CN214881305U - Low-calorific-value gas generating device for photovoltaic glass melting furnace - Google Patents

Abstract

A low-calorific-value gas generating device for a photovoltaic glass melting furnace belongs to the technical field of fuel production of photovoltaic glass and solves the technical problems of low gasification efficiency, resource waste and the like. The solution is as follows: a low-calorific-value gas generating device for a photovoltaic glass melting furnace comprises a coal feeding device, a gas generating furnace, a gas separating device, a waste heat recovery device, a dust removing device and a cooling device which are connected in sequence, wherein a slag discharging device is connected below the gas generating furnace; the coal feeding device comprises a raw coal storage hopper, a small coal hopper and a spiral conveyor which are sequentially connected, the gas generating furnace comprises a furnace body, the gas separating device comprises two sets of cyclone separators, and the waste heat recovery device comprises a high-temperature preheater, a waste heat recoverer, an economizer, a steam pocket and a desalination water pipe network. The utility model discloses technology simple structure, the coal gas gasification is efficient, obtains the coal gas quality high to the coal gas that this device produced accords with national environmental protection requirement, has solved fuel unicity again, and has reduced photovoltaic glass's manufacturing cost.

Description

Low-calorific-value gas generating device for photovoltaic glass melting furnace

Technical Field

The utility model belongs to the technical field of photovoltaic glass production fuel, concretely relates to low heat value coal gas generating device for photovoltaic glass melting furnace.

Background

At present, most of photovoltaic glass melting furnaces adopt high-calorific-value fuels. The high heating value fuel is generally heavy oil or natural gas, petroleum coke; the fuel source is single, the fuel gas needs to be laid with pipelines or transported by a tank truck, the laid pipelines occupy partial cultivated land and forest land, even pass through railways and lakes to be transported by the tank truck, during major holidays, transportation departments stipulate that dangerous chemicals are strictly prohibited to go on the road, the photovoltaic glass kiln needs to be continuously operated for 6-10 years, and the use of outsourced fuel can cause fuel interruption and influence production.

Because of the structural characteristics of 'lack of oil, less gas and more coal' energy sources, China determines that the specific gravity of coal energy consumption is high, the fuel energy sources are increasingly in short supply, and the development and application of novel fuels are imperative. For photovoltaic glass melting furnaces, low-calorific-value gas is a trend as a fuel, but the photovoltaic glass melting furnaces have particularity, and a generation device used for the photovoltaic glass melting furnaces needs to be developed. Coal gasification refers to a process in which coal is converted into combustible gas through a series of thermochemical reaction processes in the presence of a gasification medium.

The existing gas generating device has the following problems: blockage is easily caused in the coal feeding process; the hood is easy to fall off and is unstable; the slag discharge pipe is easy to break in the slag discharge process, the device is imperfect, the temperature required by the photovoltaic glass melting furnace cannot be reached, the gasification efficiency is not high, the resource is wasted, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a photovoltaic glass melting furnace is with low calorific value coal gas generating device, solved not high, the wasting of resources scheduling technical problem of gasification efficiency.

In order to solve the above problem, the technical scheme of the utility model is that: a low heating value gas generating device for a photovoltaic glass melting furnace is disclosed, wherein: comprises a coal feeding device, a gas producer, a gas separation device, a waste heat recovery device, a dust removal device and a cooling device which are connected in sequence;

the coal feeding device comprises a raw coal storage hopper, a small coal hopper and a spiral conveyor which are sequentially connected, and a vertical discharging pipe and an inclined discharging pipe which are sequentially connected are arranged at the output end of the spiral conveyor;

the gas producer comprises a producer body, wherein the producer body comprises a gas chamber, a dense phase section, an expanding section and a dilute phase section which are sequentially connected from bottom to top, two groups of lower slag pipes are arranged at the bottom of the gas producer, a slag discharging device is arranged at a discharge port of each lower slag pipe, a feeding pipe with the same inclination angle as that of an inclined discharging pipe is arranged on one side of each dense phase section, an expanding opening is formed in the bottom end of the feeding pipe, the feeding pipe is connected with the dense phase section through the expanding opening, and the tail end of the inclined discharging pipe extends into the feeding pipe through the top end of the feeding pipe;

