CN111925101A

CN111925101A - Double-heat-storage-chamber type powder flying melting glass kiln

Info

Publication number: CN111925101A
Application number: CN202010918493.2A
Authority: CN
Inventors: 陈志伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-13

Abstract

The invention discloses a double-regenerative-chamber type powder flying melting glass kiln, which belongs to the technical field of glass production. The invention can better solve the problems by adopting various technical schemes of arranging a scavenging gas input port on a public feeding pipeline or a raw material feeding pipeline, arranging a forced feeding device on a feeding port, arranging the raw material feeding pipeline as a movable feeding pipe and the like.

Description

Double-heat-storage-chamber type powder flying melting glass kiln

Technical Field

The invention belongs to the technical field of glass production, and particularly relates to a double-heat-storage-chamber glass kiln for melting powdery glass raw materials at high temperature in a flying state.

Background

In the field of glass production, powdered glass raw materials are dispersed in high-temperature gas to be melted to produce glass, the heat and mass transfer speed is high, and the energy consumption and the production cost can be reduced. The invention with application number 201510989155.7 discloses a method and a kiln for producing glass, which can melt powdery glass raw materials at high temperature in a flying state and recover waste heat generated by high-temperature reaction, wherein two regenerators are required to be used for preheating oxygen-containing gas and cooling high-temperature waste gas in turn, two smelters are used for feeding materials in turn, and the inner walls of feeding holes of the two smelters are often provided with melt to be condensed and bonded to block the feeding holes, so that the smoothness of feeding of the glass raw materials is influenced. When the feeding is not smooth, the feeding amount of raw materials can be reduced, the yield is reduced, and the stability of the working condition of the kiln is influenced; when the blockage is serious, the material can not be fed, and the furnace can only be shut down for maintenance, thereby causing great economic loss.

Disclosure of Invention

In order to solve the above problems, the inventors have carefully studied and found that: the regenerative chambers are used for reversing once every a period of time, the direction of air flow in the smelting furnaces and the regenerative chambers is changed into the direction opposite to that before reversing every reversing, so that the two regenerative chambers can be respectively used for preheating oxygen-containing gas and cooling high-temperature waste gas in turn, and the two smelting furnaces need to feed in turn; the smelting furnace connected with the regenerative chamber for preheating the oxygen-containing gas is in a feeding state, the fuel and the preheated oxygen-containing gas are rapidly mixed and combusted in a hearth of the smelting furnace to reach over 1450 ℃, the powdery glass raw material is dispersed in high-temperature gas and is in a flying state, the heat and mass transfer efficiency is very high, and the powdery glass raw material is rapidly melted into liquid molten dust; the liquid molten dust washes the furnace wall along with the flow of the high-temperature gas in the hearth, most of the liquid molten dust adheres to the furnace wall, the liquid molten dust flows downwards to a liquid outlet near the bottom of the hearth to be output under the action of gravity, the high-temperature gas output from an exhaust port of the furnace still carries a small part of the molten dust, but then the high-temperature gas enters a second furnace, the second furnace is in a feeding stop state, the small part of the molten dust carried by the high-temperature gas adheres to the furnace wall of the second furnace to be purified and separated, and the purified high-temperature gas is input into a heat storage chamber for cold and accurate high-temperature waste gas to recover heat; when the direction of the furnace is changed again, the new powder glass raw material can be stuck on the melt stuck on the inner wall of the feed inlet and reduce the temperature of the inner wall of the feed inlet, so that the stuck melt can be cooled and solidified.

In order to solve the above problems, the inventors have repeatedly studied and experimented and obtained a new scheme:

a double-heat-storage-chamber type powder flying melting glass kiln comprises two smelting furnaces, raw material feeding equipment and an oxygen-containing gas preheating system; the oxygen-containing gas preheating system comprises two heat storage chambers, two gas reversing flashboards, two flue gas reversing flashboards, oxygen-containing gas input equipment and flue gas discharge equipment; one of the two regenerators is used for preheating the oxygen-containing gas and the other is used for cold-determining the high-temperature exhaust gas, the regenerator used for preheating the oxygen-containing gas has an oxygen-containing gas inlet and a preheated gas outlet, and the regenerator used for cold-determining the high-temperature exhaust gas has a high-temperature exhaust gas inlet and a cold-determining exhaust gas outlet.

The connection mode of each component included in the oxygen-containing gas preheating system is as follows: the oxygen-containing gas input device is communicated with the oxygen-containing gas inlet through one gas reversing flashboard in an open state and is connected with the cold waste gas outlet through the other gas reversing flashboard in a closed state; the flue gas discharge equipment is communicated with the cold waste gas outlet through one flue gas reversing gate plate in an open state and is connected with the oxygen-containing gas inlet through the other flue gas reversing gate plate in a closed state.

The smelting furnace comprises a feeding reversing gate, a raw material feeding pipeline, an air inlet, an air outlet and a feeding hole; the raw material feeding pipeline of the smelting furnace comprises an outlet end and an inlet end, wherein the outlet end of the raw material feeding pipeline is communicated with a feeding hole of the smelting furnace, and the inlet end of the raw material feeding pipeline is connected with a feeding reversing gate of the smelting furnace; the feeding reversing gates of the two smelting furnaces are respectively connected with raw material feeding equipment through a common feeding pipeline; the preheating gas outlet is communicated with the gas inlet of one smelting furnace, the feeding reversing gate of the smelting furnace is in an open state, the gas outlet of the smelting furnace is communicated with the gas inlet of the other smelting furnace through the gas flow channel, the feeding reversing gate of the other smelting furnace is in a closed state, and the gas outlet of the other smelting furnace is communicated with the high-temperature waste gas inlet; and a purge gas input port is arranged on the common feed pipeline.

