Disassembly-free spraying device for gas primary cooler

Abstract

The utility model discloses a non-dismantling type coal gas primary cooler spraying device which comprises a transverse pipe coal gas cooler, a main spraying pipe, an inner spraying pipe, a first blocking end and a second blocking end, the main spraying pipe is installed inside the transverse pipe coal gas cooler, and first spraying holes are formed in the bottom of the main spraying pipe at equal intervals. The first blocking end is fixed to one end of the main spraying pipe, the second blocking end is fixed to the other end of the main spraying pipe, an elbow is fixed to one side of the second blocking end, an inner threaded hole is formed in the outer wall of the elbow, the inner spraying pipe is arranged in the main spraying pipe, and second spraying holes are formed in the bottom of the inner spraying pipe at equal intervals. The coking gas primary cooler spraying device solves the problem that a coking gas primary cooler spraying device is blocked, continuous operation of the spraying device is guaranteed, a spraying pipeline is thoroughly clear, the gas primary cooler is not stopped, the spraying pipe is not disassembled, the labor intensity of operators is reduced, and production continuity is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of resources and environment, in particular to a disassembly-free coal gas primary cooler spraying device. Background Art

[0002] The gas primary cooler is an important production equipment in the coking plant. At present, the coking plant generally adopts the horizontal tube type gas primary cooler (gas goes through the shell side and cooling water goes through the tube side). The main function of the gas primary cooler is to perform preliminary cooling on the raw gas before it enters the gas blower to reach the specified temperature, so as to create conditions for the transportation of the rear gas and the recovery of chemical products. The operation status of the gas primary cooler mainly includes resistance, cooling effect, etc. Because there are many impurities in the raw gas, it is easy to block the gap of the cooling water pipe of the gas primary cooler, resulting in excessive resistance of the gas primary cooler, making it impossible to transport the gas, and even directly causing the coking plant to stop production. In order to ensure normal operation, the gas primary cooler is equipped with a spraying device, including upper and lower spraying. The spraying device runs continuously to flush the gap between the cooling water pipe wall of the gas primary cooler to keep the gas channel unobstructed.

[0003] However, in actual application, since the spraying liquid is a mixture of tar and ammonia water, which contains a lot of particulate matter, the distribution holes of the spraying pipe are often blocked, affecting the effect of the spraying liquid, thereby increasing the resistance of the gas pre-cooler. The operators will continue to clean the spraying pipe with steam and hot ammonia water, but the effect is not good, and the spraying pipe may even be blocked as a whole. If cleaning cannot solve the problem, the gas pre-cooler will need to be shut down as a whole, the gas valve will be closed and cleaned, the spraying pipe will be pulled out and placed on the ground for clearing, and then the pre-cooler will be turned on after installation. The entire dismantling, restoration of the spraying pipe, and the start and stop of the pre-cooler require at least 8 hours of maintenance time, which has a great impact on the production continuity of the coking plant and also increases the labor intensity of the operators. Therefore, we have launched a disassembly-free gas pre-cooler spraying device. Utility Model Content

[0004] The utility model aims to provide a disassembly-free coal gas primary cooler spraying device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a non-disassembly type gas primary cooler spraying device, comprising a horizontal tube gas cooler, a main spraying pipe, an inner spraying pipe, a first blocking end and a second blocking end, wherein the main spraying pipe is installed inside the horizontal tube gas cooler, and the bottom of the main spraying pipe is provided with first spraying holes at equal intervals, the first blocking end is fixed to one end of the main spraying pipe, and a water line is provided on the surface of the first blocking end, and first fixing holes at equal intervals are provided inside the first blocking end outside the water line, and the second blocking end is fixed to the main spraying pipe. The other end of the pipe, and the edge position of the second blocking end is provided with equally spaced second fixing holes, and the second blocking end between the second fixing holes is provided with a flange hole, an elbow is fixed to one side of the second blocking end, and an internal threaded hole is provided on the outer wall of the elbow, the inner spray pipe is inside the main spray pipe, and the bottom of the inner spray pipe is provided with equally spaced second spray holes, and one end of the inner spray pipe passes through the first blocking end and is welded to the first blocking end, and the other end of the inner spray pipe passes through the second blocking end and the internal threaded hole in sequence and is provided with an external thread.

[0006] Preferably, the main spray pipe is made of a DN40mm stainless steel pipe, and the inner spray pipe is made of a DN15mm stainless steel pipe.

[0007] Preferably, one end of the inner spray pipe extends to the outside of the internal threaded hole and is provided with an inner and outer double-threaded end cap, which is respectively threadedly connected to the internal threaded hole and the external thread to play a role in closing the pipeline.