the coal gas separation device comprises two sets of cyclone separators, and the two sets of cyclone separators are arranged between the coal gas generating furnace and the waste heat recovery device in parallel; the waste heat recovery device comprises a high-temperature preheater, a waste heat recoverer, an economizer, a steam pocket and a desalination water pipe network, coal gas output by the coal gas separation device sequentially passes through the high-temperature preheater, the waste heat recoverer and the economizer and then enters the dust removal device, a diffusion pipeline is arranged on a connecting pipeline between the dust removal device and the cooling device, and the other end of the diffusion pipeline is connected with a diffusion torch; the cooling device comprises a first coal gas cooler and a second coal gas cooler which are sequentially connected, and coal gas output from the second coal gas cooler goes to a desulfurization process.

Further, the input of screw conveyer and little coal scuttle bottom are through the intercommunication flaring intercommunication, the intercommunication flaring is hopper-shaped structure, the upper end opening size of intercommunication flaring is greater than little coal scuttle bottom opening size, little coal scuttle internally mounted has the loosening machine.

Further, a dust collector is installed at the top of the raw coal storage hopper, a radar level gauge is installed on the raw coal storage hopper, and an adjusting valve is arranged between the raw coal storage hopper and the small coal hopper.

Further, the hypomere of perpendicular discharging pipe is equipped with the expansion joint, the length that the slope discharging pipe stretched into in the inlet pipe accounts for the half of inlet pipe length, the inlet pipe top is equipped with the closing cap, be equipped with two sets of coal feeding tuber pipes that the symmetry set up on the closing cap, be equipped with the regulating plate in the inlet pipe between closing cap and the slope discharging pipe, the equipartition is equipped with a plurality of ventilation holes of no less than four groups on the regulating plate.

Further, the furnace body lining is formed by pouring refractory castable at one time, and the furnace body lining is provided with high-temperature-resistant puller nails.

Further, the height ratio of the dense phase section to the expanding diameter section is 1: 2.

Further, the lower part of the inner cavity of the furnace body is provided with an air distribution device, the air distribution device comprises an air distribution plate, a plurality of groups of air pipes uniformly distributed on the air distribution plate and air caps fixed at the top ends of the air pipes through full welding, the air distribution plate is uniformly provided with groups of air cap holes, and the air pipes are respectively arranged in the air cap holes.

Furthermore, the slag discharging device comprises two groups of spiral slag removers, the input ends of the spiral slag removers are respectively connected with the two groups of slag discharging pipes, and the output ends of the spiral slag removers are connected with the slag conveying belt machine, so that waste slag is sent into the slag bin through the slag conveying belt machine.

Furthermore, the cooling device also comprises a circulating water pipe network, a water outlet of the circulating water pipe network is respectively connected with a lower water inlet of the first gas cooler and an upper water inlet of the second gas cooler, and an upper water outlet of the first gas cooler and a lower water outlet of the second gas cooler are both connected with a water return port of the circulating water pipe network.

Furthermore, the waste heat recovery device also comprises a desalination water pipe network and a desalination water pipe network, wherein the desalination water pipe network is connected with an economizer, the temperature of desalination water is increased by the economizer and then is respectively sent into a steam pocket and the desalination water pipe network, the steam pocket is connected with a waste heat recoverer, steam generated by the steam pocket is sent into a high-temperature preheater, air sent by a gasification fan is received in the high-temperature preheater, and the steam and the air received in the high-temperature preheater are sent into an air chamber of the coal gas producer as gasification agents.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a coal feeding device, gas producer, coal gas separator, waste heat recovery device, dust collector, cooling device and arrange the setting of sediment device, send coal gas into the subsequent handling through purifying and cooling and obtain the low calorific value coal gas for photovoltaic glass melting furnace after desulfurizing, simple process obtains the coal gas of high quality;

