange short tube, 1-2-4 is refractory concrete shutoff, 1-2-5 is flue dust clean-up port, 1-3 is demarcation strip, 1-4 is smoke combustion cylinder, 1-4-1 is outer cylinder body, 1-4-2 is inner barrel, 1-4-3 is closed hollow sandwich, 1-4-4 is exhaust vent, 1-4-5 is fresh air inlet, 1-5 is fume collection cylinder, 1-6 is ring-like ajutage, 1-7 is fire grate, 1-8 is ash-falling chamber, 1-8-1 is cleaning door, 1-9 is adjustable oxygenating ajutage, 2 is impact tubes, 3 is adjustable ajutages, 4-1 is shutoff pipe, 4-2 is air intake through hole, arrow represents flow direction.
Detailed description of the invention
Referring to accompanying drawing 1-11, burning water-heating boiler is returned in a kind of vertical gasification with flue gas secondary combustion function, structure comprises water jacket furnace 1, the impact tube 2 arranged from top to bottom in water jacket furnace 1, Heat Room 1-2 and high temperature precombustion chamber 1-1, and supporting air-supply arrangement, its key is: the demarcation strip 1-3 between Heat Room 1-2 and high temperature precombustion chamber 1-1 is provided with 1 ~ 3 group of smoke secondary combustion device, its structure comprises: be arranged on the smoke combustion cylinder 1-4 on demarcation strip 1-3, be arranged on the fume collection cylinder 1-5 of smoke combustion cylinder 1-4 lower end and supporting oxygenating wind pushing mechanism.Be provided with fire grate 1-7 bottom high temperature precombustion chamber 1-1, fire grate 1-7 underlying space arranges ash-falling chamber 1-8, and coal-fired residue after the combustion gasification of high temperature precombustion chamber 1-1 is Powdered, falls in ash-falling chamber 1-8 from fire grate 1-7; Air-supply arrangement is 2 ~ 4 groups of adjustable ajutages 3 be arranged on high temperature precombustion chamber 1-1 sidewall, and the air outlet of adjustable ajutage 3 is located at the top of high temperature precombustion chamber 1-1 and the top of ash-falling chamber 1-8 respectively; Demarcation strip 1-3 is that water jacket structure is communicated with the water jacket in water jacket furnace 1.Coal-fired at high temperature precombustion chamber 1-1 inner drying, desulfurization and pre-gasification, generation contains the flue gas of a large amount of combustible and fuel gas and assembles in high temperature precombustion chamber 1-1, the adjustable ajutage 3 being located at high temperature precombustion chamber 1-1 top and ash-falling chamber 1-8 top by means of air outlet respectively send high temperature new wind in high temperature precombustion chamber 1-1, the flue gas vigorous combustion in high temperature precombustion chamber 1-1 containing a large amount of combustible and fuel gas, flue gas after burning enters in the process fume collection cylinder 1-5 from the decline of high temperature precombustion chamber 1-1 upper space, fire coal through burning is lighted once to return and is burnt process, the new wind of high temperature that send entered by oxygenating wind pushing mechanism in smoke combustion cylinder 1-4 through fume collection cylinder 1-5 again carries out oxygenating, second-time burning is carried out in smoke combustion cylinder 1-4 in high temperature environments, in this process, Thorough combustion has fallen combustible in flue gas and imflammable gas, thus improve efficiency of combustion coal-fired in boiler and heating efficiency, reach the effect of energy-saving and emission-reduction, and from the impact tube 2 of open air observation boiler, almost can't see the discharge of flue gas.
