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CN-121988147-A - Feedforward compensation device for adjusting injection quantity of deacidification agent in flue gas treatment of garbage incineration plant

CN121988147ACN 121988147 ACN121988147 ACN 121988147ACN-121988147-A

Abstract

The invention discloses a feedforward compensation device for adjusting the injection quantity of deacidification agent in flue gas treatment of a garbage incineration plant, which belongs to the technical field of flue gas treatment and comprises a spray tank, wherein the bottom end of the spray tank is connected with a guide pipe, the side wall of the guide pipe is connected with an air inlet pipe, the outer wall of the air inlet pipe is sleeved with a third control valve, the outer wall of the spray tank is sleeved with a medicament pipe with an annular structure, the top surface of the medicament pipe is connected with a plurality of groups of main spray components, the bottom surface of the medicament pipe is connected with a plurality of groups of auxiliary spray components, and one ends of the main spray components and the auxiliary spray components are all connected inside the spray tank in a penetrating manner. The main spray assembly adopts a first branch pipe, a second branch pipe, a first liquid guide pipe and a first spray head to realize deacidification agent spraying, a built-in pressing part and a first water pressure sensor are arranged, the pressing part is driven to be outwards stretched by utilizing the water pressure in the pipeline, and the blocking object is automatically inserted into the first spray head to dredge, so that the foreign matter of the first spray head is self-removed, and the reliability of the flue gas treatment by spraying the deacidification agent is improved.

Inventors

  • ZHU CHUANG
  • ZHANG JINLAN

Assignees

  • 艾默斯(江苏)环境科学发展有限公司

Dates

Publication Date
20260508
Application Date
20260403

Claims (10)

