CN115893810A - Method for replacing lattice bodies of communicated regenerative chambers of glass kiln in thermal state - Google Patents

Abstract

The invention discloses a thermal state replacement method for a communicated regenerator checker of a glass kiln, and belongs to the technical field of thermal state replacement methods for communicated regenerator checkers. The technical scheme is as follows: the heat storage chamber to be repaired is divided into two independent spaces by closing a branch flue flashboard at the bottom of the heat storage chamber to be repaired and a water-cooling separation device above the lattice body; and then, through the hole opening on the front target wall, the lattice body is dismantled and rebuilt, and finally, the temperature of the repaired regenerator is raised to restore the original temperature, so that the hot repair work of the lattice body is completed. The invention provides a mature technical scheme for the integral replacement of the connected regenerator checker of the glass kiln, realizes the independent separation of the connected regenerator checker by arranging the water-cooling separation device with a multilayer structure above the checker, and provides construction possibility for the replacement of the checker.

Description

Method for replacing lattice bodies of communicated regenerative chambers of glass kiln in thermal state

Technical Field

The invention relates to the technical field of a thermal state replacement method for a connected regenerator checker, in particular to a thermal state replacement method for a connected regenerator checker of a glass kiln.

Background

In recent years, most glass kilns change the structure of independent separation of the conventional air regenerator in the design, and replace the structure of two-by-two separation or front-back all communication type, so that the fixed investment is reduced, and the influence of local blockage of grids of the air regenerator on the process is reduced. However, even if the glass kiln of the regenerator complete partition type is used for 5 years, the upper part of the partition wall of the regenerator is perforated due to burning and erosion, so that the partition wall is damaged and the independent partition function is lost. When the checker is damaged and needs to be replaced in a hot state under the above conditions, the phenomenon of ventilation or fire penetration between the regenerator to be repaired and the adjacent regenerator can occur due to the fact that no separating device is arranged between the regenerators, the ventilation can cause the pressure imbalance of the kiln to avoid normal production, and the fire penetration can cause the high-temperature operation in the regenerator to be repaired. At present, the heat repair work is usually entrusted to an external professional kiln heat repair company to repair by adopting modes such as spray repair, welding repair, local heat repair and the like, the investment is high, the effect is poor, the effect brought by integrally replacing the checker of the regenerator is difficult to achieve, and the potential safety hazard of kiln operation cannot be eliminated.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the method for replacing the checker thermal state of the communicated regenerator of the glass kiln is provided, a set of mature technical scheme is provided for the whole replacement of the checker of the communicated regenerator of the glass kiln, the independent separation of the checker of the communicated regenerator is realized through the water-cooling separation device with the multilayer structure arranged above the checker, and the possibility of construction is provided for the replacement of the checker.

The technical scheme of the invention is as follows:

the method for replacing the checker of the communicated regenerative chamber of the glass kiln in a thermal state comprises the following steps:

s1, closing a branch flue gate at the bottom of a regenerative chamber to be repaired;

s2, symmetrically drilling a plurality of water pipe holes in positions, which are located above the checker, on front and rear target walls of the regenerator to be repaired, and penetrating cooling water pipes into the water pipe holes, wherein the cooling water pipes penetrate through the front and rear target walls;

s3, drilling a manhole above the water pipe hole on the front target wall, covering a partition plate on the cooling water pipe through the manhole, and covering heat insulation cotton on the partition plate to form a water-cooling separation device, so as to separate the grid body in the heat storage chamber from the upper space;

s4, vertically opening a manhole at the position, corresponding to the grid body, on the front target wall, and removing and re-building the grid body through the opened manhole;

s5, after the new lattice body is built, the manhole in the step S4 is built again;

and S6, heating the trimmed regenerative chamber to restore the temperature to the original temperature.

Preferably, in step S4, before the manhole is opened, a plurality of cooling water pipes are inserted into the purging hole at the bottom of the lattice body, and the cooling water pipes penetrate through the front and rear target walls.

Preferably, in step S4, after the manhole is opened and before the lattice body is removed, cooling air is blown into the upper part of the lattice body through the manhole, a hole is formed in the ash removing door of the regenerator, and hot air in the regenerator is extracted through the hole.