Smoke combustion cylinder 1-4 is made up of outer cylinder body 1-4-1 and inner barrel 1-4-2, arranges closed hollow sandwich 1-4-3 between inside and outside cylindrical shell, and outer cylinder body 1-4-1 top bilateral symmetry is provided with fresh air inlet 1-4-5, inner barrel 1-4-2 is distributed with exhaust vent 1-4-4 group.The shape of exhaust vent 1-4-4 is oblique quadrangle, or triangle, or circular.
Oxygenating wind pushing mechanism is be arranged on the ring-like ajutage 1-6 coordinated on demarcation strip 1-3, with outer cylinder body 1-4-1 upper end, and ring-like ajutage 1-6 is communicated with the fresh air inlet 1-4-5 of outer cylinder body 1-4-1 with the adjustable oxygenating ajutage 1-9 be arranged on high temperature precombustion chamber 1-1 sidewall respectively into and out of air port.
The shape of fume collection cylinder 1-5 is horn-like, its material is recrystallized silicon carbide.The height of the fire coal added in high temperature precombustion chamber 1-1, floods the bottom of fume collection cylinder 1-5.
When flue gas enters the inner barrel 1-4-2 of smoke combustion cylinder 1-4 in fume collection cylinder 1-5, blow by means of adjustable oxygenating ajutage 1-9, new wind enters in ring-like ajutage 1-6 from the air outlet of adjustable oxygenating ajutage 1-9, enter in closed hollow sandwich 1-4-3 by the fresh air inlet 1-4-5 of ring-like ajutage 1-6 air outlet on outer cylinder body 1-4-1 again, again by the exhaust vent 1-4-4 of inner barrel 1-4-2, enter in the inner barrel 1-4-2 space under hot environment, fully mix with flue gas, and Thorough combustion falls remaining combustible and fuel gas in flue gas, make " totally " high-temperature flue gas relatively enter Heat Room 1-2 and carry out heat exchange.
The adjustable ajutage 3 that high temperature precombustion chamber 1-1 sidewall is arranged and the adjustable oxygenating ajutage 1-9 on high temperature precombustion chamber 1-1 sidewall, through the heating of high temperature precombustion chamber 1-1, the new air temperature sent is very high, contributes to promoting combustion efficiency.Adjustable ajutage 3 and adjustable oxygenating ajutage 1-9 air intake are all provided with adjustment air-intake device, and adjustment air-intake device structure comprises the shutoff pipe 4-1 being sleeved on air intake and the plug-type air-supply adjustment structure being evenly distributed on the air intake through hole 4-2 group formation on shutoff pipe 4-1; Air intake through hole 4-2 is along shutoff pipe 4-1 axially equally distributed strip through hole, or evenly distributed manhole on shutoff pipe 4-1.
Referring to the embodiment one shown in accompanying drawing 1,2 and 5, bottom impact tube 2, be arranged on the middle part in space in Heat Room 1-2; The heat exchange pipe 1-2-1 be communicated with the water jacket of water jacket furnace 1, ring-like heat exchanger tube 1-2-2 is provided with from top to bottom successively in Heat Room 1-2; Heat exchange pipe 1-2-1 is arranged on Heat Room 1-2 top and is distributed in impact tube 2 both sides, and ring-like heat exchanger tube 1-2-2 is arranged on the below bottom impact tube 2, and ring-like