CN212390905U

CN212390905U - Waste heat boiler off-line cleaning system

Info

Publication number: CN212390905U
Application number: CN201922308366.6U
Authority: CN
Inventors: 毛新尧; 顾杰; 顾全斌
Original assignee: Wuxi Huaguang Environment and Energy Group Co Ltd
Current assignee: Wuxi Huaguang Environment and Energy Group Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-01-22
Anticipated expiration: 2029-12-20

Abstract

The utility model relates to a waste heat boiler technical field specifically is a waste heat boiler off-line cleaning system, and it can realize the washing of greasy dirt, deposition, and it is including receiving the hot side, its characterized in that, it is provided with spray set, below and is provided with the water-collecting plate to receive the hot side top, spray set include the shower with set up in nozzle on the shower, the shower passes through liquid inlet pipe and connects purge valve one end, a trap one end, the purge valve other end passes through the scavenging pump and connects the washing water tank, a trap other end is provided with first effluent water sump, the drain pipe is connected to the lower of water-collecting plate.

Description

Waste heat boiler off-line cleaning system

Technical Field

The utility model relates to a waste heat boiler technical field specifically is a waste heat boiler off-line cleaning system.

Background

Oil resources in the middle east are rich, and a large amount of oily pollutants are generated by combustion of local gas turbines which use heavy oil, light diesel oil and the like as fuels. Although the waste heat boiler matched with the combustion engine and arranged at the outlet of the area is provided with the steam soot blower, a large amount of oily dirt/deposited ash can be accumulated on the outer surface of the boiler fin tube after long-term operation, and the output of the boiler is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the oil stain and the accumulated dust can not be cleaned on the heating surface pipe of the existing boiler, the utility model provides a waste heat boiler off-line cleaning system, which can realize the cleaning of the oil stain and the accumulated dust.

The technical scheme is as follows: the utility model provides a waste heat boiler off-line cleaning system, its includes receives the hot side, its characterized in that, it is provided with spray set, below and is provided with the water-collecting plate to receive the hot side top, spray set include the shower and set up in nozzle on the shower, the shower passes through the admission line and connects purge valve one end, first trap one end, the purge valve other end passes through the scavenging pump and connects the washing water tank, the first trap other end is provided with first effluent water sump, the drain pipe is connected to the lower of water-collecting plate.

The spraying device is further characterized in that the spraying pipes are arranged in parallel with four to sixteen spraying pipes, and each spraying pipe is uniformly provided with at least two nozzles;

each spraying pipe is connected with the liquid inlet pipeline through a branch valve and a liquid inlet branch, and the liquid inlet pipeline is also provided with an exhaust valve;

the spraying device further comprises a left side protection plate and a right side protection plate, an end pipe is mounted on the right side surface of the left side protection plate, the left end of the spraying pipe is connected with the end pipe through a joint, and the right end of the spraying pipe penetrates through the right side protection plate and is connected with the branch valve;

the nozzle is a conical spiral nozzle;

the drain pipe is connected with one end of a second drain valve, the other end of the second drain valve is provided with a second sewage pool, and a drain opening is further formed in the drain pipe.

Adopt the utility model discloses afterwards, utilize the scavenging pump to beat into the shower with the washing liquid that washs in the water tank to spray on the heated surface through the nozzle, reach the purpose of wasing greasy dirt, deposition.

Drawings

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

FIG. 2 is a schematic view of a spraying device;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic cross-sectional view at I in fig. 2.

Detailed Description

Referring to fig. 1 to 4, the waste heat boiler off-line cleaning system comprises a heating surface, the heating surface has three layers, namely a first layer heating surface 1, a middle heating surface 2 and a bottommost heating surface 3, a spraying device 4 is arranged above the first layer heating surface 1, a water collecting plate 5 is arranged below the bottommost heating surface 3, the spraying device 4 comprises a left side protective plate 6, a right side protective plate 7, spraying pipes 8 and nozzles 9 arranged on the spraying pipes 8, an end pipe 10 is arranged on the right side surface of the left side protective plate 6, the left ends of the spraying pipes 8 are connected with the end pipe 10 through a joint 11, the right ends of the spraying pipes 8 penetrate through the right side protective plate 7 and are connected with one end of a branch valve 12, the spraying pipes 8 are arranged in parallel and are divided into six regions, each region corresponds to two spraying pipes 8, six nozzles 9 are uniformly arranged on each spraying pipe 8, the other end of the branch valve 12 is connected with one end of a, The other end of the first drain valve 15 is connected with the cleaning water tank 17 through the cleaning pump 16, the other end of the first drain valve 15 is provided with a first sewage tank 18, the lowest part of the water collecting plate 5 is connected with a liquid outlet pipe 19, the liquid outlet pipe 19 is connected with one end of a second drain valve 20, the other end of the second drain valve 20 is provided with a second sewage tank 21, and a drain port 22 is further arranged on the liquid outlet pipe 19.