Compared with the prior art, the sweeping gas in the scheme has the sweeping effect on the inner wall of the feeding hole, so that the powdery glass raw material is prevented from being adhered to the inner wall of the feeding hole, the fusion bonding is avoided, and the blockage can be avoided.

The inventor researches and discovers that: under the ideal state, the melting dust that high-temperature gas carried behind the furnace purification separation of two smelting pots, high-temperature gas can reach the regenerator recovery heat that is used for cold high-temperature waste gas of confirming again after very clean degree, under this condition, adopts above-mentioned technical scheme can solve the problem that the feed inlet blockked up betterly. However, such an ideal degree may not be achieved, and 100% of the molten dust may not be completely separated, and a very small amount of molten dust that is difficult to completely separate may not be completely separated, may fly into the feed port of the second melting furnace (in a feed stop state) and adhere to the inner wall of the feed port, and may cause clogging of the feed port after a relatively long time of accumulation.

In order to solve the above problems, the inventors have repeatedly studied and experimented and obtained a second new solution:

a double-heat-storage-chamber type powder flying melting glass kiln comprises two smelting furnaces and an oxygen-containing gas preheating system, wherein each part and the connection mode of the oxygen-containing gas preheating system are the same as those of the previous scheme, and the difference is that:

the smelting furnace comprises raw material feeding equipment, an air inlet, an air outlet, a feeding hole and a raw material feeding pipeline; the raw material feeding pipeline of the smelting furnace comprises an outlet end and an inlet end, wherein the outlet end of the raw material feeding pipeline is communicated with the feeding hole of the smelting furnace, and the inlet end of the raw material feeding pipeline is communicated with raw material feeding equipment of the smelting furnace; the preheating gas outlet is communicated with the gas inlet of one smelting furnace, the raw material feeding equipment of the smelting furnace is in a starting feeding state, the gas outlet of the smelting furnace is communicated with the gas inlet of the other smelting furnace through the gas flow channel, the raw material feeding equipment of the other smelting furnace is in a stopping feeding state, and the gas outlet of the other smelting furnace is communicated with the high-temperature waste gas inlet; and a purge gas inlet is arranged on the raw material feeding pipeline.

Because the raw material feeding pipelines of the two smelting furnaces are provided with the blowing gas inlet, when the raw material feeding equipment of the other smelting furnace is in a feeding stop state, the blowing gas is also input into the hearth from the feeding hole of the smelting furnace, so that high-temperature molten dust which cannot be completely purified by the hearth is prevented from flying into the feeding hole, the high-temperature molten dust is prevented from being adhered to the inner wall of the feeding hole to cause blockage, the inner wall of the feeding hole can be cooled, and the inner wall of the feeding hole is prevented from being heated to the melting temperature of powder.

In order to solve the above problems, the inventors have repeatedly studied and experimented and obtained a third new solution:

the smelting furnace comprises raw material feeding equipment, an air inlet, an air outlet, a feeding hole and a raw material feeding pipeline; the raw material feeding pipeline of the smelting furnace comprises an outlet end and an inlet end, wherein the outlet end is connected with a feeding hole of the smelting furnace, and the inlet end is communicated with raw material feeding equipment of the smelting furnace; the preheating gas outlet is communicated with the gas inlet of one smelting furnace, the raw material feeding equipment of the smelting furnace is in a starting feeding state, the gas outlet of the smelting furnace is communicated with the gas inlet of the other smelting furnace through the gas flow channel, the raw material feeding equipment of the other smelting furnace is in a stopping feeding state, and the gas outlet of the other smelting furnace is communicated with the high-temperature waste gas inlet; a forced feeding device is arranged on the feeding hole; the forced feeding device is a device which pushes the powdery glass raw material into the feeding hole from the raw material feeding pipeline through mechanical thrust.

In order to solve the above problems, the inventors have repeatedly studied and experimented to obtain a fourth new solution:

the smelting furnace comprises raw material feeding equipment, a raw material feeding pipeline, an air inlet, an air outlet and a feeding hole; the raw material feeding pipeline is a movable feeding pipe, and the outlet end of the movable feeding pipe is movably connected with the feeding hole; the preheating gas outlet is communicated with the gas inlet of one smelting furnace, the feed inlet of the smelting furnace is communicated with the raw material feeding equipment through a movable feed pipe, the gas outlet of the smelting furnace is communicated with the gas inlet of the other smelting furnace through a gas flow channel, and the gas outlet of the other smelting furnace is communicated with the high-temperature waste gas inlet; the feed inlet of the other smelting furnace is disconnected with the outlet end of the movable feed pipe.

Drawings

The double-heat-storage-chamber type powder flying melting glass kiln and the beneficial technical effects thereof are described in detail below with reference to the accompanying drawings and the specific embodiments.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 schematically shows a detail of the area indicated by the dashed circle 24 in fig. 1.

Fig. 3 schematically shows a detail of the area indicated by the dashed circle 25 in fig. 1.

FIG. 4 is a partial structural diagram of a second embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 6 schematically shows a detail of the area indicated by the dashed circle 30 in fig. 5.

FIG. 7 is a partial structural diagram of a fourth embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a fifth embodiment of the present invention.

Fig. 9 schematically shows a detail of the region indicated by the dashed circle 41 in fig. 8.

Fig. 10 schematically shows a detail of the region indicated by the dashed circle 42 in fig. 8.

FIG. 11 is a partial structural diagram of a sixth embodiment of the present invention.

Fig. 12 and 13 are partial structural schematic views of a seventh embodiment of the invention.

Fig. 14 and 15 are partial schematic structural views of an eighth embodiment of the invention.

Fig. 16 is a schematic structural view of a ninth embodiment of the present invention.