2. the gas separation device adopts cyclone separators arranged in parallel, so that the separation effect is good, and the production requirement is better met;

3. the cooling device adopts the sequential connection arrangement of the first gas cooler and the second gas cooler, thereby increasing the cooling effect;

4. the gas producer is provided with two groups of slag discharging pipes, the slag discharging device is provided with two groups of spiral slag discharging machines connected with the two groups of slag discharging pipes, waste slag of the two groups of spiral slag discharging machines is sent into the slag bin through the slag conveying belt conveyor, two groups of slag discharging routes are arranged, the slag discharging capacity is improved, and the lower slag pipe is prevented from being overloaded and broken;

5. the bottom of the small coal hopper is provided with a communicating flaring, so that the pressure of pulverized coal entering the spiral conveyor is relieved, a certain relieving effect is also brought to the conveying, and the loosening machine in the small coal hopper is arranged on the inner wall of the small coal hopper to clean the inner wall of the small coal hopper so as to prevent blockage; the top surface of the raw coal storage hopper is provided with a dust collector to prevent combustible gas or dust from diffusing, and the radar material level can monitor a continuous material level;

6. the output end of the screw conveyer is provided with a vertical discharging pipe and an inclined discharging pipe which are sequentially connected, the tail end of the inclined discharging pipe is arranged in the feeding pipe, the length of the inclined discharging pipe extending into the feeding pipe accounts for half of the length of the feeding pipe, two groups of coal sowing air pipes which are symmetrically arranged enable coal sowing air to enter the feeding pipe through the coal sowing air pipes, the possibility that gas heat in a furnace body is mixed with small coal buckets is effectively avoided, ventilation is uniform, the coal sowing air is more uniform in the feeding pipe due to the arrangement of the adjusting plate, the contact probability of coal dust and oxygen is increased, and the carbon conversion rate is improved;

7. the blast cap in the air distribution device is fixed on the air pipe through full welding, so that the process is prevented from being influenced by falling off of the blast cap;

8. the height ratio of the dense phase section to the diameter expanding section is 1:2, the length of the diameter expanding section is increased, the length of the dense phase section is shortened, the retention time of coal in a furnace body is increased, and the gasification efficiency is improved.

The utility model discloses technology simple structure, the coal gas gasification is efficient, obtains the coal gas quality high to the coal gas that this device produced accords with national environmental protection requirement, has solved fuel unicity again, and has reduced photovoltaic glass's manufacturing cost.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of I in FIG. 1;

FIG. 3 is an enlarged view of II in FIG. 1;

fig. 4 is a schematic structural view of the middle air distribution device of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

A low heating value gas generating apparatus for a photovoltaic glass melting furnace as shown in fig. 1 to 4, wherein: comprises a coal feeding device, a gas producer 1, a gas separation device, a waste heat recovery device, a dust removal device 2 and a cooling device which are connected in sequence;

the coal feeding device comprises a raw coal storage hopper 3-1, a small coal hopper 3-2 and a spiral conveyor 3-3 which are sequentially connected, and a vertical discharging pipe 3-4 and an inclined discharging pipe 3-5 which are sequentially connected are arranged at the output end of the spiral conveyor 3-3;

the coal gas producer 1 comprises a producer body, the producer body comprises a gas chamber 1-1, a dense phase section 1-2, an expanding section 1-3 and a dilute phase section 1-4 which are sequentially connected from bottom to top, the bottom of the coal gas producer 1 is provided with two groups of lower slag pipes 1-5, a slag discharging device is arranged at a discharge port of each lower slag pipe 1-5, one side of each dense phase section 1-2 is provided with a feeding pipe 1-6 with the same inclination angle as that of an inclined discharging pipe 3-5, the bottom end of each feeding pipe 1-6 is provided with an expanding opening 1-6-1, each feeding pipe 1-6 is connected with the dense phase section 1-2 through the expanding opening 1-6-1, and the tail end of each inclined discharging pipe 3-5 extends into the feeding pipe 1-6 through the top end of the feeding pipe 1-6;

