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CN-224230729-U - Furnace gas waste heat recovery device of calcined furnace for producing sodium carbonate

CN224230729UCN 224230729 UCN224230729 UCN 224230729UCN-224230729-U

Abstract

The utility model discloses a device for recovering waste heat of furnace gas of a calcined soda production calciner, which relates to the technical field of calcined soda production and has the technical scheme that the device comprises a shell, wherein a spray head is arranged at the top of the shell; the movable gas distribution plate is connected to the inner side wall of the sliding frame in a sliding manner, when the gas waste heat recovery device of the calcined furnace gas for producing sodium carbonate disclosed by the utility model ventilates from the gas inlet of the shell, the movable gas distribution plate is upwards propped by gas pressure to uniformly distribute smoke, meanwhile, part of the gas distribution plate is not faster than the smoke passing through the gas holes, which rises from top to bottom, rises along the bottom of the dome plate and gathers to the middle convex part, so that the heat loss generated by the smoke attached to the shell wall is reduced, and when the gas supply is stopped, the movable gas distribution plate falls onto the fixed gas distribution plate under the action of the gravity of the movable gas distribution plate, and the inserted rods are inserted into the gas holes to mutually dredge dirt such as alkali dust in the vent holes, so that the anti-blocking performance is excellent.

Inventors

  • LIU SHUAI
  • JING CHUANQI
  • ZHU LONGFEI

Assignees

  • 连云港碱业有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (5)

  1. 1. The furnace gas waste heat recovery device of the calcined furnace for producing sodium carbonate is characterized by comprising a shell (1), wherein a spray head (2) is arranged at the top of the shell (1); the sliding frame (5) is fixed on the inner side wall of the shell (1); The movable air distribution disc (6) is connected to the inner side wall of the sliding frame (5) in a sliding mode, the movable air distribution disc (6) comprises a first circular arc top disc (603), a plurality of first air holes (604) are formed in the surface of the first circular arc top disc (603), a plurality of first inserting rods (605) are fixedly arranged at the bottom of the first circular arc top disc (603), and the first inserting rods (605) and the first air holes (604) are arranged in a staggered mode; the fixed air distribution plate (7) is fixed at the bottom of the sliding frame (5), the fixed air distribution plate (7) comprises a second circular arc top plate (702), a plurality of second air holes (703) are formed in the surface of the second circular arc top plate (702), a plurality of second inserting rods (704) are fixedly arranged on the top surface of the second circular arc top plate (702), and the second inserting rods (704) and the second air holes (703) are arranged in a staggered mode; The first plunger (605) may be mated with a second air vent (703) and the second plunger (704) may be mated with the first air vent (604).
  2. 2. The calcined furnace gas waste heat recovery device for soda production according to claim 1, wherein a water inlet of the spray head (2) is connected with a water pipe (3), and a valve (9) is arranged on the water pipe (3).
  3. 3. The calcined furnace gas waste heat recovery device for producing sodium carbonate according to claim 2, wherein the top and the bottom of the shell (1) are respectively provided with an air outlet (4) and a first water outlet (8), the outer side wall of the shell (1) is provided with a second water outlet (10) and an air inlet (11), the second water outlet (10) and the air inlet (11) are respectively distributed at two ends of the fixed air distribution plate (7), the air inlet (11) is close to the first water outlet (8), and the second water outlet (10) is close to the air outlet (4).
  4. 4. The calcined soda production calciner gas waste heat recovery device according to claim 3, wherein the carriage (5) comprises sliding columns (501) which are arranged on the inner side wall of the shell (1) in a circumferential equidistant array, and a top ring (502) is fixed on the top of the sliding columns (501).
  5. 5. The calcined furnace gas waste heat recovery device for soda production according to claim 4, wherein a first side ring (601) is fixed on the outer side wall of the first circular arc top plate (603), a sliding groove (602) is formed in the position, corresponding to the sliding column (501), of the outer side wall of the first side ring (601), the first side ring (601) is slidably connected to the outer side wall of the sliding column (501) through the sliding groove (602), and a second side ring (701) is fixed on the outer side wall of the second circular arc top plate (702) and is fixed on the inner side wall of the shell (1) through the second side ring (701).