Preferably, in step S4, the lattice body is removed from top to bottom, and when the lattice body is removed to a distance of 1.5-2m from the cooling water pipe of the water-cooling partition device, safety protection devices are installed on the left and right partition walls of the regenerator, each safety protection device comprises a screw, and the upper part of the screw is hung on the cooling water pipe of the water-cooling partition device; the screw is sleeved with two sleeves, and the screw is in threaded connection with two nuts, wherein the upper sleeve is positioned below the upper nut, and the lower sleeve is positioned above the lower nut; two connecting rods are hinged to the sleeve and hinged to partition walls on the left side and the right side of the regenerator to be repaired respectively.

Preferably, triangular supporting blocks are respectively installed on the partition walls on the left side and the right side of the heat storage chamber to be repaired, and the connecting rods are hinged on the triangular supporting blocks.

Preferably, in step S4, the lattice body is re-built from bottom to top, and when the lattice body is built to be 1.5-2m away from the cooling water pipe of the water-cooling separation device, the safety protection device is removed, and the construction of the lattice body is continued.

Preferably, in step S6, before the temperature is raised, the insulation wool and a part of the partition plate are taken out, and the thermocouples are respectively installed at the top of the lattice body and the bottom of the rider arch.

Preferably, in step S6, a staged heating mode is adopted, wherein the temperature is within 300 ℃, and the heating rate is 2-4 ℃/h; the temperature is 300-550 ℃, and the heating rate is 3-5 ℃/h;550-1050 ℃, and the heating rate is 5-7 ℃/h;1050-1200 ℃, and the heating rate is 3-5 ℃/h; above 1200 deg.C: the heating rate is 6-8 ℃/h.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention provides a set of mature technical scheme for the whole replacement of the connected regenerator checker of the glass kiln, realizes the independent separation of the connected regenerator checker by arranging the water-cooling separation device with a multi-layer structure above the checker, and provides construction possibility for the replacement of the checker.

2. The anti-smashing water bag is designed at the bottom of the lattice body, the upper layer of the rider arch is prevented from falling bricks and smashing when the lattice body is dismantled and rebuilt, the maintenance cost is saved, the time for maintaining or replacing the rider arch can be shortened, and the overall construction time is shortened.

3. According to the invention, cooling air is introduced above the lattice body, and hot air in the heat storage chamber to be repaired is extracted through the opening on the ash-removing door, so that the cooling rate is greatly improved, and the construction time is shortened.

4. When the lattice body is dismantled, the safety protection device is installed, so that safety guarantee is provided for dismantling and rebuilding the lattice body, and safety accidents are avoided.

5. The invention sets a reasonable heating scheme, realizes gradual heating of the heat storage chamber, avoids the cracking and collapse of the brick and the loss of yield and quality caused by rapid cooling and rapid heating, and reduces the direct and indirect cost.

6. By the method for replacing the lattice bodies of the communicated regenerator of the glass kiln in the thermal state, the thermal storage capacity of the regenerator and the safety of the kiln can be obviously improved, the energy consumption can be obviously reduced, the service life of the kiln can be prolonged, and considerable economic benefits can be brought.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

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

FIG. 2 is a side view of a regenerator to be repaired of the present invention.

Fig. 3 is a schematic structural view of the water-cooled partition device of the present invention.

Figure 4 is a schematic view of the safety shield apparatus of the present invention.

In the figure, 1, a regenerative chamber; 101. a front target wall; 102. a rear target wall; 103. a partition wall; 104. a branch flue damper; 105. a lattice body; 201. a cooling water pipe; 202. a partition plate; 203. heat preservation cotton; 3. a manhole; 4. an exhaust fan; 5. a safety device; 501. a screw; 502. a sleeve; 503. a nut; 504. a connecting rod; 505. a triangular support block; 506-a sling chain; 6. a blower; 7. the rider arch.

Detailed Description

Example 1

In this embodiment, before the lattice body is replaced, the parameters of the thermal repair process of the regenerator are adjusted in the following manner:

1) The cullet content in the raw material is increased to 25-35%. This is because when the checker 105 of a certain regenerator 1 is replaced, the heat storage capacity of the whole kiln is reduced, and the melting capacity of the raw material is reduced, so the raw material formula is adjusted, the content of cullet in the raw material is increased, the glass liquid with the same yield can be stably produced on the premise of reducing one regenerator 1, and the stability of the whole glass production process is ensured.