Detailed Description

Example 1

Referring to fig. 1, details of the regions represented by

dashed circles

24, 25 in fig. 1 are seen in fig. 2, 3, respectively. FIG. 1 shows a double-regenerator type flying powder melting glass furnace, which comprises two melting furnaces, a raw material feeding device 1 and an oxygen-containing gas preheating system, wherein the oxygen-containing gas preheating system comprises two regenerators 3, two gas reversing gate plates 4, two flue gas reversing gate plates 5, an oxygen-containing gas input device 6 and a flue gas exhaust device 7; one of the two regenerators 3 is used for preheating the oxygen-containing gas and the other is used for cold confirmation of the high temperature exhaust gas, the regenerator 3 for preheating the oxygen-containing gas has an oxygen-containing gas inlet 18 and a preheated gas outlet 19, and the regenerator 3 for cold confirmation of the high temperature exhaust gas has a high temperature exhaust gas inlet 20 and a cold confirmation exhaust gas outlet 21.

The connection mode of the components of the oxygen-containing gas preheating system has the following characteristics: the oxygen-containing gas input device 6 is communicated with the oxygen-containing gas inlet 18 through one gas reversing shutter 4 in an open state (the gas reversing shutter 4 on the right side in fig. 1) and is connected with the cold waste gas outlet 21 through the other gas reversing shutter 4 in a closed state (the gas reversing shutter 4 on the left side in fig. 1); the flue gas discharge device 7 communicates with the cold flue gas outlet 21 via one flue gas reversing damper 5 in the open state (flue gas reversing damper 5 on the left side of fig. 1) and is connected with the oxygen-containing gas inlet 18 via another flue gas reversing damper 5 in the closed state (flue gas reversing damper 5 on the right side of fig. 1).

The smelting furnace comprises a feeding reversing gate 8, a raw material feeding pipeline 9, an air inlet 10, an air outlet 12 and a feeding hole 13; the raw material feed pipe 9 of the furnace comprises an outlet end 15 and an inlet end 16, the outlet end 15 of the raw material feed pipe is communicated with the feed inlet 13 of the furnace, and the inlet end 16 of the raw material feed pipe is connected with the feed reversing gate 8 of the furnace; the feeding reversing gates 8 of the two smelting furnaces are respectively connected with the raw material feeding device 1 through a common feeding pipeline 17; the preheated gas outlet 19 is communicated with the gas inlet 10 of one furnace, the feed reversing gate 8 (the feed reversing gate 8 on the right side of fig. 2) of the furnace is in an open state, the gas outlet 12 of the furnace is communicated with the gas inlet 10 of the other furnace through the gas flow passage 22, the feed reversing gate 8 (the feed reversing gate 8 on the left side of fig. 2) of the other furnace is in a closed state, and the gas outlet 12 of the other furnace is communicated with the high-temperature exhaust gas inlet 20; a purge gas input port 23 is provided on the common feed conduit 17.

The gas reversing flashboards 4 and the flue gas reversing flashboards 5 are used for reversing operation, when one of the gas reversing flashboards 4 and one of the flue gas reversing flashboards 5 are in an opening state, the other gas reversing flashboard 4 and the other flue gas reversing flashboard 5 are in a closing state. The gas reversing gate plate 4 and the smoke reversing gate plate 5 are reversed once every a period of time, the gas reversing gate plate 4 and the smoke reversing gate plate 5 which are in an open state before reversing are in a closed state after reversing, and the gas reversing gate plate 4 and the smoke reversing gate plate 5 which are in a closed state before reversing are in an open state after reversing; the feed changeover shutter 8 in the opened state before the changeover becomes the closed state after the changeover, and the feed changeover shutter 8 in the closed state before the changeover becomes the opened state after the changeover.

The reversing operation is generally performed once every 10 to 60 minutes.

Example 1 compared with the prior art, since the common feeding pipe 17 is provided with the purge gas inlet 23, the purge gas and the powdered glass raw material fed from the raw material feeding apparatus 1 are mixed and fed into the furnace 11 from the opened raw material feeding direction changing gate 8 and the raw material feeding pipe 9 communicating with the same, the feed port 13, and the purge gas, in turn, are fed into the furnace 11 from the opened raw material feeding direction changing gate 8, the purge gas has a purging effect on the inner wall 29 of the feed port 13 to prevent the powdered glass raw material from adhering to the inner wall 29 of the feed port 13, after the raw material feeding direction changing gate 8 communicating with the raw material feeding pipe 9 is turned to be closed, the raw material feeding pipe 9 does not feed the raw material and the purge gas into the furnace 11 (as shown in fig. 3), the high temperature gas flow in the furnace 11 heats the temperature at the inner wall 29 of the feed port 13 to above the melting temperature of the, the fusion bonding can not be formed, and the function of avoiding blockage is achieved.

Example 2

Referring to FIGS. 1 and 4, the area indicated by a dotted circle 24 in FIG. 1 is replaced by an area indicated by a dotted circle 26 in FIG. 4 to constitute a double-regenerative-chamber type pulverized material flying melting glass furnace which is substantially the same in structure as that of example 1 except that a purge gas inlet pipe 27 is connected to a purge gas inlet port 23 provided in the common feed pipe 17; a valve 28 is provided on the purge gas feed line 27.