the coal gas separation device comprises two sets of cyclone separators 4, and the two sets of cyclone separators 4 are arranged between the coal gas producer 1 and the waste heat recovery device in parallel; the waste heat recovery device comprises a high-temperature preheater 5-1, a waste heat recoverer 5-2, an economizer 5-3, a steam pocket 5-4 and a desalination water pipe network, coal gas output by the coal gas separation device sequentially passes through the high-temperature preheater 5-1, the waste heat recoverer 5-2 and the economizer 5-3 and then enters the dust removal device 2, a diffusion pipeline is arranged on a connecting pipeline between the dust removal device 2 and the cooling device, and the other end of the diffusion pipeline is connected with a diffusion torch 6; the cooling device comprises a first gas cooler 7-1 and a second gas cooler 7-2 which are connected in sequence, and the gas output from the second gas cooler 7-2 goes to a desulfurization process.

Further, the input end of the screw conveyor 3-3 is communicated with the bottom end of the small coal hopper 3-2 through a communicating flaring 3-6, the communicating flaring 3-6 is of a funnel-shaped structure, the size of an opening at the upper end of the communicating flaring 3-6 is larger than that of an opening at the bottom end of the small coal hopper 3-2, and a loosening machine is arranged inside the small coal hopper 3-2.

Further, a dust collector 3-7 is installed at the top of the raw coal storage hopper 3-1, a radar level gauge is installed on the raw coal storage hopper 3-1, and an adjusting valve is arranged between the raw coal storage hopper 3-1 and the small coal hopper 3-2.

Furthermore, the lower section of the vertical discharging pipe 3-4 is provided with an expansion joint, the length of the inclined discharging pipe 3-5 extending into the feeding pipe 1-6 accounts for one half of the length of the feeding pipe 1-6, the top of the feeding pipe 1-6 is provided with a sealing cover 1-8, two groups of coal sowing air pipes 1-7 symmetrically arranged are arranged on the sealing cover 1-8, an adjusting plate 1-9 is arranged in the feeding pipe 1-6 between the sealing cover 1-8 and the inclined discharging pipe 3-5, and a plurality of air holes not less than four groups are uniformly distributed on the adjusting plate 1-9.

Further, the furnace body lining is formed by pouring refractory castable at one time, and the furnace body lining is provided with high-temperature-resistant puller nails.

Further, the height ratio of the dense phase section 1-2 to the diameter expanding section 1-3 is 1: 2.

Further, an air distribution device 1-10 is installed on the lower portion of the inner cavity of the furnace body, the air distribution device 1-10 comprises an air distribution plate 1-10-1, a plurality of groups of air pipes 1-10-2 evenly distributed on the air distribution plate 1-10-1, and air caps 1-10-3 fixed to the top ends of the air pipes 1-10-2 through full welding, 48 groups of air cap holes are evenly distributed on the air distribution plate 1-10-1, and the air pipes 1-10-2 are respectively arranged in the air cap holes.

Further, the slag discharging device comprises two groups of spiral slag removers 8-1, the input ends of the two groups of spiral slag removers 8-1 are respectively connected with the two groups of slag discharging pipes 1-5, the output ends of the two groups of spiral slag removers 8-1 are respectively connected with the slag conveying belt conveyor 8-2, and waste slag is conveyed into the slag bin 8-3 through the slag conveying belt conveyor 8-2. Two sets of slag discharge pipelines are arranged, the slag discharge capacity is increased, the slag discharge pipes 1-5 are cooled by a water jacket, a circulating water line is arranged in the slag discharge pipelines, an online water flow indicator is added to the circulating water line, and the running state of materials in the furnace is judged according to the change of the quantity of circulating water.

Furthermore, the cooling device also comprises a circulating water pipe network, a water outlet of the circulating water pipe network is respectively connected with a lower water inlet of the first gas cooler 7-1 and an upper water inlet of the second gas cooler 7-2, and an upper water outlet of the first gas cooler 7-1 and a lower water outlet of the second gas cooler 7-2 are both connected with a water return port of the circulating water pipe network.