2) Gradually adjusting the gas consumption of the small furnace corresponding to the replacement part of the checker body to 50-70% of the original consumption, gradually adjusting the consumption of the combustion-supporting air to 0 so as to slow down the combustion of the regenerator 1 to be repaired and prepare for replacing the checker body 105; the gas quantity and the combustion-supporting air of the small furnace corresponding to the regenerative chamber 1 on the other side which is symmetrically arranged with the regenerative chamber 1 to be repaired are gradually adjusted to 60-80% of the original consumption, so as to keep the symmetry of heat supply and smoke exhaust to a certain extent; gradually increasing the gas quantity and the combustion-supporting air quantity of the small furnace adjacent to the regenerator 1 to be repaired to 110-120% of the original consumption so as to make up the problem of insufficient local heat supply caused by the heat repair regenerator; the corresponding feeding amount of the regenerator 1 to be repaired is adjusted to be 90% of the original amount, and the feeding amount of the symmetrically arranged non-repaired regenerator 1 is adjusted to be 110% of the original amount so as to ensure that the pulling amount is kept unchanged. Because the upper spaces of the communicated regenerative chambers are communicated, although each small furnace air distribution system has influence, the small furnace air distribution system can still support the operation of a combustion system, and the yield and the quality of a production line can be kept from being greatly influenced by increasing the using amount of cullet in a certain proportion and adjusting the distribution and the using amount of fuel in the process, so that the direct and indirect cost of hot repair is reduced.

3) The temperature of the hot spot and the temperature of the front area are properly adjusted, the temperature of the glass liquid in a clarification tank of the kiln is kept unchanged, and the stability of a production line is ensured;

4) And maintaining the pressure system in the kiln to be stable.

After the hot repair process parameters of the regenerator 1 are adjusted, as shown in fig. 1-4, the lattice bodies of the communicated regenerators of the glass kiln are subjected to hot state replacement, and the method specifically comprises the following steps:

s1, a branch flue flashboard 104 at the bottom of the heat storage chamber 1 to be repaired is closed, and combustion-supporting air is stopped to be introduced into the heat storage chamber 1 to be repaired, so that the heat storage chamber is cooled.

S2, as shown in FIGS. 1-3, symmetrically drilling a plurality of water pipe holes in positions above the lattice body 105 on the front target wall 101 and the rear target wall 102 of the regenerator 1 to be repaired, and penetrating cooling water pipes 201 into the water pipe holes, wherein the cooling water pipes 201 penetrate through the front target wall 101 and the rear target wall 102, the cooling water pipes can be in a sleeve pipe form, and water enters from an inner pipe and returns to an outer pipe; the cooling water pipes 201 arranged at intervals form a water pipe grate with the interval not more than 150mm, and the water pipe grate covers the grid body 105, so that the grid body is cooled and physical support is provided for the subsequent formation of the water-cooling separation device.

S3, as shown in FIG. 1, drilling a manhole 3 above a water pipe hole on the front target wall 101, covering a partition plate 202 (steel plate can be adopted) on the cooling water pipe 201 through the manhole 3, and adjusting the position of the partition plate 202 to strengthen the covering and sealing effect; aluminum silicate heat insulation cotton 203 is pushed into the manhole 3, the aluminum silicate heat insulation cotton 203 is spread out and then covered on the partition plate 202, the position of the heat insulation cotton 203 is adjusted to strengthen the covering and sealing effect, the cooling water pipe 201, the partition plate 202 and the heat insulation cotton 203 form a water-cooling separation device, the space of the regenerator 1 is thoroughly divided into two parts which are independent up and down from the space, and the grid body 105 is separated from the upper space; the lattice body 105 of the regenerator 1 to be repaired forms an independent space under the plugging of the water-cooling separation device and the branch flue flashboard 104, so that the subsequent dismantling and rebuilding of the lattice body 105 are facilitated. If the holes on the front target wall 101 and the rear target wall 102 affect the overall separation sealing effect, the heat insulation cotton is used for plugging.

S4, as shown in the figure 1-2, a plurality of cooling water pipes 201 are inserted into the blowing holes at the bottom of the grid body 105, the cooling water pipes 201 penetrate through the front target wall 101 and the rear target wall 102, the cooling water pipes 201 serve as anti-smashing water bags, the protective grate arch 7 is prevented from being damaged by falling bricks and smashing on the upper layer when the grid body 105 is dismounted and rebuilt, the maintenance cost is saved, the time for maintaining or replacing the grate arch 7 can be shortened, and the overall construction time is shortened; meanwhile, after cooling water is introduced into the cooling water pipe 201, the cooling effect on the lattice body 105 can be achieved, and the cooling rate of the lattice body 105 before replacement is increased.

