CN114857922A - Carbon dioxide recovery system for cement production - Google Patents

Carbon dioxide recovery system for cement production Download PDF

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Publication number
CN114857922A
CN114857922A CN202110147735.7A CN202110147735A CN114857922A CN 114857922 A CN114857922 A CN 114857922A CN 202110147735 A CN202110147735 A CN 202110147735A CN 114857922 A CN114857922 A CN 114857922A
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CN
China
Prior art keywords
carbon dioxide
equipment
rotary kiln
cement
raw material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110147735.7A
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Chinese (zh)
Inventor
许利
肖永锋
周兆印
张明忠
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Yangquan Jidong Cement Co ltd
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Yangquan Jidong Cement Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yangquan Jidong Cement Co ltd filed Critical Yangquan Jidong Cement Co ltd
Priority to CN202110147735.7A priority Critical patent/CN114857922A/en
Publication of CN114857922A publication Critical patent/CN114857922A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/50—Carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • Y02P40/18—Carbon capture and storage [CCS]

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a carbon dioxide recovery system for cement production, which comprises a dry-process rotary kiln, wherein one side of the lower end of the dry-process rotary kiln is provided with a blast device, one side of the upper end of the dry-process rotary kiln is connected with two cloth bag dust removal devices, the lower ends of the two cloth bag dust removal devices are jointly connected with a gas pipe, one end of the gas pipe is connected with a carbon dioxide dust removal device, the lower end of the carbon dioxide dust removal device is connected with a liquid carbon dioxide preparation device, one end of the liquid carbon dioxide preparation device is connected with a supercharger, the supercharger is provided with a storage tank, and the dry-process rotary kiln is connected with a production system. The invention can well recover and purify the carbon dioxide generated in production, thereby facilitating the liquefaction and storage of the carbon dioxide, and meanwhile, the invention can adopt a brand new process for production, thereby improving the production efficiency and quality, reducing the energy consumption and improving the productivity.

