CN216005680U

CN216005680U - Novel multi-stage energy-saving calcining furnace for industrial byproduct gypsum

Info

Publication number: CN216005680U
Application number: CN202122310602.5U
Authority: CN
Inventors: 马军生; 申会民
Original assignee: Shouguang Maishi Technology Partnership LP
Current assignee: Shouguang Maishi Technology Partnership LP
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-11
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a novel multistage energy-saving calcining furnace for industrial by-product gypsum, which comprises a furnace body with three stages, wherein a first-stage vulcanizing heating pipe, a second-stage vulcanizing heating pipe and a third-stage vulcanizing heating pipe are respectively arranged in the furnace body, the inlet of the third-stage vulcanizing heating pipe is connected with steam, the outlet of the third-stage vulcanizing heating pipe is communicated with the inlet of a third hydrophobic flash tank, the outlet of the third-stage vulcanizing heating pipe is communicated with the inlet of the second-stage vulcanizing heating pipe, the outlet of the third-stage vulcanizing heating pipe is communicated with the inlet of a second hydrophobic flash tank, the outlet of the third-stage vulcanizing heating pipe is communicated with the inlet of the first-stage vulcanizing heating pipe, and the outlet of the third-stage vulcanizing heating pipe is provided with a steam outlet pipe; the bottom of furnace body and wind send the pipeline intercommunication, the top with gather dust manifold intercommunication, hydrophobic flash vessel all communicates with the condensation water pitcher. The utility model discloses tertiary calcination altogether, the polyphone intercommunication between the three furnace body, steam carries out hierarchical heat transfer to the material in the three furnace body, and heat utilization rate is high, and the heat transfer is effectual, and steam discharge temperature is showing and is reducing, has reduced the retarder quantity, and it is obvious to calcine the effect and also promote.

Description

Novel multi-stage energy-saving calcining furnace for industrial byproduct gypsum

Technical Field

The utility model belongs to the technical field of forge burning furnace, concretely relates to novel multistage energy-conserving forge burning furnace for industry by-product gypsum.

Background

With the new trend of energy conservation and wall reformation of the current buildings, novel energy-saving and environment-friendly wall materials are urgently needed, and with the increasing acceptance of concepts of ecological buildings and green building materials, functional novel green building materials mainly made of gypsum are increasingly favored by the building industry; the gypsum products on the market are various and most of the gypsum products have better economic benefit. Therefore, how to utilize the characteristics of the industrial by-product gypsum and process the industrial by-product gypsum into various gypsum building material products by a feasible process method, and recycling and marketing the industrial waste is one of the most effective ways to solve the comprehensive utilization of the industrial by-product gypsum and the environmental protection.

At present, in the production process of industrial byproduct gypsum, crystal water is usually removed through drying and calcining processing, and the heat energy consumption during calcining becomes the maximum cost. The conventional calcining furnace adopts one inlet and one outlet, the temperature of steam before entering the calcining furnace is between 220 and 260 ℃, the temperature of the steam after being discharged is between 180 and 200 ℃, the heat exchange efficiency is low, the temperature is high when heat is discharged, and the waste is serious. In order to improve the calcination effect, a rough manner is mostly adopted, such as increasing the addition amount of a retarder and prolonging the calcination time and the calcination length, but the production cost is increased, the steam is utilized in the first grade, the calcination effect is improved, but the temperature of steam emission cannot be effectively reduced.

The production cost can be reduced only by fully utilizing the heat energy, and the energy-saving and environment-friendly requirements advocated by the state are met. Therefore, a novel multistage energy-saving calcining furnace for industrial byproduct gypsum is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem existing in the prior art and providing a novel multistage energy-saving calcining furnace for industrial byproduct gypsum to overcome the defects of the prior art.

In order to realize the aim, the utility model relates to a novel multi-stage energy-saving calcining furnace for industrial byproduct gypsum, which is characterized in that the calcining furnace comprises a first-stage furnace body, a second-stage furnace body and a third-stage furnace body,

the first-stage furnace body and the second-stage furnace body and the third-stage furnace body are respectively communicated in series through a first material string pipe and a second material string pipe, the first-stage furnace body is provided with a feeding hole, the third-stage furnace body is provided with a discharging hole,