As shown in fig. 1-2, a manhole 3 is vertically opened at a position corresponding to the lattice body 105 on the front target wall 101, cooling air is blown into the upper part of the lattice body 105 through the manhole 3 by the blower 6, a hole is formed in the ash removing door of the regenerator 1, hot air in the regenerator 1 is extracted through the hole by an air suction port of the exhaust fan 4, the internal temperature reduction of the lattice body 105 is accelerated, and the replacement time is shortened.

After the temperature of regenerator 1 checker 105 has dropped to a certain level, the builder removes and re-builds checker 105 through vertical manhole 3 in front target wall 101. When the lattice body 105 is removed, the lattice body 105 is removed from top to bottom, and when the lattice body 105 is removed to a distance of 1.5-2m from the cooling water pipe 201 of the water-cooling partition device, the safety protection devices 5 (as shown in fig. 1 and 4) are installed on the left and right partition walls 103 of the regenerator 1, so that the situation that the partition walls 103 collapse to the side to be removed due to unbalanced stress on the two sides of the partition walls 103 between the regenerator 1 to be repaired and the adjacent regenerator 1 caused by the removal of the lattice body 105 is prevented from happening. The safety protection device 5 comprises a screw 501, and the upper part of the screw 501 is hung on the cooling water pipe 201 of the water-cooling separation device through a hanging chain 506; two sleeves 502 are sleeved on the screw 501, and two nuts 503 are connected to the screw 501 in a threaded manner, wherein the upper sleeve 502 is positioned below the upper nut 503, and the lower sleeve 502 is positioned above the lower nut 503; the sleeve 502 is hinged with two connecting rods 504, and the two connecting rods 504 are respectively hinged on the partition walls 103 at the left and right sides of the heat storage chamber 1 to be repaired. By screwing the nut 503, the sleeve 502 is pushed to move on the screw 501, so that the connecting rod 504 is pushed outwards against the partition walls 103 on the left and right sides of the regenerator 1, acting force is generated on the partition walls 103, and thus the stress on the two sides of the partition walls 103 is kept balanced, and the partition walls 103 are prevented from collapsing to the dismounting side. In order to further uniformly apply the force to the partition walls 103, triangular support blocks 505 may be respectively installed on the partition walls 103 at the left and right sides of the regenerator 1 to be repaired, such that the connection rods 504 are hinged to the triangular support blocks 505, and the force is more uniformly distributed by applying the force to the partition walls 103 through the triangular support blocks 505.

After safety device 5 installed, constructor got into regenerator 1 inside quick clearance lattice body 105, sorts undamaged brick with reutilization, and the brick of damage is then directly abandoned, finishes until finishing the brick clearance with all lattice bodies 105, exposes the preventing of lattice body 105 bottom and pounces the water drum. And (3) removing the anti-smashing water bag and the bottom exhaust fan 4, opening the ash pushing door to clean the waste bricks falling from the rider arch 7, checking the integrity of the rider arch 7, and locally repairing or integrally replacing the damaged part to meet the use requirement.

And (3) building the lattice bodies 105 again, stacking the lattice bodies 105 layer by layer from bottom to top until the distance between the lattice bodies 105 and the cooling water pipe 201.5-2 m of the water-cooling separation device, dismantling the safety protection device 5, and continuously stacking the lattice bodies 105 to the highest position.

S5, after the new lattice body 105 is built, the vertical manhole 3 on the front target wall 101 and the hole on the ash-removing door are built again.

S6, gradually pulling out the heat preservation cotton 203 and part of the partition boards 202 in the water-cooling separation device to enable holes which are partially penetrated to appear on the water-cooling separation device, and preparing for heating the grid body 105; thermocouples are respectively arranged at the top of the lattice body 105 and the bottom of the rider arch 7 for subsequent temperature monitoring (the thermocouple at the top of the lattice body is used as a standard during temperature rising). Carrying out staged heating on the trimmed regenerative chamber 1 within 300 ℃, wherein the heating rate is 2-4 ℃/h; the temperature is 300-550 ℃, and the heating rate is 3-5 ℃/h;550-1050 ℃, and the heating rate is 5-7 ℃/h;1050-1200 ℃, and the heating rate is 3-5 ℃/h; above 1200 deg.C: the heating rate is 6-8 ℃/h. In the temperature rising process, according to the temperature, the kiln combustion air-fire parameters, the opening degree of the branch flue flashboard 104, the residual partition plate 202 and the cooling water pipe 201 of the water-cooling separation device are gradually recovered, and the kiln temperature system is gradually recovered. Finally, all holes and various process indexes are recovered, and the hot repair process of the lattice body 105 is completed.