Description

Furnace gas waste heat recovery device of calcined furnace for producing sodium carbonate Technical Field The utility model relates to the technical field of soda production, in particular to a furnace gas waste heat recovery device of a calcined furnace for soda production. Background When the ion desalting device of the self-provided thermal power plant water-converting workshop of the existing soda production enterprise prepares desalted water, the fresh water temperature needs to be stabilized at 20-25 ℃ throughout the year, the temperature index requirement of the desalted water preparation of the fresh water in the water-converting workshop can be met, hot steam is used for heating the water-converting workshop in winter to heat the water-converting workshop to meet the production normal operation, a large amount of steam energy is consumed, furnace gas generated by a combustion furnace has a certain temperature, and therefore the water-converting workshop can be connected with calcined furnace gas for replacing steam to realize heat exchange with the desalted water, and a heat exchanger is needed for waste heat recovery of the furnace gas. The existing heat exchangers for recovering the waste heat of the furnace gas comprise ‌ tube type heat exchangers ‌ (tube-and-shell type heat exchangers), ‌ sleeve type heat exchangers, ‌ coil type heat exchangers ‌ (such as immersed coil type heat exchangers) and ‌ fin type heat exchangers, and the like, wherein the ‌ coil type heat exchangers are divided into immersed type heat exchangers and spray type heat exchangers, the structure of the former heat exchangers is simple, but the heat transfer efficiency of the latter heat exchangers is low, and the latter heat exchangers are used for enhancing the heat transfer through spraying cooling water. The existing soda production calciner furnace gas waste heat recovery device is like a spray-type ‌ coil heat exchanger, furnace gas is introduced into the ‌ coil heat exchanger, demineralized water is sprayed outside the ‌ coil heat exchanger to exchange heat, the device is suitable for a use scene that furnace gas is cleaner, a large amount of dirt and alkali dust are mixed in the soda production calciner, even if the soda production calciner is introduced after being filtered by an external filter component such as a bag-type dust collector, the alkali dust with tiny particles still enters the heat exchange tube along with flue gas, the heat exchange tube is firmly adhered to the inner wall of the metal tube, the heat exchange tube is difficult to clean, the inner wall of the heat exchange tube is thickened easily for a long time, and the heat exchange efficiency is reduced. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model aims to provide a furnace gas waste heat recovery device of a calcined soda production calciner, so as to solve the technical problem that the service time of the existing furnace gas waste heat recovery device of the calcined soda production calciner is long and the heat exchange performance is easy to be reduced. In order to achieve the aim, the utility model provides the technical scheme that the furnace gas waste heat recovery device of the calcined soda production furnace comprises a shell, wherein a spray head is arranged at the top of the shell; the sliding frame is fixed on the inner side wall of the shell; The movable air distribution disc is connected to the inner side wall of the sliding frame in a sliding manner and comprises a first circular arc top disc, a plurality of first air holes are formed in the surface of the first circular arc top disc, a plurality of first inserted bars are fixedly arranged at the bottom of the first circular arc top disc, and the first inserted bars and the first air holes are arranged in a staggered manner; The fixed gas distribution plate is fixed at the bottom of the sliding frame and comprises a second circular arc top plate, a plurality of second air holes are formed in the surface of the second circular arc top plate, a plurality of second inserted bars are fixedly arranged on the top surface of the second circular arc top plate, and the second inserted bars and the second air holes are arranged in a staggered mode; The first insert rod may be mated with the second air hole, and the second insert rod may be mated with the first air hole. Further, the water inlet of the spray head is connected with a water pipe, and a valve is arranged on the water pipe. Further, the top and the bottom of the shell are respectively provided with an air outlet and a first water outlet, the outer side wall of the shell is provided with a second water outlet and an air inlet, the second water outlet and the air inlet are respectively distributed at two ends of the fixed air distribution plate, the air inlet is close to the first water outlet, and the second water outlet is close to the air outlet. Further, the sliding frame com