Further, the waste heat recovery device further comprises a desalination water pipe network and a desalination water pipe network, the desalination water pipe network is connected with the economizer 5-3, the desalination water temperature is increased through the economizer 5-3 and then is respectively sent into the steam pocket 5-4 and the desalination water pipe network, the steam pocket 5-4 is connected with the waste heat recoverer 5-2, steam generated by the steam pocket 5-4 is sent into the high-temperature preheater 5-1, air sent by the gasification fan 9 is received in the high-temperature preheater 5-1, and the steam and the air received in the high-temperature preheater 5-1 are sent into the air chamber of the gas producer 1 as gasification agents.

The pulverized coal is conveyed into a raw coal storage hopper 3-1 through a conveyor, pulverized coal with the particle size of 10 mm or less than 12mm is used as a raw material, the coal price is low, the yield is high, the raw material resources are rich, parameters such as moisture, ash content and the like of the coal are insensitive, various coal qualities such as lignite, bituminous coal and the like including low-grade coal can be used as gasification raw materials, and a good way is provided for efficiently utilizing the low-grade coal.

The coal powder enters a spiral conveyor 3-3 after passing through a small coal hopper 3-1 and a communicating flaring opening 3-2, the coal powder uniformly enters a dense-phase section 1-2 in a coal gas producer 1 through coal-spreading air to generate coal gas together with a gasifying agent, and the gasifying agent can be flexibly selected from air, air + water vapor, oxygen-enriched air/pure oxygen + steam according to different requirements of different fuels and users on the calorific value of the coal gas.

The coal gas generated in the coal gas producer 1 enters a coal gas inlet at the upper parts of two sets of cyclone separators 4 which are arranged in parallel from a coal gas outlet at the top end of the coal gas producer 1 through a pipeline, the solid in the coal gas is separated and enters a dense-phase section 1-2 of the coal gas producer 1 from a bottom outlet of the cyclone separators 4 through a pipeline, and the pipeline is provided with a non-mechanical return valve with high material passing;

the separated coal gas from the cyclone separator 4 enters a coal gas inlet at the top of the high-temperature preheater 5-1 from a coal gas outlet at the top through a pipeline, then enters a coal gas inlet at the bottom of the waste heat recoverer 5-2 from a coal gas outlet at the bottom of the high-temperature preheater 5-1 through a pipeline, the coal gas is sent into a coal gas inlet at the top of the economizer 5-3 from a coal gas outlet at the top of the waste heat recoverer 5-2 through a pipeline, and finally the coal gas is sent into a coal gas inlet at the lower part of the dust collector 2 from a coal gas outlet at the bottom of the economizer 5-3 through a pipeline;

desalted water in the desalted water pipe network enters the economizer 5-3 from a brine inlet below the economizer 5-3 through a pipeline, desalted water is preheated in the economizer 5-3 and then is divided into two parts to be directed, one part enters a desalted water pipe network from a brine outlet above the economizer 5-3 through a pipeline, the other part enters a brine inlet of the steam pocket 5-4 from a brine outlet above the economizer 5-3 through a pipeline, desalted water in the steam pocket 5-4 is sent into a brine inlet at the lower part of the waste heat recoverer 5-2 through a pipeline from a brine outlet above the economizer 5-3, steam is generated through heat exchange between coal gas and desalted water, the steam enters a steam inlet of the steam pocket 5-4 from a steam outlet above the waste heat recoverer 5-2 through a pipeline, the steam in the steam pocket 5-4 is sent into a steam inlet below the high-temperature preheater 5-1 through a pipeline from a steam outlet, the gasification fan 9 sends air into an air inlet below the high-temperature preheater 5-1 through a pipeline, the high-temperature preheater 5-1 raises the temperature of air and steam serving as a gasification agent to 650-700 ℃, then the gasification agent is sent into the air chamber from an outlet of the high-temperature preheater 5-1 through the pipeline, the heat of coal gas is utilized, the coal gas is combusted through the ignition burner 10, the gasification agent is respectively combusted and gasified in the coal gas generator 1, the gasification temperature is 950-1000 ℃, the gasification agent is preheated by the self heat of the coal gas, the cost is saved, the energy utilization rate is improved, and the pressure of the coal gas generator is 20-50 Kpa;