The nozzle 9 is a conical spiral nozzle, and can meet the cleaning requirement. The upper end of the liquid inlet pipeline is also provided with an exhaust valve 23.

Each branch valve controls two showers. The cleaning pump pumps water from the cleaning water tank, and the cleaning water is dispersed to six branches through the cleaning main valve and reaches each spray pipe, so that the heating surface is cleaned. The sewage generated by cleaning is discharged into a sewage tank through a liquid outlet pipe 19 arranged below the heated surface.

The following describes the cleaning scheme specifically:

step 1: the gas turbine stops running and the exhaust-heat boiler is cooled to a certain degree.

Step 2: the cleaning water tank 17 is filled with sufficient alkaline solution, the temperature of the solution is required to be 40-60 ℃, and the pH value is 11-13.

And step 3: second trap 20 is opened, and vent valve 23 and purge valve 14 are opened.

And 4, step 4: when the cleaning pump 16 is opened and water flows out from the exhaust port at the exhaust valve 23, the bypass valves 12 at the first and second areas are opened, and the exhaust valve 23 is closed to clean the

areas

1 and 2.

And 5: the branch valves 12 at the first area and the second area are closed, the branch valves 12 at the third area and the fourth area are opened, and the third area and the fourth area are cleaned.

Step 6: and closing the branch valves 12 at the third area and the fourth area, opening the branch valves 12 at the fifth area and the sixth area, and cleaning the fifth area and the sixth area.

And 7: the bypass valves 12 at the wash pump, zone five and zone six are closed.

And 8: after the cleaning water in the boiler is completely discharged, the second drain valve 20 is closed; and opening the first drain valve 15 to discharge the residual solution in the spray pipe 8, and closing the first drain valve 15 after the discharge is finished. The water in the cleaning water tank 17 is drained through a drain pipe of the cleaning water tank 17 itself.

And step 9: and starting the gas turbine, blowing air and drying the heated surface and the protective plate inside the boiler.

The scheme is a better scheme, and a zone-by-zone gradual cleaning method is adopted. Its advantages are low flow rate and lift, and low cost.

The cleaning water tank can be designed to be fixed, can also be designed to be vehicle-mounted movable, and different decisions need to be made according to the conditions of projects. Considering that the off-line cleaning system is low in use frequency, the off-line cleaning system is suggested to be designed to be in a vehicle-mounted mobile mode, and the off-line cleaning system has the advantages that the off-line cleaning system not only can serve the project, but also can serve other surrounding projects, so that more economic benefits are generated, and equipment can be prevented from being idle for a long time.

Claims

1. The utility model provides a waste heat boiler off-line cleaning system, its includes receives the hot side, its characterized in that, it is provided with spray set, below and is provided with the water-collecting plate to receive the hot side top, spray set include the shower and set up in nozzle on the shower, the shower passes through the admission line and connects purge valve one end, first trap one end, the purge valve other end passes through the scavenging pump and connects the washing water tank, the first trap other end is provided with first effluent water sump, the drain pipe is connected to the lower of water-collecting plate.

2. The waste heat boiler off-line cleaning system as claimed in claim 1, wherein four to sixteen spray pipes are arranged side by side, and at least two spray nozzles are uniformly arranged on each spray pipe.

3. The waste heat boiler off-line cleaning system as claimed in claim 1, wherein each spray pipe is connected with the liquid inlet pipeline through a branch valve and a liquid inlet branch, and an exhaust valve is further arranged on the liquid inlet pipeline.

4. The waste heat boiler off-line cleaning system of claim 3, wherein the spraying device further comprises a left side guard plate and a right side guard plate, an end pipe is installed on the right side surface of the left side guard plate, the left end of the spraying pipe is connected with the end pipe through a joint, and the right end of the spraying pipe penetrates through the right side guard plate and is connected with the bypass valve.

5. The offline waste heat boiler cleaning system according to claim 1, wherein the nozzle is a conical spiral nozzle.

6. The waste heat boiler off-line cleaning system as claimed in claim 1, wherein the drain pipe is connected to one end of a second drain valve, a second sewage tank is arranged at the other end of the second drain valve, and a drain opening is further arranged on the drain pipe.