[0008] Preferably, a positioning ring is fixed on the outer wall of the main spray pipe on one side of the first blocking end, and four groups of stainless steel bars are passed through the interior of the positioning ring, one end of the stainless steel bar passes through the first fixing hole and is fixed by bolts, and the other end of the stainless steel bar passes through the second fixing hole and is fixed by bolts.

[0009] Preferably, the first blocking end is made of a circular stainless steel plate with a diameter of DN46mm and a thickness of 6mm.

[0010] Preferably, the second blocking end is made by drilling a DN50mm flange.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the non-disassembly type gas primary cooler spraying device solves the problem of blockage of the coking gas primary cooler spraying device, ensures the continuous operation of the spraying device, realizes the thorough cleaning of the spraying pipeline without stopping the gas primary cooler and removing the spraying pipe, reduces the labor intensity of the operator, and maintains the continuity of production;

[0012] The nested design is adopted, and a main spray pipe and an inner spray pipe are provided. A plurality of first spray holes are provided in the middle and lower part of the main spray pipe, a first plugging end and a second plugging end are provided at both ends of the main spray pipe, and a plurality of second spray holes are provided in the wall of the inner spray pipe; secondly, four stainless steel bars are passed through a positioning ring to connect the first plugging end and the second plugging end on the outside of the main spray pipe, and the first plugging end and the second plugging end are fixed with bolts, the outer side of the second plugging end is an elbow, an internal threaded hole is provided on the elbow, the inner spray pipe is passed through the inner and outer double threaded end cap and an external thread is provided, and the inner and outer double threaded end cap is made, which mainly plays the role of closing the pipeline; the patent can keep the inner spray pipe spraying clean ammonia water all the time, thereby achieving The effect of spraying and cleaning the tar residue dirt in the main spray pipe can effectively extend the blockage time of the main spray pipe. Because the internal spray pipe is designed to always maintain clean ammonia spraying, the main spray pipe is not easy to be blocked, which can effectively ensure the stable operation of the pre-cooler. In the case of blockage of the main spray pipe, there is no need to remove the spray pipe to the ground for clearing, avoiding the start and stop of the gas pre-cooler to affect the continuity of production, and at the same time can greatly reduce the workload of operators. The device can be promoted in the coking industry to solve the blockage problem of the spray device of the coking gas pre-cooler, ensure the continuous operation of the spray device, and achieve thorough cleaning of the spray pipeline without stopping the gas pre-cooler and removing the spray pipe, thereby reducing the labor intensity of operators and maintaining production continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view structural diagram of the horizontal tube gas cooler of the utility model;

[0014] Figure 2 This is a schematic diagram of the side structure of the horizontal tube gas cooler of the utility model;

[0015] Figure 3 This is an enlarged structural diagram of the main spray pipe of the utility model;

[0016] Figure 4 For the utility model Figure 3 The enlarged structural diagram at A in the middle;

[0017] Figure 5 This is a schematic diagram of the enlarged front view structure of the first plugging of the utility model;

[0018] Figure 6 It is a schematic diagram of the enlarged front view of the second plugging structure of the utility model.

[0019] In the figure: 1. horizontal tube gas cooler; 2. main spray pipe; 3. first spray hole; 4. inner spray pipe; 5. second spray hole; 6. positioning ring; 7. stainless steel bar; 8. first plugging end; 9. second plugging end; 10. elbow; 11. internal threaded hole; 12. internal and external double threaded end cap; 13. external thread; 14. waterline; 15. first fixing hole; 16. second fixing hole; 17. flange hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0021] See also Figure 1-6 The utility model provides an embodiment: a disassembly-free coal gas primary cooler spraying device, comprising a horizontal pipe coal gas cooler 1, a main spraying pipe 2, an inner spraying pipe 4, a first blocking end 8 and a second blocking end 9, the main spraying pipe 2 is installed inside the horizontal pipe coal gas cooler 1, and the bottom of the main spraying pipe 2 is provided with first spraying holes 3 at equal intervals;

[0022] The first plugging end 8 is fixed to one end of the main spray pipe 2, and a waterline 14 is provided on the surface of the first plugging end 8, and first fixing holes 15 are provided at equal intervals inside the first plugging end 8 outside the waterline 14, the second plugging end 9 is fixed to the other end of the main spray pipe 2, and second fixing holes 16 are provided at equal intervals at the edge positions inside the second plugging end 9, and flange holes 17 are provided inside the second plugging end 9 between the second fixing holes 16, an elbow 10 is fixed to one side of the second plugging end 9, and an internal threaded hole 11 is provided on the outer wall of the elbow 10;

[0023] The inner spray pipe 4 is inside the main spray pipe 2, and the bottom of the inner spray pipe 4 is provided with second spray holes 5 at equal intervals, and one end of the inner spray pipe 4 passes through the first blocking end 8 and is welded to the first blocking end 8, and the other end of the inner spray pipe 4 passes through the second blocking end 9 and the internal threaded hole 11 in sequence and is provided with an external thread 13;

[0024] The main spray pipe 2 is made of a DN40mm stainless steel pipe, and the inner spray pipe 4 is made of a DN15mm stainless steel pipe;

[0025] One end of the inner spray pipe 4 extends to the outside of the inner thread hole 11 and is covered with an inner and outer double thread end cap 12, which is threadedly connected to the inner thread hole 11 and the outer thread 13 respectively to close the pipeline.