the first-stage furnace body, the second-stage furnace body and the third-stage furnace body are respectively provided with a first-stage vulcanization heating pipe, a second-stage vulcanization heating pipe and a third-stage vulcanization heating pipe, the inlet end of the third-stage vulcanization heating pipe is communicated with the steam-distributing drum through a pipeline, the outlet end of the third-stage vulcanization heating pipe is communicated with the inlet end of the third drainage flash tank through a pipeline, the outlet end of the third hydrophobic flash tank is communicated with the inlet end of the second-stage vulcanization heating pipe through a pipeline, the outlet end of the second-stage vulcanization heating pipe is communicated with the inlet end of the second drainage flash tank through a pipeline, the outlet end of the second drainage flash vessel is communicated with the inlet end of the first-stage vulcanization heating pipe through a pipeline, the outlet end of the first-stage vulcanization heating pipe is communicated with the inlet end of a first drainage flash tank through a pipeline, and a steam outlet pipe is arranged at the outlet end of the first drainage flash tank;

the one-level furnace body the second grade furnace body with the bottom of tertiary furnace body is respectively through pipeline and wind pipeline intercommunication, the one-level furnace body the second grade furnace body with the top of tertiary furnace body is common with the manifold intercommunication that gathers dust, gather dust the end and the dust remover intercommunication of manifold, the branch steam pocket passes through pipeline and steam generator intercommunication, the hydrophobic flash tank of third hydrophobic flash tank the hydrophobic flash tank of second with first hydrophobic flash tank communicates through pipeline and condensation water pitcher respectively.

The utility model discloses compare with traditional one-level calcination mode, increased the two-stage and calcined, the polyphone intercommunication between the three furnace body, steam carries out hierarchical heat transfer to the material in the three furnace body, and heat utilization rate is high, and the heat transfer is effectual, and the temperature during steam emission is showing and is reducing, has reduced the addition of retarder simultaneously, and it is obvious that the effect of calcining also promotes.

Drawings

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

In figure 1, the feed inlet; 2. a first-stage furnace body; 3. a first-stage vulcanization heating pipe; 4. a dust collection header pipe; 5. a first material stringing pipe; 6. A secondary furnace body; 7. a secondary vulcanization heating pipe; 8. a second stringing pipe; 9. a third-stage furnace body; 10. a third-stage vulcanization heating pipe; 11. A discharge port; 12. a steam distribution drum; 13. a third hydrophobic flash tank; 14. a second hydrophobic flash tank; 15. a first drain flash tank; 16. a condensate tank; 17. and (4) an air conveying pipeline.

Detailed Description

For the purpose of better clarity of the description of the invention, reference will now be made in detail to the embodiments of the invention, which are illustrated in the accompanying drawings, and it will be apparent to those skilled in the art that the embodiments of the invention are merely examples, and that other drawings can be obtained from the drawings without inventive step.

Example one

Referring to fig. 1, the utility model relates to a novel multi-stage energy-saving calcining furnace for industrial byproduct gypsum, which comprises a first-stage furnace body 2, a second-stage furnace body 6 and a third-stage furnace body 9,

the first-stage furnace body 2 and the second-stage furnace body 6 and the third-stage furnace body 9 are respectively communicated in series through a first material stringing pipe 5 and a second material stringing pipe 8, the first-stage furnace body 2 is provided with a feeding hole 1, the third-stage furnace body 9 is provided with a discharging hole 11,

the first-stage furnace body 2, the second-stage furnace body 6 and the third-stage furnace body 9 are respectively provided with a first-stage vulcanization heating pipe 3, a second-stage vulcanization heating pipe 7 and a third-stage vulcanization heating pipe 10, the inlet end of the third-stage vulcanization heating pipe 10 is communicated with the steam-distributing drum 12 through a pipeline, the outlet end of the third-stage vulcanization heating pipe 10 is communicated with the inlet end of a third drainage flash tank 13 through a pipeline, the outlet end of the third hydrophobic flash tank 13 is communicated with the inlet end of the secondary vulcanization heating pipe 7 through a pipeline, the outlet end of the secondary vulcanization heating pipe 7 is communicated with the inlet end of a second drainage flash tank 14 through a pipeline, the outlet end of the second hydrophobic flash tank 14 is communicated with the inlet end of the first-stage vulcanization heating pipe 3 through a pipeline, the outlet end of the first-stage vulcanization heating pipe 3 is communicated with the inlet end of a first drainage flash tank 15 through a pipeline, and the outlet end of the first drainage flash tank 15 is provided with a steam outlet pipe;

the one-level furnace body 2 the second grade furnace body 6 with the bottom of tertiary furnace body 9 communicates with wind pipeline 17 through the pipeline respectively, the one-level furnace body 2 the second grade furnace body 6 with the top of tertiary furnace body 9 communicates with collection dust header 4 jointly, gather dust header 4's end and dust remover intercommunication, branch steam pocket 12 passes through pipeline and steam generator intercommunication, third hydrophobic flash tank 13 the hydrophobic flash tank 14 of second with first hydrophobic flash tank 15 communicates with the condensation water pitcher through the pipeline respectively.