Example 3

Referring to fig. 5, the details of the area represented by the dashed circle 30 in fig. 5 refer to fig. 6. FIG. 5 shows a flying melting glass furnace of powder material of a double-regenerative chamber type, which comprises two melting furnaces and an oxygen-containing gas preheating system similar to that of example 1, except that:

the smelting furnace comprises a raw material feeding device 1, an air inlet 10, an air outlet 12, a feeding hole 13 and a raw material feeding pipeline 9; the raw material feeding pipe 9 of the melting furnace comprises an outlet end 15 and an inlet end 16, wherein the outlet end 15 is communicated with the feeding hole 13 of the melting furnace, and the inlet end 16 is communicated with the raw material feeding device 1 of the melting furnace; the preheated gas outlet 19 is communicated with the gas inlet 10 of one melting furnace, the raw material feeding device 1 of the melting furnace is in a starting feeding state, the gas outlet 12 of the melting furnace is communicated with the gas inlet 10 of the other melting furnace through the gas flow passage 22, the raw material feeding device 1 of the other melting furnace is in a stopping feeding state, and the gas outlet 12 of the other melting furnace is communicated with the high-temperature waste gas inlet 20; the raw material feed pipe 9 is provided with a purge gas inlet 23.

Example 4

Referring to FIGS. 5 and 7, a double-regenerative-chamber type flying powder melting glass furnace, in which the region indicated by the dotted circle 30 in FIG. 5 is replaced by the region indicated by the dotted circle 31 in FIG. 7, is constituted substantially the same as that of example 3 except that a purge gas feed pipe 27 is connected to a purge gas feed port 23 provided in a raw material feed pipe 9; the purge gas feed line 27 is provided with a valve 28.

A valve 28 arranged on the purge gas input pipeline 27 can open or close the purge gas and can also adjust the dosage of the purge gas to ensure that the dosage of the purge gas reaches a proper dosage, so as to avoid that the inner wall 29 of the feed port 13 cannot be purged completely when the dosage is too low; the condition that the consumption of the purge gas is too high and the waste is caused can be avoided; the purge gas is not preheated, the temperature is lower, and the temperature of the hearth can be reduced when the use amount is too high.

The feed port 13 for stopping the feeding does not require a large gas velocity to prevent the molten dust from flying in, and the purge gas amount can be adjusted small by the valve 28. The feeding hole 13 which is feeding does not need to continuously input purge gas, and the valve 28 is opened to purge powder adhered to the inner wall 29 of the feeding hole before reversing, and the valve 28 can be closed after purging for 3-5 seconds generally. For the scheme of embodiment 2, the valve 28 is opened after the direction is changed, the feed inlet 13 to be fed is purged to cool the inner wall 29 to below the melting temperature of the powder, the raw material feeding device 1 is started to feed the powder so as to prevent the newly-incoming powder from being adhered to the inner wall 29 in a high-temperature state to be melted and adhered, and the valve 28 can be closed after purging for 5-10 seconds. In order to reduce the amount of the purge gas, the operator always operates in the above manner, and the purge gas is not continuously input to the feeding port 13, but once the operation is finished, the valve 28 fails to close, and the purge gas is only continuously input to the feeding port 13, so that the production time is 2 days, and the qualification rate of the glass product is improved by 2.7 percent compared with the original qualification rate in the two days. After repeated 2-month comparison experiments, the inventor finds that the qualification rate of the glass product can be improved by 3.6% compared with the prior operation mode by continuously inputting the purge gas into the feeding hole 13.

The inventor carefully researches and discovers that because the powdery raw material has viscosity, if the blowing gas is not input into the feeding hole 13, the powdery raw material input into the hearth from the feeding hole 13 is agglomerated, after the agglomerated powder enters the hearth, the agglomerated powder cannot be blown away by high-temperature gas flow in the furnace, the surface layer of the powder agglomerate is rapidly melted and changed into powder agglomerate wrapped by molten liquid, the powder agglomerate wrapped by the molten liquid is more difficult to blow away in the gas flow in the hearth, the mass transfer and heat transfer reaction speed of the powder in the powder agglomerate and the external high-temperature gas flow is very slow, the powder in the powder agglomerate cannot be sufficiently melted, the powder is discharged out of a smelting furnace, and in products such as plate glass, bottle glass and the like which are finally formed, the inclusion defect in the glass product is formed, and the product is an unqualified product. If the blowing gas is continuously input into the feeding hole 13 which is feeding, the blowing gas plays a role in impacting and blowing away the powder mass when entering the raw material feeding pipeline 9, so that the powdery glass raw material is fully dispersed in the high-temperature airflow in the hearth, fine powder particles are fully contacted with the high-temperature airflow, the heat and mass transfer speed is very high, the melting reaction can be fully carried out, qualified molten glass is formed, the inclusion defect caused by powder agglomeration is avoided, the product percent of pass is improved, and unexpected technical effects are obtained. Therefore, the present invention preferably continuously feeds purge gas to the feed port 13 being fed.

In the above embodiment, the purge gas input port 23 is connected to a purge gas input device, i.e., the purge gas can be input, and the purge gas can be oxygen-containing gas or nitrogen gas. The oxygen-containing gas comprises air or oxygen-enriched air.

The use of air as the purge gas is relatively easy to obtain, and only a blower needs to be connected to the purge gas input port 23, or compressed air may be used for the input. If the furnace pressure in the furnace 11 is controlled to a proper negative pressure value (corresponding to the pressure in the furnace 11 being less than the external pressure and having a proper pressure difference), the raw material feeding pipe 9 or the common feeding pipe 17 can be used as a blowing gas input device to suck the external air by opening a port, thereby playing the role of blowing gas and being very convenient. Therefore, air is preferred as the purge gas.