  1. 1. The feedforward compensation device for adjusting the injection quantity of the deacidification agent in the flue gas treatment of the garbage incineration plant is characterized by comprising a spray tank, wherein the bottom end of the spray tank is connected with a guide pipe, the side wall of the guide pipe is connected with an air inlet pipe, the outer wall of the air inlet pipe is sleeved with a third control valve, the outer wall of the spray tank is sleeved with a reagent pipe with an annular structure, the top surface of the reagent pipe is connected with a plurality of groups of main spray components, the bottom surface of the reagent pipe is connected with a plurality of groups of auxiliary spray components, and one ends of the main spray components and the auxiliary spray components are all connected inside the spray tank in a penetrating way; The main spray assembly comprises a first branch pipe which is connected to the top surface of the medicament pipe in a penetrating way, a second branch pipe is connected to the side wall of the first branch pipe, a first control valve is sleeved on the outer wall of the second branch pipe, one end of the second branch pipe is connected with a first liquid guide pipe, the first liquid guide pipe is connected to the inside of the spray tank in a penetrating way, one end of the first liquid guide pipe is connected with a first spray head, a capping part is arranged inside the first liquid guide pipe, one end of the capping part is connected to the side wall of the first branch pipe in a penetrating way, one end of the capping part, close to the first spray head, is an overhanging cleaning structure, the overhanging cleaning structure of the capping part pushes and translates through the water pressure inside the first branch pipe for inserting and cleaning a blockage inside the first spray head, a first water pressure sensor is connected to the inside the first liquid guide pipe in a penetrating way, and one end of the first water pressure sensor is inserted inside the capping part for detecting the water pressure inside the capping part.
  2. 2. The feedforward compensation device for adjusting the injection quantity of the deacidification agent in the flue gas treatment of the waste incineration plant according to claim 1, wherein a first inner guide ring, a separation ring and a second inner guide ring are fixed on the inner wall of the spray tank, a first spray groove is formed between the separation ring and the first inner guide ring, a second spray groove is formed between the separation ring and the second inner guide ring, a first spray head is arranged in the first spray groove, one end of the auxiliary spray assembly is arranged in the second spray groove, a plurality of first sliding grooves are formed in the first inner guide ring, a first baffle ring is connected to the inner wall of the first inner guide ring in a sliding manner, a plurality of first electric push blocks are connected to the outer wall of the first inner guide ring in a sliding manner, the first baffle ring is pushed by the first electric push blocks to seal the first spray groove, a second baffle ring is connected to the inner wall of the second inner guide ring in a sliding manner, a plurality of second sliding grooves are formed in the second inner baffle ring, a plurality of second electric push blocks are connected to the outer wall of the second inner guide ring in a sliding manner, and the second electric push blocks are connected to the second electric push blocks in the second baffle ring in a sliding manner to seal the second sliding grooves.
  3. 3. The feedforward compensation device for adjusting the injection quantity of the deacidification agent in the flue gas treatment of the waste incineration plant according to claim 2, wherein the jacking part comprises a push cylinder fixed on the inner wall of the first liquid guide pipe, one side of the push cylinder is connected with an isopipe in a penetrating way, one end of the isopipe is connected with the side wall of the first branch pipe in a penetrating way, the inside of the push cylinder is connected with a piston in a sliding way, a hydraulic cavity is formed between one end of the piston and the inside of the push cylinder, the first hydraulic sensor and one end of the isopipe are both connected with the inside of the hydraulic cavity, the other end of the piston is connected with a guide cylinder, the guide cylinder is connected with the outside of the push cylinder in a penetrating way, the outer wall of the guide cylinder is sleeved with a first spring, one end of the guide cylinder, which is far away from the piston, is sleeved with a limiting block, and the clear hole needle and the first spray head are positioned on the same horizontal central line.
  4. 4. The feedforward compensation device for adjusting the injection quantity of the deacidification agent in the flue gas treatment of the waste incineration plant according to claim 3, wherein the main injection assembly further comprises a blocking component, the blocking component is sleeved on the outer wall of the guide tube and is slidably connected inside the first liquid guide tube, the side wall of the first liquid guide tube is in through connection with a drainage tube, one side of the drainage tube is in through connection with a compensation tube, one end of the compensation tube is in through connection with the inside of the first spray head, one end of the drainage tube is connected with an adjusting bolt, the adjusting bolt is rotated inside the drainage tube to adjust the size of an interface communicated between the drainage tube and the compensation tube, and the blocking component is pushed inside the first liquid guide tube to slide through the guide tube so that the blocking component opens the interface between the drainage tube and the first liquid guide tube.
  5. 5. The feedforward compensation device of adjusting the spraying amount of the deacidification agent in the flue gas treatment of the waste incineration plant according to claim 4, wherein the blocking component comprises a fixed block sleeved and fixed on the outer wall of the guide cylinder, the outer wall of the fixed block is sleeved and connected with a sealing ring, and the sealing ring is connected with the inner wall of the first liquid guide pipe in a sliding manner.
  6. 6. The feedforward compensation device for adjusting the injection amount of the deacidification agent in the flue gas treatment of the waste incineration plant according to claim 5, wherein the blocking component further comprises a locking and blocking body, the locking and blocking body is fixed on the end face of the sealing ring, one side of the locking and blocking body is provided with a lifting structure, one end of the hole cleaning needle is elastically inserted into the guide cylinder, the lifting structure of the locking and blocking body is attached to the side wall of the limiting block, so that the hole cleaning needle is elastically outwards extended outside the guide cylinder; The main subassembly that spouts still includes presses the part, presses the part bottom through connection in inside the first catheter, presses the part top grafting in inside the first spout, presses the part setting in first electronic ejector pad bottom and lock between the liftable structure top of blocking the body, the liftable structure of blocking the body is pressed down through pressing the part to remove the laminating backstop to the stopper, in order to make clear hole needle elasticity receipts retract inside the guide cylinder.
  7. 7. The feed-forward compensation device for adjusting the injection quantity of the deacidification agent in the flue gas treatment of the waste incineration plant according to claim 6, wherein the lock baffle body comprises a support fixed on the end face of the sealing ring, two support frames are arranged in a mirror image mode relative to the vertical central line of the fixed block, limiting columns are fixed on the side walls of the support frames, sliding pushing frames are transversely connected between the two limiting columns, the limiting columns are connected inside the sliding pushing frames in a sliding mode, the sliding pushing frames are of inverted U-shaped structures, V-shaped spring pieces are connected between the side walls of the sliding pushing frames and the side walls of the support frames, two V-shaped spring pieces are arranged in a mirror image mode relative to the vertical central line of the sliding pushing frames, baffles are fixed on the inner walls of the sliding pushing frames, and one sides of the baffles are attached to the side walls of the limiting blocks.
  8. 8. The feed-forward compensation device for adjusting the injection amount of the deacidification agent in the flue gas treatment of the waste incineration plant according to claim 7, wherein the pressing component comprises a guide bolt penetrating through the top surface of the first liquid guiding pipe, the top end of the guide bolt is inserted into the first sliding groove, a pressing block is fixed at the bottom end of the guide bolt, a limiting ring is sleeved and fixed on the outer wall of the guide bolt, a second spring is sleeved and connected between the bottom surface of the limiting ring and the top surface of the first liquid guiding pipe, and the guide bolt is pushed to descend by the first electric pushing block so as to enable the pressing block to downwards push the sliding pushing frame.
  9. 9. The feedforward compensation device of adjusting the spraying amount of the deacidification agent in the flue gas treatment of the waste incineration plant according to claim 8, wherein the pressing component further comprises a positioning frame, the positioning frame is fixed on the bottom surface of the pressing block, the positioning frame is of an inverted Y-shaped structure, and the positioning frame is used for stopping the positioning limiting block.
  10. 10. The feedforward compensation device for adjusting the injection quantity of the deacidification agent in the flue gas treatment of the waste incineration plant according to claim 1, wherein the auxiliary injection component comprises a third branch pipe which is connected to the bottom surface of the agent pipe in a penetrating way, the side wall of the third branch pipe is connected with a fourth branch pipe, the outer wall of the fourth branch pipe is sleeved with a second control valve, one end of the fourth branch pipe is connected with a second liquid guide pipe, the second liquid guide pipe is connected to the inside of the spray tank in a penetrating way, one end of the second liquid guide pipe is connected with a second spray head, and the top surface of the second liquid guide pipe is connected with a second water pressure sensor in a penetrating way.