the dust removal device 2 is a bag-type dust remover, compressed nitrogen is introduced into the bag-type dust remover, the dedusted coal gas is sent into a cooling device from a coal gas outlet above the bag-type dust remover through a pipeline, and waste residues are sent into a pneumatic conveying system from the bottom of the dust removal device 2;

the dedusted coal gas is firstly sent into a coal gas inlet at the upper end of the first coal gas cooler 7-1 through a pipeline, the coal gas is sent into a coal gas inlet below the second coal gas cooler 7-2 through a pipeline from an outlet below the first coal gas cooler, and the cooled coal gas is sent out from a coal gas outlet above the second coal gas cooler 7-2 to enter a subsequent desulfurization process. The water outlet of the circulating water pipe network is respectively connected with the lower water inlet of the first gas cooler 7-1 and the upper water inlet of the second gas cooler 7-2, and the upper water outlet of the first gas cooler 7-1 and the lower water outlet of the second gas cooler 7-2 are both connected with the water return port of the circulating water pipe network, so that the gas is further gasified.

Low heating value gas composition analysis table:

Claims (10)

1. a low-calorific-value gas generating device for a photovoltaic glass melting furnace is characterized in that: comprises a coal feeding device, a gas producer (1), a gas separation device, a waste heat recovery device, a dust removal device (2) and a cooling device which are connected in sequence;

the coal feeding device comprises a raw coal storage hopper (3-1), a small coal hopper (3-2) and a spiral conveyor (3-3) which are sequentially connected, wherein a vertical discharging pipe (3-4) and an inclined discharging pipe (3-5) which are sequentially connected are arranged at the output end of the spiral conveyor (3-3);

the coal gas generating furnace (1) comprises a furnace body, the furnace body comprises a gas chamber (1-1), a dense phase section (1-2), an expanding section (1-3) and a dilute phase section (1-4) which are sequentially connected from bottom to top, two groups of lower slag pipes (1-5) are arranged at the bottom of the coal gas generating furnace (1), a slag discharging device is arranged at a discharging port of each lower slag pipe (1-5), a feeding pipe (1-6) with the same inclination angle as an inclined discharging pipe (3-5) is arranged at one side of each dense phase section (1-2), an expanding opening (1-6-1) is arranged at the bottom end of each feeding pipe (1-6), each feeding pipe (1-6) is connected with each dense phase section (1-2) through the expanding opening (1-6-1), and the tail end of each inclined discharging pipe (3-5) extends into the feeding pipe (1-6) through the top end of each feeding pipe (1-6) Performing the following steps;

the coal gas separation device comprises two sets of cyclone separators (4), and the two sets of cyclone separators (4) are arranged between the coal gas generating furnace (1) and the waste heat recovery device in parallel; the waste heat recovery device comprises a high-temperature preheater (5-1), a waste heat recoverer (5-2), an economizer (5-3), a steam pocket (5-4) and a desalination water pipe network, coal gas output by the coal gas separation device sequentially passes through the high-temperature preheater (5-1), the waste heat recoverer (5-2) and the economizer (5-3) and then enters the dust removal device (2), a diffusion pipeline is arranged on a connecting pipeline between the dust removal device (2) and the cooling device, and the other end of the diffusion pipeline is connected with a diffusion torch (6); the cooling device comprises a first gas cooler (7-1) and a second gas cooler (7-2) which are sequentially connected, and the gas output from the second gas cooler (7-2) goes to a desulfurization process.

2. The low heating value gas generation device for the photovoltaic glass melting furnace according to claim 1, characterized in that: the input end of the screw conveyor (3-3) is communicated with the bottom end of the small coal hopper (3-2) through a communication flaring (3-6), the communication flaring (3-6) is of a funnel-shaped structure, the size of an opening at the upper end of the communication flaring (3-6) is larger than that of an opening at the bottom end of the small coal hopper (3-2), and a loosening machine is arranged inside the small coal hopper (3-2).