Example 5

Referring to fig. 8, details of the regions represented by dashed

circles

41, 42 in fig. 8 refer to fig. 9, 10, respectively. FIG. 8 shows a flying melting glass furnace of powder material of a double-regenerative chamber type, which comprises two melting furnaces and an oxygen-containing gas preheating system similar to that of example 1, except that:

the smelting furnace comprises a raw material feeding device 1, an air inlet 10, an air outlet 12, a feeding hole 13 and a raw material feeding pipeline 9; the raw material feeding pipe 9 of the melting furnace comprises an outlet end 15 and an inlet end 16, wherein the outlet end 15 is connected with the feeding hole 13 of the melting furnace, and the inlet end 16 is communicated with the raw material feeding device 1 of the melting furnace; the preheated gas outlet 19 is communicated with the gas inlet 10 of one melting furnace, the raw material feeding device 1 of the melting furnace is in a starting feeding state, the gas outlet 12 of the melting furnace is communicated with the gas inlet 10 of the other melting furnace through the gas flow passage 22, the raw material feeding device 1 of the other melting furnace is in a stopping feeding state, and the gas outlet 12 of the other melting furnace is communicated with the high-temperature waste gas inlet 20; the feed opening 13 is provided with a forced feeding device.

The forced feeding device comprises a push rod 35, a rod containing cavity 36, a piston 37 and a driving mechanism 38 for pushing the piston 37 to reciprocate; the rod holding cavity 36 is connected with the inlet end 16 of the raw material feeding pipeline 9, and the outer diameter of the push rod 35 is matched with the inner diameter of the raw material feeding pipeline 9; the pushrod 35 includes a trailing end 39 and a leading end 40; the tail end 39 of the push rod 35 is connected with the piston 37, the top end 40 of the push rod 35 is pushed by the piston 37 to retreat into the rod containing cavity 36 (shown in figure 10) when reaching the reciprocating retraction end position, and reaches the feed port 13 (shown in figure 9) when reaching the reciprocating advancement end position; the rear end 39 of the push rod 35 is located in the rod receiving chamber 36 when pushed by the piston 37 to the advanced end position of the reciprocating motion.

The above-mentioned forced feeding device is a device for pushing the powdery glass raw material into the feed port 13 from the raw material feed pipe by mechanical pushing force, and the push rod 35 can perform continuous reciprocating motion to forcibly push the powdery glass raw material entering the raw material feed pipe 9 from the inlet end 16 into the feed port 13.

When the inner wall 29 of the feeding hole 13 is provided with the melt, the melt is condensed and bonded, and the strength after condensation and bonding is extremely high, so that the melt is difficult to remove, and the melt is accumulated continuously to cause blockage. The push rod 35 can continuously and forcibly push the powdery glass raw material and the melt into the hearth 11 from the feed inlet 13, so that a small amount of melt adhered to the inner wall 29 can be removed in time, and the problems that the melt is difficult to remove after being condensed and adhered and causes blockage are avoided.

Example 6

Referring to FIGS. 5 and 11, a double-regenerative-type flying powder melting glass furnace of the type having a structure in which the area indicated by the dotted circle 30 in FIG. 5 is replaced by the area indicated by the dotted circle 70 in FIG. 11 is constructed, which is substantially the same as that of example 5 except that it has a forced feeding device comprising a spring-like spiral blade 67 and a shaft 68 rotated by a mechanical drive, unlike example 5; the helical blade 67 is located in the raw material feed pipe 9, the shaft 68 is located on the center line of the helical blade 67, and the shaft 68 is fixedly connected with the helical blade 67.

The mechanism for rotating the drive shaft 68 is a motor 69, and the shaft 68 is connected to the motor 69.

The forced feeding device is also a device for pushing the powdery glass raw material into the feeding hole 13 from the raw material feeding pipeline through mechanical thrust, the helical blade 67 pushes the powdery glass raw material to the feeding hole 13 through the rotating direction of the shaft 68, and when the inner wall 29 of the feeding hole 13 is provided with a melt, the helical blade 67 can forcibly push the powdery glass raw material and the melt into the hearth 11 together, so that blockage can be avoided.

Example 7

Referring to FIGS. 8, 12 and 13, the areas indicated by the dotted circles 41 and 42 in FIG. 8 were replaced by the areas indicated by the dotted circles 53 and 54 in FIGS. 12 and 13, respectively, to constitute a double-regenerative-chamber type pulverized material flight melting glass furnace comprising two melting furnaces and an oxygen-containing gas preheating system identical to that of example 1, except that:

the smelting furnace comprises raw material feeding equipment 1, a raw material feeding pipeline, an air inlet 10, an air outlet 12 and a feeding hole 13; the raw material feeding pipeline is a movable feeding pipe 43, and an outlet end 44 of the movable feeding pipe 43 is movably connected with the feeding hole 13; the preheated gas outlet 19 is communicated with the gas inlet 10 of one melting furnace, the feed port 13 of the melting furnace is communicated with the raw material feeding device 1 through a movable feed pipe 43, the gas outlet 12 of the melting furnace is communicated with the gas inlet 10 of the other melting furnace through a gas flow passage 22, and the gas outlet 12 of the other melting furnace is communicated with the high-temperature waste gas inlet 20; the feed port 13 of the other furnace is disconnected from the outlet end 44 of the mobile feed pipe 43.

The movable feed pipe 43 comprises a fixed pipe 47, a movable pipe 46, a shutter plate 48, a piston 49 and a driving mechanism 50 for pushing the piston 49 to reciprocate; the stationary tube 47 includes an inlet end 45, an outlet 52; the inlet end 45 is communicated with the raw material feeding equipment 1; the moving tube 46 includes an inlet 51, an outlet 44; the shutter plate 48 is fixedly connected to the outer side of the inlet 51 of the moving pipe 46; the piston 49 is connected with the moving pipe 46; when the moving pipe 46 is pushed to the pushing end position of the reciprocating motion by the piston 49, the outlet end 44 is communicated with the feed port 13 (as shown in fig. 13), and the inlet 51 is communicated with the outlet 52; when the movable tube 46 is pushed by the piston 49 to the retracted end position of the reciprocating movement, the outlet end 44 is disconnected from the feed port 13 (as shown in fig. 12), the inlet 51 is disconnected from the outlet 52, and the shutter 48 covers the outlet 52.