heat exchanger tube 1-2-2 inside lower end is provided with refractory concrete shutoff 1-2-4.By means of the heat exchange pipe 1-2-1 arranged in Heat Room 1-2 and ring-like heat exchanger tube 1-2-2, the circulation path of high-temperature flue gas complications is formed with the bottom of impact tube 2, this structure can the circulation path of prolong smoke, make high-temperature flue gas fully and heat exchange pipe 1-2-1 and ring-like heat exchanger tube 1-2-2 carry out heat exchange, improve heat exchange efficiency; The circulation path of flue gas: as shown in the direction of arrow in Fig. 5.
Referring to the embodiment two shown in accompanying drawing 3 and 4, bottom impact tube 2, be arranged on the middle part in space in Heat Room 1-2; The heat exchange pipe 1-2-1, the honeycomb fashion heat exchange dish 1-2-3 that are communicated with the water jacket of water jacket furnace 1 is provided with from top to bottom successively in Heat Room 1-2, heat exchange pipe 1-2-1 is arranged on Heat Room 1-2 top and is distributed in impact tube 2 both sides, and honeycomb fashion heat exchange dish 1-2-3 is arranged on the below bottom impact tube 2.By means of the heat exchange pipe 1-2-1 arranged in Heat Room 1-2 and honeycomb fashion heat exchange dish 1-2-3, with the circulation path forming high-temperature flue gas complications bottom impact tube 2, this structure can the circulation path of prolong smoke, make high-temperature flue gas fully and heat exchange pipe 1-2-1 and honeycomb fashion heat exchange dish 1-2-3 carry out heat exchange, improve heat exchange efficiency; The circulation path of flue gas: identical with embodiment one.The structure of honeycomb fashion heat exchange dish 1-2-3 is the concave hollow disk 1-2-3-1 be communicated with water jacket in the water jacket furnace 1 and heat exchange short tube 1-2-3-2 be evenly arranged on bottom concave hollow disk 1-2-3-1 indent, this configuration increases heat exchange area and volume is little, be convenient to arrange at Heat Room 1-2.
The sidewall of Heat Room 1-2 is provided with flue dust clean-up port 1-2-5.Be provided with fire grate 1-7 bottom high temperature precombustion chamber 1-1, fire grate 1-7 underlying space arranges ash-falling chamber 1-8, supportingly respectively on the sidewall of high temperature precombustion chamber 1-1 top, bottom and ash-falling chamber 1-8 is provided with coal filling hole 1-1-1, breast hole 1-1-2 and cleaning door 1-8-1.The lower surface of flue dust clean-up port 1-2-5, coal filling hole 1-1-1, breast hole 1-1-2 and cleaning door 1-8-1 is to the tilted setting of water jacket furnace 1.Coal filling hole 1-1-1 lower surface, to the tilted setting of water jacket furnace 1, arranges like this and facilitates rabbler's tool to coal in high temperature precombustion chamber 1-1, even if there is coal cinder to drop on the lower surface of coal filling hole 1-1-1, also can slide to High Temperature Pre combustion room 1-1 under coal cinder self gravitation.Breast hole 1-1-2, cleaning door 1-8-1 and 1-2-5 lower surface, flue dust clean-up port, to the tilted setting of water jacket furnace 1, can increase vision range when scarfing cinder and deashing; The clean-out door that breast hole 1-1-2 and cleaning door 1-8-1 install and shoot door, poorly sealed during owing to closing, also can play to assist and send wind action.