The working principle is as follows:

steam route: the steam is firstly sent into a three-stage vulcanization heating pipe in a three-stage furnace body by the steam-distributing drum, and the powdery material is calcined and dried at high temperature, wherein the highest steam temperature is about 250 degrees. After steam subjected to primary heat exchange enters a third drainage flash vessel and condensed water is drained, the steam enters a secondary vulcanization heating pipe in a secondary furnace body to moderately calcine and dry powdery materials, and the steam temperature is about 200 degrees at the moment. Then, after steam subjected to secondary heat exchange enters a second drainage flash tank, after condensate water is drained, the steam finally enters a first-stage vulcanization heating pipe in a first-stage furnace body, low-temperature pre-drying is carried out on powdery materials, the steam temperature is about 150 degrees at the moment, after the steam subjected to pre-drying enters a first drainage flash tank, the steam is finally discharged after the condensate water is drained, and the temperature of the discharged steam is about 80 degrees.

Route of industrial by-product gypsum: after powdery materials enter the primary furnace body through the feeding hole, the primary vulcanization heating pipe heats and preddries the materials, and the primarily heated materials enter the secondary furnace body through the first series pipe under the wind conveying of the wind conveying pipe. After the secondary vulcanization heating pipe in the secondary furnace body calcines and dries the material at the medium temperature, the material enters the tertiary furnace body through the second material stringing pipe under the wind power conveying in the wind conveying pipeline to be calcined and dried at the high temperature, and the material meeting the requirement is discharged through the discharge hole under the wind power conveying in the wind conveying pipeline.

Through the three-level steam heating system of the three-level calcining furnace, the problems of low heat efficiency and waste of heat energy caused by the current one-level drying and calcining are solved. The industrial byproduct gypsum treated by the three-stage calcining furnace has prolonged initial and final setting time, reduces the addition amount of retarder and can better meet the use indexes of products such as plastering gypsum, gypsum-based self-leveling and the like.

Claims

1. A novel multistage energy-saving calcining furnace for industrial byproduct gypsum is characterized in that: it comprises a first-stage furnace body (2), a second-stage furnace body (6) and a third-stage furnace body (9),

the first furnace body (2) and the second furnace body (6) and the third furnace body (9) are respectively communicated in series through a first material stringing pipe (5) and a second material stringing pipe (8), the first furnace body (2) is provided with a feeding hole (1), the third furnace body (9) is provided with a discharging hole (11),

the one-level furnace body (2), second grade furnace body (6) with be equipped with one-level vulcanization heating pipe (3), second grade vulcanization heating pipe (7) and tertiary vulcanization heating pipe (10) in tertiary furnace body (9) respectively, the entry end of tertiary vulcanization heating pipe (10) is through pipeline and branch steam pocket (12) intercommunication, the exit end of tertiary vulcanization heating pipe (10) passes through the entry end intercommunication of pipeline and third hydrophobic flash tank (13), the exit end of third hydrophobic flash tank (13) pass through the pipeline with the entry end intercommunication of second grade vulcanization heating pipe (7), the exit end of second grade vulcanization heating pipe (7) passes through the pipeline and the entry end intercommunication of second hydrophobic flash tank (14), the exit end of second hydrophobic flash tank (14) pass through the pipeline with the entry end intercommunication of one-level vulcanization heating pipe (3), the exit end of one-level vulcanization heating pipe (3) passes through the pipeline and links the flash tank with the entry end of first hydrophobic flash tank (15) and expands the flash tank The outlet end of the first drainage flash tank (15) is provided with a steam outlet pipe;

the one-level furnace body (2) the second grade furnace body (6) with the bottom of tertiary furnace body (9) is respectively through pipeline and wind send pipeline (17) intercommunication, one-level furnace body (2) second grade furnace body (6) with the top of tertiary furnace body (9) is common with gather dust manifold (4) intercommunication, gather dust manifold (4) terminal and dust remover intercommunication, divide steam pocket (12) to pass through pipeline and steam generator intercommunication, third hydrophobic flash tank (13) second hydrophobic flash tank (14) with first hydrophobic flash tank (15) are respectively through pipeline and condensation water pitcher intercommunication.