It is difficult to know the specific degree of clogging without disconnecting the feed opening 13 from the raw material feed conduit 9. In this embodiment, the operator can disconnect the feeding port 13 that has stopped feeding from the movable feeding pipe 43 at any time, check whether there is the condensation of the molten material on the inner wall 29 of the feeding port 13, and is convenient for the operator to clean the material adhered on the inner wall 29 with a conventional tool such as an electric drill, an iron brush or a grinding wheel, so as to avoid blocking when more and more adhered materials are used. However, the disadvantage is that after the connection is broken, the feed port 13 is communicated with the outside, which causes heat loss of the hearth to the outside; when the pressure in the furnace is higher than the external pressure, the high-temperature gas in the furnace can be leaked. Therefore, the furnace pressure should be adjusted to be slightly lower than the outside pressure when the connection is disconnected.

Example 8

Figures 14 and 15 schematically show a mobile feed pipe and a gate. The areas indicated by the dotted circles 41 and 42 in FIG. 8 were replaced by the areas indicated by the dotted circles 65 and 66 in FIGS. 14 and 15, respectively, to constitute a double-regenerative-chamber type powder flight melting glass furnace which has substantially the same structure as that of example 7 except that the feed port 13 thereof is provided with the shutter 32 and which has the movable feed pipe 43 of a different structure from that of example 7.

Referring to fig. 14 and 15, the traveling feed tube 43 includes an inner tube 55, an outer tube 56, an outlet end 44, an inlet end 45, a crossbar 57, a piston 58, and a drive mechanism 59 for reciprocating the piston 58; the inlet end 45 is communicated with the raw material feeding equipment 1; one end of the cross arm 57 is connected with the outer tube 56, and the other end is connected with the piston 58; the outer tube 56 is sleeved on the inner tube 55, and an oil seal 60 is arranged in a gap between the outer tube and the inner tube; the outer tube 56 is pushed by the piston 58 and the cross arm 57 to the advanced end position of the reciprocating movement, the outlet end 44 is disconnected from the feed port 13 and is away from the feed port 13 (as shown in fig. 14), and the outlet end 44 is communicated with the feed port 13 when pushed by the piston 58 and the cross arm 57 to the retracted end position of the reciprocating movement (as shown in fig. 15). The gate 32 comprises a gate plate 61, a cross arm 62, a piston 63 and a driving mechanism 64 for pushing the piston 63 to reciprocate; one end of the cross arm 62 is connected with the gate plate 61, and the other end is connected with the piston 63; the shutter plate 61 covers the feed port 13 when the shutter plate 61 is pushed to the reciprocation advancing end position by the piston 63 and the crossbar 62, and the shutter plate 61 is separated from the feed port 13 when the shutter plate 61 is pushed to the reciprocation retracting end position by the piston 63 and the crossbar 62.

The gate 32 of the feed port 13 communicating with the movable feed pipe 43 is opened (as shown in fig. 15) to allow the raw material to smoothly enter the furnace; the gate 32 of the inlet port 13 disconnected from the outlet end 44 of the movable type feed pipe 43 is closed (as shown in fig. 14) to prevent the high temperature gas in the furnace from leaking out, and the operator can easily open the gate 32 and close the same after checking or cleaning the material adhered to the inner wall 29 of the inlet port.

In the above embodiment, the gas flow path 22 may be replaced with an adhesion separator disclosed in the invention of application No. 201510989155.7, which has a gas inlet and a gas outlet, and is capable of inputting the high-temperature gas carrying the molten dust from the gas inlet and outputting the purified high-temperature gas from the gas outlet, and therefore, the adhesion separator essentially has the function of allowing the high-temperature gas flow to pass through the gas flow path 22, and belongs to a gas flow path. The use of the above-described adhesive separator is very simple and is illustrated by example 9 below:

example 9

Referring to fig. 16, details of the area represented by the dashed circle 30 in fig. 16 refer to fig. 6. FIG. 16 shows a double-regenerative-chamber type pulverized material flying melting glass furnace which is substantially the same in structure as that of example 3 (FIG. 5) except that this embodiment replaces the gas flow path 22 of example 3 with an adhesion separator represented by a dotted line frame 71, the adhesion separator 71 of FIG. 16 comprising a gas inlet 72 and a gas outlet 73, the gas inlet 72 communicating with the gas outlet 12 of one melting furnace, and the gas outlet 73 communicating with the gas inlet 10 of the other melting furnace.

In fig. 16, the adhesion separator 71 and the two melting furnaces form a series structure, which can purify the molten dust in the high-temperature gas more thoroughly, and can better prevent the molten dust from entering the feeding port in the feeding stop state, thereby preventing or alleviating the blockage.

In the above embodiment, the flue gas discharging device 7 may adopt an induced draft fan or a chimney, and the oxygen-containing gas input device 6 may adopt an air blower, and the difference between the suction force of the flue gas discharging device 7 and the pressure of the oxygen-containing gas input device 6 is adjusted, so that any value from negative pressure to positive pressure of the furnace pressure can be controlled; when the flue gas exhaust equipment 7 is a draught fan or a chimney, an air inlet is arranged as oxygen-containing gas input equipment 6, and then external air can be input; if the oxygen-containing gas input device 6 adopts a blower, the flue gas can be discharged by only arranging an exhaust port as the flue gas discharge device 7; the furnace also comprises a hearth 11 and a furnace wall 14, and the feed inlet 13, the air inlet 10 and the air outlet 12 are respectively arranged on the furnace wall 14; the raw material feeding device 1 is used for inputting powdery glass raw materials into a hearth 11 through a feeding hole 13; the raw material feeding device 1 may adopt a device for feeding a powdery material such as an impeller feeder, a screw feeder, etc., or may use other conventional devices as long as it can feed a powdery glass raw material into the common feeding pipe 17 or the inlet end 16 of the raw material feeding pipe 9; the double-heat-storage-chamber type powder flying melting glass kiln further comprises a liquid discharge port 2, wherein the liquid discharge port 2 is positioned at the bottom of the hearth 11 or near the bottom, and molten glass liquid adhered to the furnace wall 14 flows to the liquid discharge port 2 under the action of gravity and is output; the hearth 11 is basically cylindrical, and the air inlet 10 and the air outlet 12 are respectively positioned near two ends of the cylindrical hearth 11 and are connected with the two ends in a tangent mode; the feed opening 13 is located substantially in the center of the top of the cylindrical furnace 11.