Claims (10)

1. one kind is returned burning water-heating boiler with the vertical gasification of flue gas secondary combustion function, structure comprises water jacket furnace (1), the impact tube (2) arranged from top to bottom in water jacket furnace (1), Heat Room (1-2) and high temperature precombustion chamber (1-1), and supporting air-supply arrangement, it is characterized in that: the demarcation strip (1-3) between Heat Room (1-2) and high temperature precombustion chamber (1-1) is provided with 1 ~ 3 group of smoke secondary combustion device, its structure comprises: be arranged on the smoke combustion cylinder (1-4) on demarcation strip (1-3), be arranged on the fume collection cylinder (1-5) of smoke combustion cylinder (1-4) lower end and supporting oxygenating wind pushing mechanism.
2. burning water-heating boiler is returned in the vertical gasification with flue gas secondary combustion function according to claim 1, it is characterized in that: described smoke combustion cylinder (1-4) is made up of outer cylinder body (1-4-1) and inner barrel (1-4-2), closed hollow sandwich (1-4-3) is set between inside and outside cylindrical shell, outer cylinder body (1-4-1) top bilateral symmetry is provided with fresh air inlet (1-4-5), inner barrel (1-4-2) is distributed with exhaust vent (1-4-4) group.
3. burning water-heating boiler is returned in the vertical gasification with flue gas secondary combustion function according to claim 2, it is characterized in that: the shape of described exhaust vent (1-4-4) is oblique quadrangle, or triangle, or circular.
4. burning water-heating boiler is returned in the vertical gasification with flue gas secondary combustion function according to claim 1, it is characterized in that: described oxygenating wind pushing mechanism is for being arranged on the ring-like ajutage (1-6) that demarcation strip (1-3) is upper, coordinate with outer cylinder body (1-4-1) upper end, being communicated with the fresh air inlet (1-4-5) of outer cylinder body (1-4-1) with the adjustable oxygenating ajutage (1-9) be arranged on high temperature precombustion chamber (1-1) sidewall respectively into and out of air port of ring-like ajutage (1-6).
5. burning water-heating boiler is returned in the vertical gasification with flue gas secondary combustion function according to claim 1, it is characterized in that: the shape of described fume collection cylinder (1-5) is horn-like, its material is recrystallized silicon carbide.
6. burning water-heating boiler is returned in the vertical gasification with flue gas secondary combustion function according to claim 1, it is characterized in that: in Heat Room (1-2), be provided with the heat exchange pipe (1-2-1), ring-like heat exchanger tube (1-2-2) or the honeycomb fashion heat exchange dish (1-2-3) that are communicated with the water jacket of water jacket furnace (1) from top to bottom successively, ring-like heat exchanger tube (1-2-2) inside lower end is provided with refractory concrete shutoff (1-2-4).
7. burning water-heating boiler is returned in the vertical gasification with flue gas secondary combustion function according to claim 1 or 6, it is characterized in that: the sidewall of described Heat Room (1-2) is provided with flue dust clean-up port (1-2-5).
8. burning water-heating boiler is returned in the vertical gasification with flue gas secondary combustion function according to claim 7, it is characterized in that: described high temperature precombustion chamber (1-1) bottom is provided with fire grate (1-7), fire grate (1-7) underlying space arranges ash-falling chamber (1-8), supportingly respectively on the sidewall of high temperature precombustion chamber (1-1) top, bottom and ash-falling chamber (1-8) is provided with coal filling hole (1-1-1), breast hole (1-1-2) and cleaning door (1-8-1).
9. burning water-heating boiler is returned in the vertical gasification with flue gas secondary combustion function according to claim 8, it is characterized in that: the lower surface of described flue dust clean-up port (1-2-5), coal filling hole (1-1-1), breast hole (1-1-2) and cleaning door (1-8-1) is to water jacket furnace (1) tilted setting.
10. burning water-heating boiler is returned in the vertical gasification with flue gas secondary combustion function according to claim 1, it is characterized in that: described air-supply arrangement is for being arranged on 2 ~ 4 groups of adjustable ajutages (3) on high temperature precombustion chamber (1-1) sidewall, and the air outlet of adjustable ajutage (3) is located at the top of high temperature precombustion chamber (1-1) and the top of ash-falling chamber (1-8) respectively.
CN201520486834.8U 2015-07-08 2015-07-08 Vertical gasification is returned and is burnt boiler with flue gas postcombustion function Expired - Fee Related CN204853938U (en)

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Application Number Priority Date Filing Date Title
CN201520486834.8U CN204853938U (en) 2015-07-08 2015-07-08 Vertical gasification is returned and is burnt boiler with flue gas postcombustion function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520486834.8U CN204853938U (en) 2015-07-08 2015-07-08 Vertical gasification is returned and is burnt boiler with flue gas postcombustion function

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CN204853938U true CN204853938U (en) 2015-12-09

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CN201520486834.8U Expired - Fee Related CN204853938U (en) 2015-07-08 2015-07-08 Vertical gasification is returned and is burnt boiler with flue gas postcombustion function

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106122941A (en) * 2016-08-12 2016-11-16 常滏源 Coal-burning boiler assisted combustion device
CN106152111A (en) * 2016-08-12 2016-11-23 常滏源 Accurately control combustion system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106122941A (en) * 2016-08-12 2016-11-16 常滏源 Coal-burning boiler assisted combustion device
CN106152111A (en) * 2016-08-12 2016-11-23 常滏源 Accurately control combustion system

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Granted publication date: 20151209