3. The low heating value gas generation device for the photovoltaic glass melting furnace according to claim 1, characterized in that: a dust collector (3-7) is installed at the top of the raw coal storage hopper (3-1), a radar level gauge is installed on the raw coal storage hopper (3-1), and an adjusting valve is arranged between the raw coal storage hopper (3-1) and the small coal hopper (3-2).

4. The low heating value gas generation device for the photovoltaic glass melting furnace according to claim 1, characterized in that: the hypomere of perpendicular discharging pipe (3-4) is equipped with the expansion joint, the length that slope discharging pipe (3-5) stretched into in inlet pipe (1-6) accounts for the half of inlet pipe (1-6) length, inlet pipe (1-6) top is equipped with closing cap (1-8), be equipped with two sets of broadcast coal tuber pipes (1-7) that the symmetry set up on closing cap (1-8), be equipped with regulating plate (1-9) in inlet pipe (1-6) between closing cap (1-8) and slope discharging pipe (3-5), the equipartition is equipped with a plurality of ventilation holes of no less than four groups on regulating plate (1-9).

5. The low heating value gas generation device for the photovoltaic glass melting furnace according to claim 1, characterized in that: the furnace body inside lining is once only pour the shaping for refractory castable, the furnace body inside lining is equipped with high temperature resistant puller nail.

6. The low heating value gas generation device for the photovoltaic glass melting furnace according to claim 1, characterized in that: the height ratio of the dense phase section (1-2) to the diameter expanding section (1-3) is 1: 2.

7. The low heating value gas generation device for the photovoltaic glass melting furnace according to claim 1, characterized in that: the furnace is characterized in that an air distribution device (1-10) is installed on the lower portion of the inner cavity of the furnace body, the air distribution device (1-10) comprises an air distribution plate (1-10-1), a plurality of groups of air pipes (1-10-2) uniformly distributed on the air distribution plate (1-10-1) and air caps (1-10-3) fixed to the top ends of the air pipes (1-10-2) through full welding, 48 groups of air cap holes are uniformly distributed on the air distribution plate (1-10-1), and the air pipes (1-10-2) are respectively arranged in the air cap holes.

8. The low heating value gas generation device for the photovoltaic glass melting furnace according to claim 1, characterized in that: the slag discharging device comprises two groups of spiral slag removers (8-1), the input ends of the two groups of spiral slag removers (8-1) are respectively connected with the two groups of slag discharging pipes (1-5), the output ends of the two groups of spiral slag removers (8-1) are respectively connected with a slag conveying belt conveyor (8-2), and waste slag is conveyed into a slag bin (8-3) through the slag conveying belt conveyor (8-2).

9. The low heating value gas generation device for the photovoltaic glass melting furnace according to claim 1, characterized in that: the cooling device further comprises a circulating water pipe network, a water outlet of the circulating water pipe network is respectively connected with a lower water inlet of the first gas cooler (7-1) and an upper water inlet of the second gas cooler (7-2), and an upper water outlet of the first gas cooler (7-1) and a lower water outlet of the second gas cooler (7-2) are both connected with a water return port of the circulating water pipe network.

10. The low heating value gas generation device for the photovoltaic glass melting furnace according to claim 1, characterized in that: the waste heat recovery device further comprises a desalination water pipe network and a desalination water pipe network, the desalination water pipe network is connected with an economizer (5-3), the desalination water temperature is increased through the economizer (5-3) and then is respectively sent into a steam pocket (5-4) and a desalination water pipe network, the steam pocket (5-4) is connected with a waste heat recoverer (5-2), steam generated by the steam pocket (5-4) is sent into a high-temperature preheater (5-1), air sent by a gasification fan (9) is received in the high-temperature preheater (5-1), and the steam and the air received in the high-temperature preheater (5-1) are sent into a gas chamber of the gas producer (1) as gasification agents.

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