In the above examples, the powdered glass material was a conventional glass material in a powder state. The fuel can adopt petroleum coke powder, natural gas, coal gas or other liquid fuels, if the petroleum coke powder or the gas fuels are adopted, the petroleum coke powder or the gas fuels can be mixed in the powdery glass raw materials and input into the hearth from the raw material feeding pipeline, and the gas fuels can be input by opening a gas fuel input port on the raw material feeding pipeline, so that the device is very convenient. The oxygen-containing gas may be air or oxygen-enriched air.

The present invention is not limited to the above-described embodiments. Appropriate changes and modifications to the embodiments described above will be apparent to those skilled in the art in light of the above disclosure and teachings, and are intended to be included within the scope of the invention as claimed. Certain terminology is used in the description for convenience only and is not limiting.

Claims

1. The utility model provides a two regenerator type powder flight melting glass kilns, it includes that two smelting furnaces, raw materials feeder equipment and oxygen-containing gas preheat the system, oxygen-containing gas preheats the system and includes two regenerators, two gaseous switching-over flashboards, two flue gas switching-over flashboards, oxygen-containing gas input device and flue gas exhaust apparatus, its characterized in that: when one of the two regenerators is used for preheating the oxygen-containing gas, the other regenerator is used for cold determination of high-temperature exhaust gas, the regenerator used for preheating the oxygen-containing gas is provided with an oxygen-containing gas inlet and a preheated gas outlet, and the regenerator used for cold determination of the high-temperature exhaust gas is provided with a high-temperature exhaust gas inlet and a cold determination exhaust gas outlet; the oxygen-containing gas input device is communicated with the oxygen-containing gas inlet through one gas reversing flashboard in an open state and is connected with the cold waste gas outlet through the other gas reversing flashboard in a closed state; the flue gas discharge equipment is communicated with the cold waste gas outlet through one flue gas reversing gate plate in an open state and is connected with the oxygen-containing gas inlet through the other flue gas reversing gate plate in a closed state; the smelting furnace comprises a feeding reversing gate, a raw material feeding pipeline, an air inlet, an air outlet and a feeding hole; the raw material feeding pipeline of the smelting furnace comprises an outlet end and an inlet end, wherein the outlet end of the raw material feeding pipeline is communicated with a feeding hole of the smelting furnace, and the inlet end of the raw material feeding pipeline is connected with a feeding reversing gate of the smelting furnace; the feeding reversing gates of the two smelting furnaces are respectively connected with raw material feeding equipment through a common feeding pipeline; the preheating gas outlet is communicated with the gas inlet of one smelting furnace, the feeding reversing gate of the smelting furnace is in an open state, the gas outlet of the smelting furnace is communicated with the gas inlet of the other smelting furnace through the gas flow channel, the feeding reversing gate of the other smelting furnace is in a closed state, and the gas outlet of the other smelting furnace is communicated with the high-temperature waste gas inlet; and a purge gas input port is arranged on the common feed pipeline.

2. The utility model provides a two regenerator type powder flight melting glass kilns, it includes two smelters and oxygen-containing gas system of preheating, oxygen-containing gas system of preheating includes two regenerators, two gaseous switching-over flashboards, two flue gas switching-over flashboards, oxygen-containing gas input device and flue gas exhaust apparatus, its characterized in that: when one of the two regenerators is used for preheating the oxygen-containing gas, the other regenerator is used for cold determination of high-temperature exhaust gas, the regenerator used for preheating the oxygen-containing gas is provided with an oxygen-containing gas inlet and a preheated gas outlet, and the regenerator used for cold determination of the high-temperature exhaust gas is provided with a high-temperature exhaust gas inlet and a cold determination exhaust gas outlet; the oxygen-containing gas input device is communicated with the oxygen-containing gas inlet through one gas reversing flashboard in an open state and is connected with the cold waste gas outlet through the other gas reversing flashboard in a closed state; the flue gas discharge equipment is communicated with the cold waste gas outlet through one flue gas reversing gate plate in an open state and is connected with the oxygen-containing gas inlet through the other flue gas reversing gate plate in a closed state; the smelting furnace comprises raw material feeding equipment, an air inlet, an air outlet, a feeding hole and a raw material feeding pipeline; the raw material feeding pipeline of the smelting furnace comprises an outlet end and an inlet end, wherein the outlet end of the raw material feeding pipeline is communicated with the feeding hole of the smelting furnace, and the inlet end of the raw material feeding pipeline is communicated with raw material feeding equipment of the smelting furnace; the preheating gas outlet is communicated with the gas inlet of one smelting furnace, the raw material feeding equipment of the smelting furnace is in a starting feeding state, the gas outlet of the smelting furnace is communicated with the gas inlet of the other smelting furnace through the gas flow channel, the raw material feeding equipment of the other smelting furnace is in a stopping feeding state, and the gas outlet of the other smelting furnace is communicated with the high-temperature waste gas inlet; and a purge gas inlet is arranged on the raw material feeding pipeline.