[0026] A positioning ring 6 is fixed on the outer wall of the main spray pipe 2 on one side of the first blocking end 8, and four groups of stainless steel bars 7 are inserted into the interior of the positioning ring 6. One end of the stainless steel bar 7 passes through the first fixing hole 15 and is fixed by bolts, and the other end of the stainless steel bar 7 passes through the second fixing hole 16 and is fixed by bolts.

[0027] The first plugging end 8 is made of a round stainless steel plate with a DN46mm and a thickness of 6mm;

[0028] The second plugging end 9 is made by drilling a DN50mm flange.

[0029] When the embodiment of the present application is used: first, the present patent adopts a nested design, by providing a main spray pipe 2 and an inner spray pipe 4, the main spray pipe 2 is made of a DN40mm stainless steel pipe, the inner spray pipe 4 is made of a DN15mm stainless steel pipe (it can be appropriately adjusted according to the size of the primary cooler), a plurality of DN8mm first spray holes 3 are opened in the middle and lower part of the main spray pipe 2, the center distance of the first spray holes 3 is 30mm, a first plugging end 8 is set at one end of the main spray pipe 2, the first plugging end 8 is made of a DN46mm, 6mm thick round stainless steel plate, a closed waterline 14 is made at the center distance DN40mm and four groups of first fixing holes 15 are opened on the outside, the main A second plugging end 9 is provided at one end of the spray pipe 2. The second plugging end 9 is made by drilling holes in a DN50mm flange sheet. Four groups of flange holes 17 are provided on the surface of the second plugging end 9. Second fixing holes 16 are provided between the flange holes 17. The inner spray pipe 4 is made of a DN15mm stainless steel pipe. A plurality of DN4mm second spray holes 5 are opened on the pipe wall. The hole center distance is 30mm. Secondly, four 4mm stainless steel bars 7 (with threads at both ends) are used outside the main spray pipe 2 to pass through a positioning ring 6 to connect the first plugging end 8 and the second plugging end 9, and the first plugging end 8 and the second plugging end 9 are fixed with bolts. The positioning ring 6 is provided outside the first spray hole 3 at a distance from the first plugging end 8. 100mm; further, the outer side of the second blocking end 9 is an elbow 10, and a DN18mm internal threaded hole 11 is opened on the elbow 10, and the inner spray pipe 4 passes through the inner and outer double threaded end caps 12 and is provided with an external thread 13, and the inner and outer double threaded end caps 12 (hollow inner and outer double threads) are made, which mainly play the role of closing the pipeline, and the inner spray pipe 4 is welded and closed at the first blocking end 8, and passes through the second blocking end 9 to connect the external valve pipeline; during use, the main spray pipe 2 is used for spraying the primary cooler spray liquid. Because naphthalene in the coal gas needs to be removed, the spray liquid must be mixed with some light tar. There are more particulate matter in the tar, and the aperture of the first spray hole 3 is small, so the main spray pipe 2 It is very easy to get blocked. In actual production, it is often necessary to use hot ammonia water and steam to clear the external spray pipe. This patent can keep the inner spray pipe 4 spraying clean ammonia water all the time, so as to achieve the effect of spraying and cleaning the tar residue dirt in the main spray pipe 2, which can effectively extend the dirt blockage time of the main spray pipe 2. Because the inner spray pipe 4 is designed to always keep clean ammonia water spraying, the main spray pipe 2 is not easy to get blocked, which can effectively ensure the stable operation of the primary cooler. In the case of blockage of the main spray pipe 2, there is no need to remove the spray pipe to the ground for clearing, so as to avoid the impact of the start and stop of the gas primary cooler on the continuity of production. At the same time, it can greatly reduce the workload of the operators, and the device can be promoted in the coking industry. In summary, the device solves the problem of blockage of the spray device of the coking gas primary cooler, ensures the continuous operation of the spray device, and realizes the thorough clearing of the spray pipeline without stopping the gas primary cooler and removing the spray pipe, which reduces the labor intensity of the operators and maintains the continuity of production.