Although the present invention has been described in detail in connection with the preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. The method for replacing the checker of the communicated regenerative chamber of the glass kiln in the thermal state is characterized by comprising the following steps of:

s1, closing a branch flue gate (104) at the bottom of a regenerative chamber (1) to be repaired;

s2, symmetrically drilling a plurality of water pipe holes in positions, which are positioned above the lattice body (105), on a front target wall (101) and a rear target wall (102) of the regenerator (1) to be repaired, and penetrating cooling water pipes (201) into the water pipe holes, wherein the cooling water pipes (201) penetrate through the front target wall (101) and the rear target wall (102);

s3, drilling a manhole (3) above a water pipe hole on the front target wall (101), covering a partition plate (202) on the cooling water pipe (201) through the manhole (3), covering heat insulation cotton (203) on the partition plate (202), forming a water-cooling partition device, and separating a lattice body (105) in the heat storage chamber (1) from the upper space;

s4, vertically opening a manhole (3) at the position, corresponding to the lattice body (105), on the front target wall (101), and removing and re-building the lattice body (105) through the opened manhole (3);

s5, after the new lattice body (105) is built, the manhole (3) in the step S4 is built again;

s6, heating the trimmed regenerative chamber (1) to restore the temperature to the original temperature.

2. The method for replacing the checker work of the glass kiln communication type regenerator according to claim 1, wherein in step S4, before the manhole (3) is opened, a plurality of cooling water pipes (201) are inserted into the purge hole at the bottom of the checker work (105), and the cooling water pipes (201) penetrate through the front target wall (101) and the rear target wall (102).

3. The method for thermally replacing a checker of a communicating regenerator of a glass kiln as set forth in claim 1, wherein in step S4, before removing the checker (105) after opening the manhole (3), cooling air is blown into the upper part of the checker (105) through the manhole (3), and a hole is opened in a dust removing door of the regenerator (1), through which hot air in the regenerator (1) is extracted.

4. The method for replacing the lattice body of the communicating regenerator of the glass kiln as claimed in claim 1, wherein in step S4, the lattice body (105) is removed from the top down, when the lattice body (105) is removed to be 1.5-2m away from the cooling water pipe (201) of the water-cooling partition device, the safety protection devices (5) are installed on the left and the right partition walls (103) of the regenerator (1), the safety protection devices (5) comprise screw rods (501), and the upper parts of the screw rods (501) are hung on the cooling water pipe (201) of the water-cooling partition device; two sleeves (502) are sleeved on the screw (501), and two nuts (503) are connected to the screw (501) in a threaded manner, wherein the upper sleeve (502) is positioned below the upper nut (503), and the lower sleeve (502) is positioned above the lower nut (503); two connecting rods (504) are hinged to the sleeve (502), and the two connecting rods (504) are hinged to partition walls (103) on the left side and the right side of the heat storage chamber (1) to be repaired respectively.

5. The method for replacing the checker work of the communicating regenerator of the glass kiln in the thermal state as claimed in claim 4, wherein triangular support blocks (505) are respectively installed on the partition walls (103) at the left and right sides of the regenerator (1) to be repaired, and the connecting rods (504) are hinged on the triangular support blocks (505).

6. The method for replacing the checker bodies of the communication type regenerator of the glass kiln according to claim 4, wherein in the step S4, the checker bodies (105) are constructed again from bottom to top, and when the checker bodies (105) are constructed to be 1.5 to 2m away from the cooling water pipes (201) of the water-cooled partition means, the safety protection means (5) is removed, and the construction of the checker bodies (105) is continued.

7. The method for replacing the checker body of the communicating regenerator of the glass kiln as claimed in claim 1, wherein in step S6, before the temperature is raised, the thermal insulation wool (203) and a part of the partition (202) are taken out, and the thermocouples are respectively installed at the top of the checker body (105) and the bottom of the rider arch (7).

8. The method for replacing the checker in a thermal state in a communicating regenerator of a glass kiln as claimed in claim 7, wherein in step S6, a stepwise temperature rise is performed at a rate of 2-4 ℃/h within 300 ℃; the temperature is 300-550 ℃, and the heating rate is 3-5 ℃/h;550-1050 ℃, and the heating rate is 5-7 ℃/h;1050-1200 ℃, and the heating rate is 3-5 ℃/h; above 1200 ℃: the heating rate is 6-8 ℃/h.

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