3. The utility model provides a two regenerator type powder flight melting glass kilns, it includes two smelters and oxygen-containing gas system of preheating, oxygen-containing gas system of preheating includes two regenerators, two gaseous switching-over flashboards, two flue gas switching-over flashboards, oxygen-containing gas input device and flue gas exhaust apparatus, its characterized in that: when one of the two regenerators is used for preheating the oxygen-containing gas, the other regenerator is used for cold determination of high-temperature exhaust gas, the regenerator used for preheating the oxygen-containing gas is provided with an oxygen-containing gas inlet and a preheated gas outlet, and the regenerator used for cold determination of the high-temperature exhaust gas is provided with a high-temperature exhaust gas inlet and a cold determination exhaust gas outlet; the oxygen-containing gas input device is communicated with the oxygen-containing gas inlet through one gas reversing flashboard in an open state and is connected with the cold waste gas outlet through the other gas reversing flashboard in a closed state; the flue gas discharge equipment is communicated with the cold waste gas outlet through one flue gas reversing gate plate in an open state and is connected with the oxygen-containing gas inlet through the other flue gas reversing gate plate in a closed state; the smelting furnace comprises raw material feeding equipment, an air inlet, an air outlet, a feeding hole and a raw material feeding pipeline; the raw material feeding pipeline of the smelting furnace comprises an outlet end and an inlet end, wherein the outlet end is connected with a feeding hole of the smelting furnace, and the inlet end is communicated with raw material feeding equipment of the smelting furnace; the preheating gas outlet is communicated with the gas inlet of one smelting furnace, the raw material feeding equipment of the smelting furnace is in a starting feeding state, the gas outlet of the smelting furnace is communicated with the gas inlet of the other smelting furnace through the gas flow channel, the raw material feeding equipment of the other smelting furnace is in a stopping feeding state, and the gas outlet of the other smelting furnace is communicated with the high-temperature waste gas inlet; a forced feeding device is arranged on the feeding hole; the forced feeding device is a device which pushes the powdery glass raw material into the feeding hole from the raw material feeding pipeline through mechanical thrust.

4. The double-regenerative-chamber type powder flying melting glass kiln as claimed in claim 3, wherein: the forced feeding equipment comprises a push rod, a rod containing cavity, a piston and a driving mechanism for pushing the piston to reciprocate; the rod accommodating cavity is connected with the inlet end of the raw material feeding pipeline, and the outer diameter of the push rod is matched with the inner diameter of the raw material feeding pipeline; the tail end of the push rod is connected with the piston, the top end of the push rod is pushed by the piston to retreat into the rod accommodating cavity when reaching the retraction end position of the reciprocating motion, and reaches the feed port when reaching the pushing end position of the reciprocating motion; the tail end of the push rod is positioned in the rod containing cavity when the tail end of the push rod is pushed by the piston to reach the pushing end position of the reciprocating motion.

5. The double-regenerative-chamber type powder flying melting glass kiln as claimed in claim 3, wherein: said positive feed means comprising a spring-like helical blade and a shaft which is mechanically driven to rotate; the helical blade is positioned in the raw material feeding pipeline, the shaft is positioned on the central line of the helical blade, and the shaft is fixedly connected with the helical blade.

6. The utility model provides a two regenerator type powder flight melting glass kilns, it includes two smelters and oxygen-containing gas system of preheating, oxygen-containing gas system of preheating includes two regenerators, two gaseous switching-over flashboards, two flue gas switching-over flashboards, oxygen-containing gas input device and flue gas exhaust apparatus, its characterized in that: when one of the two regenerators is used for preheating the oxygen-containing gas, the other regenerator is used for cold determination of high-temperature exhaust gas, the regenerator used for preheating the oxygen-containing gas is provided with an oxygen-containing gas inlet and a preheated gas outlet, and the regenerator used for cold determination of the high-temperature exhaust gas is provided with a high-temperature exhaust gas inlet and a cold determination exhaust gas outlet; the oxygen-containing gas input device is communicated with the oxygen-containing gas inlet through one gas reversing flashboard in an open state and is connected with the cold waste gas outlet through the other gas reversing flashboard in a closed state; the flue gas discharge equipment is communicated with the cold waste gas outlet through one flue gas reversing gate plate in an open state and is connected with the oxygen-containing gas inlet through the other flue gas reversing gate plate in a closed state; the smelting furnace comprises raw material feeding equipment, a raw material feeding pipeline, an air inlet, an air outlet and a feeding hole; the raw material feeding pipeline is a movable feeding pipe, and the outlet end of the movable feeding pipe is movably connected with the feeding hole; the preheating gas outlet is communicated with the gas inlet of one smelting furnace, the material inlet of the smelting furnace is communicated with the raw material feeding equipment through a movable feeding pipe, the gas outlet of the smelting furnace is communicated with the gas inlet of the other smelting furnace through a gas flow passage, and the gas outlet of the other smelting furnace is communicated with the high-temperature waste gas inlet.

7. The double-regenerative-chamber type powder flying melting glass kiln as claimed in claim 6, wherein: the feed inlet of the other smelting furnace is disconnected with the outlet end of the movable feed pipe.

8. The double-regenerative-chamber type powder flying melting glass kiln as claimed in claim 6, wherein: and a gate is arranged on the feeding hole.

9. The double-regenerative-chamber type powder flight melting glass kiln according to claim 1 or 2, characterized in that: a purge gas input pipeline is connected to the purge gas input port; and a valve is arranged on the purge gas input pipeline.

10. The double-regenerative-chamber type pulverized material flying melting glass furnace as claimed in any one of claims 1 to 8, characterized in that: the gas flow channel is an adhesive separator.