Description

Feedforward compensation device for adjusting injection quantity of deacidification agent in flue gas treatment of garbage incineration plant Technical Field The application relates to the technical field of flue gas treatment, in particular to a feedforward compensation device for adjusting the injection quantity of a deacidification agent in flue gas treatment of a waste incineration plant. Background The garbage incineration is a core process of harmless and reduction treatment of the current municipal solid waste, and a large amount of flue gas containing sulfur, chlorine and other acid pollutants can be generated in the incineration process, if the flue gas is directly discharged, the environment is seriously polluted, and the human health is endangered, so that the flue gas purification treatment is a key link of supporting facilities of a garbage incineration plant. The deacidification treatment is used as a core procedure of flue gas purification, and is mainly characterized in that deacidification agents are uniformly sprayed into the flue gas to perform neutralization reaction with acid gas in the flue gas, so that acid pollutants are converted into harmless substances, and the flue gas is discharged up to the standard, the deacidification efficiency is directly determined by the spraying quantity and the spraying uniformity of the deacidification agents, and the stable control of the spraying quantity is highly related to the smoothness of a spray head and the running state of a pipeline, so that the deacidification treatment is a core element for guaranteeing the deacidification effect of the flue gas. In the existing flue gas deacidification process of the waste incineration plant, the common deacidification agent spraying device adopts a single-pipeline spraying layout, a spraying tank is used as a reaction carrier, the deacidification agent is conveyed to a spraying pipeline through a medicament pump, and sprayed into the spraying tank after being atomized by a spray head, the deacidification agent is reversely contacted with rising flue gas to complete deacidification reaction, a part of the device is provided with a simple flow regulating valve, the sprayed quantity of the deacidification agent is manually or semi-automatically regulated, the flue gas air inflow is manually regulated and controlled through a conventional valve, the blocking condition of the spray head is checked by means of manual regular inspection in the operation process, the whole is based on the core operation principle of 'passive spraying, regular maintenance and post fault treatment', and impurities such as dust doped in the waste incineration flue gas are easily adhered to the inner wall surface of the spray head nozzle, after long-term flue gas treatment, the spray head is easy to be blocked, the deacidification agent spraying quantity is insufficient and uneven, deacidification efficiency is suddenly reduced, manual dredging is required after general blocking, continuity of flue gas treatment is seriously affected, fluctuation is caused, the deacidification agent spraying quantity is greatly fluctuant is greatly caused after the main spray head is blocked, a front feed compensation mechanism is lacked, and deacidification stability is difficult to be ensured. In view of this, we propose a feed-forward compensation device for deacidification agent injection amount adjustment. Disclosure of Invention The application aims to provide a feedforward compensation device for adjusting the injection quantity of a deacidification agent in the flue gas treatment of a waste incineration plant, and solves the technical problems in the background technology. The technical scheme of the application provides a feedforward compensation device for adjusting the injection quantity of deacidification agent in flue gas treatment of a garbage incineration plant, which comprises a spray tank, wherein the bottom end of the spray tank is connected with a guide pipe, the side wall of the guide pipe is connected with an air inlet pipe, the outer wall of the air inlet pipe is sleeved with a third control valve, the outer wall of the spray tank is sleeved with a medicament pipe with an annular structure, the top surface of the medicament pipe is connected with a plurality of groups of main spray components, the bottom surface of the medicament pipe is connected with a plurality of groups of auxiliary spray components, and one ends of the main spray components and the auxiliary spray components are all connected in the spray tank in a penetrating way; The main spray assembly comprises a first branch pipe which is connected to the top surface of the medicament pipe in a penetrating way, a second branch pipe is connected to the side wall of the first branch pipe, a first control valve is sleeved on the outer wall of the second branch pipe, one end of the second branch pipe is connected with a first liquid guide pipe, the first liquid guide pipe