[0030] The implementation of this patent needs to be combined with the actual situation on site and needs to be installed during the shutdown and maintenance of the primary cooler. The following takes the maintenance of the coking plant gas primary cooler as an example to introduce the actual application of this patent.

[0031] Close the gas valves at the inlet and outlet of the gas pre-cooler, stop the pre-cooler according to regulations, clean the gas blind plate, close the main valves of the upper and lower spray liquid of this pre-cooler, and after confirming that the valves are tightly closed, remove the flange bolts of the spray holes, pull out the upper and lower spray pipes, place them on the ground, insert the newly manufactured spray pipes into the upper and lower spray holes, tighten the flange bolts, connect the newly manufactured elbow 10, pass the inner spray pipe 4 through the inner threaded hole 11, install the inner and outer double threaded end caps 12, and make sure to leave enough outer threads 13 to connect the inner spray pipe 4 to control the valve. After the installation is completed, the inner spray pipe 4 is connected to clean ammonia water for spraying and flushing, and the main spray pipe 2 resumes normal spraying function. The gas pre-cooler is turned on according to the regulations. If the main spray pipe 2 is seriously blocked and normal ammonia water and steam cleaning are ineffective, there is no need to stop the gas pre-cooler. The spray pump can be stopped, and the four fixing nuts at the second plugging end 9 and the inner and outer double-threaded end cap 12 can be loosened. At this time, the main spray pipe 2 can be pushed toward the first plugging end 8 at the inner threaded hole 11. At this time, a large gap is generated between the first plugging end 8 and the main spray pipe 2. The inner and outer double-threaded end cap 12 is installed to prevent ammonia water from splashing in the pipeline. The main spray pump is started, and the tar residue in the main spray pipe 2 can be discharged at the gap of the first plugging end 8 according to the spraying direction. After the tar residue is discharged, the four fixing nuts at the second plugging end 9 are tightened, and the inner threaded hole 11 is reset to resume normal spraying state.

Claims

1. A non-disassembly type gas primary cooler spraying device, characterized in that: The invention comprises a horizontal pipe gas cooler (1), a main spray pipe (2), an inner spray pipe (4), a first blocking end (8) and a second blocking end (9), wherein the main spray pipe (2) is installed inside the horizontal pipe gas cooler (1), and the bottom of the main spray pipe (2) is provided with first spray holes (3) at equal intervals, the first blocking end (8) is fixed to one end of the main spray pipe (2), and a water line (14) is provided on the surface of the first blocking end (8), and first fixing holes (15) at equal intervals are provided inside the first blocking end (8) outside the water line (14), the second blocking end (9) is fixed to the other end of the main spray pipe (2), and the edge position inside the second blocking end (9) The second sealing end (9) between the second fixing holes (16) is provided with a flange hole (17), an elbow (10) is fixed on one side of the second sealing end (9), and an internal threaded hole (11) is provided on the outer wall of the elbow (10), the inner spray pipe (4) is inside the main spray pipe (2), and the bottom of the inner spray pipe (4) is provided with second spray holes (5) at equal intervals, and one end of the inner spray pipe (4) passes through the first sealing end (8) and is welded to the first sealing end (8), and the other end of the inner spray pipe (4) passes through the second sealing end (9) and the internal threaded hole (11) in sequence and is provided with an external thread (13).

2. The non-disassembly type gas primary cooler spraying device according to claim 1, characterized in that: The main spray pipe (2) is made of a DN40mm stainless steel pipe, and the inner spray pipe (4) is made of a DN15mm stainless steel pipe.

3. The non-disassembly type gas primary cooler spraying device according to claim 1, characterized in that: One end of the inner spray pipe (4) extends to the outside of the internal threaded hole (11) and is provided with an inner and outer double threaded end cap (12), and the inner and outer double threaded end cap (12) is threadedly connected to the internal threaded hole (11) and the external thread (13) respectively.

4. The non-disassembly type gas primary cooler spraying device according to claim 1, characterized in that: A positioning ring (6) is fixed on the outer wall of the main spray pipe (2) on one side of the first blocking end (8), and four groups of stainless steel bars (7) are inserted into the interior of the positioning ring (6), one end of the stainless steel bar (7) passes through the first fixing hole (15) and is fixed by a bolt, and the other end of the stainless steel bar (7) passes through the second fixing hole (16) and is fixed by a bolt.

5. The non-disassembly type gas primary cooler spraying device according to claim 1, characterized in that: The first blocking end (8) is made of a circular stainless steel plate with a diameter of DN46 mm and a thickness of 6 mm.

6. The non-disassembly type gas primary cooler spraying device according to claim 1, characterized in that: The second blocking end (9) is made by drilling a DN50mm flange.

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