Description

Carbon dioxide recovery system for cement production
Technical Field
The invention relates to the technical field of gas recovery, in particular to a carbon dioxide recovery system for cement production.
Background
The cement is a hydraulic cementing material which is prepared by firing clay and limestone into blocks and then grinding the blocks.
The cement can produce a large amount of carbon dioxide in the production process, the carbon dioxide is generally removed through simple recovery, the emission quality is improved, but the efficiency is low, the carbon dioxide cannot be well collected, and the carbon dioxide cannot be reused in a targeted mode.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a carbon dioxide recovery system for cement production.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a carbon dioxide recovery system for cement manufacture, includes the dry process rotary kiln, air-blast equipment is installed to dry process rotary kiln's lower extreme one side, dry process rotary kiln's upper end one side is connected with two sack dust collecting equipment, and two sack dust collecting equipment's lower extreme is connected with the gas-supply pipe jointly, the one end of gas-supply pipe is connected with carbon dioxide dust collecting equipment, carbon dioxide dust collecting equipment's lower extreme is connected with liquid carbon dioxide preparation equipment, the one end of liquid carbon dioxide preparation equipment is connected with the booster, install the storage jar on the booster, be connected with production system on the dry process rotary kiln.
Preferably, the production system comprises a raw material homogenizing device connected to one side of the dry rotary kiln, one end of the raw material homogenizing device is connected with an additive storage box, the additive storage box is connected with a humidifying tower and two waste gas processors, one end of the additive storage box is connected with a raw material grinding device, the upper end of the raw material grinding device is connected with a conveying pipe, the conveying pipe is connected with a plurality of raw material proportioning bins, one end of each raw material proportioning bin is connected with a limestone storage bin, one side of each limestone storage bin is provided with a pulverizer, the pulverizer corresponds to the limestone storage bin, the other end of the dry rotary kiln is connected with a kiln tail preheating device, one end of the kiln tail preheating device is connected with a decomposing furnace, the decomposing furnace and the dry rotary kiln are jointly connected with a pulverized coal grinding device, one side of the decomposing furnace is connected with a clinker storage bin, one side of grog storage silo is connected with the feeder, be connected with cement dispensing equipment on the feeder, the one end of feeder is connected with cement grinding equipment, cement grinding equipment's one end is connected with the storage silo.
Preferably, the pulverizer employs a roller pulverizing apparatus.
Preferably, the raw material grinding equipment adopts a cement ball mill.
Preferably, the carbon dioxide dust removal equipment adopts low-speed cloth bag dust removal equipment.
Preferably, the pulverizer and the limestone storage bin are connected through a belt conveyor.
Compared with the prior art, the invention has the beneficial effects that:
1. the recovered carbon dioxide can be well purified and liquefied through the actions of the cloth bag dust removing equipment, the carbon dioxide dust removing equipment, the liquid carbon dioxide preparation equipment and the supercharger, so that the carbon dioxide is conveniently stored in the storage tank, is convenient to recycle and improves the using effect of the carbon dioxide;
2. the dry-method rotary kiln is connected with the material preparation equipment and the clinker production equipment, so that the cement can be well produced, the production quality of the cement is improved, and the energy consumption is reduced;
in conclusion, the invention can well recover and purify the carbon dioxide generated in production, thereby facilitating the liquefaction and storage of the carbon dioxide, and simultaneously can adopt a brand new process for production, thereby improving the production efficiency and quality, reducing the energy consumption and improving the productivity.
Drawings
FIG. 1 is a flow chart of cement production in a carbon dioxide recovery system for cement production according to the present invention;
FIG. 2 is a connecting structure diagram of a carbon dioxide recovery system for cement production according to the present invention;
in the figure: 1 pulverizer, 2 limestone storage bins, 3 raw material proportioning boxes, 4 conveying pipes, 5 raw material grinding devices, 6 additive storage bins, 7 waste gas processors, 8 humidifying towers, 9 raw material homogenizing devices, 10 dry-method rotary kilns, 11 kiln tail preheating devices, 12 decomposing furnaces, 13 coal powder grinding devices, 14 clinker storage bins, 15 cement proportioning devices, 16 conveying devices, 17 cement grinding devices, 18 storage bins, 19 air blowing devices, 20 cloth bag dust removing devices, 21 carbon dioxide dust removing devices, 22 liquid carbon dioxide preparation devices, 23 superchargers and 24 storage tanks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, a carbon dioxide recovery system for cement production, includes dry process rotary kiln 10, and air-blast equipment 19 is installed to dry process rotary kiln 10's lower extreme one side, and air-blast equipment 19 is connected with external corollary equipment, and the extraction air that can be fine makes it get into dry process rotary kiln 10, helps promoting combustion efficiency, promotes work efficiency to the messenger gas that can be fine flows, promotes cycle efficiency.
In the invention, one side of the upper end of the dry rotary kiln 10 is connected with two cloth bag dust removal devices 20, dust in gas can be well removed, the lower ends of the two cloth bag dust removal devices 20 are connected with a gas pipe together to facilitate gas flow, one end of the gas pipe is connected with a carbon dioxide dust removal device 21, the carbon dioxide dust removal device 21 adopts a low-speed cloth bag dust removal device to ensure dust removal efficiency, the lower end of the carbon dioxide dust removal device 21 is connected with a liquid carbon dioxide preparation device 22, one end of the liquid carbon dioxide preparation device 22 is connected with a supercharger 23, a storage tank 24 is arranged on the supercharger 23, carbon dioxide enters the liquid carbon dioxide preparation device 22 and enters the storage tank 24 under the action of the supercharger 23, and the dry rotary kiln 10 is connected with a production system to facilitate cement production and improve working efficiency and quality.
According to the invention, the production system comprises a raw material homogenizing device 9 connected to one side of a dry-method rotary kiln 10, one end of the raw material homogenizing device 9 is connected with an additive storage box 6, the additive storage box 6 is connected with a humidifying tower 8 and two waste gas processors 7, one end of the additive storage box 6 is connected with a raw material grinding device 5, the raw material grinding device 5 adopts a cement ball mill and can well grind and grind raw materials, the upper end of the raw material grinding device 5 is connected with a conveying pipe 4, the conveying pipe 4 is connected with a plurality of raw material proportioning boxes 3, and ingredients enter raw material powder, so that the proportioning of the materials can be well guaranteed, and the quality of a final finished product can be improved.
According to the invention, one end of the raw material batching box 3 is connected with the limestone storage bin 2, so that the limestone storage bin is convenient to store, the pulverizer 1 is arranged on one side of the limestone storage bin 2, and the pulverizer 1 adopts roller type pulverizing equipment, so that limestone can be well pulverized, the subsequent pulverizing operation is convenient, and the pulverizing effect and quality are improved.
In the invention, a pulverizer 1 corresponds to a limestone storage bin 2, the pulverizer 1 is connected with the limestone storage bin 2 through a belt conveyor, the belt conveyor is convenient for conveying limestone, the other end of a dry-method rotary kiln 10 is connected with a kiln tail preheating device 11, one end of the kiln tail preheating device 11 is connected with a decomposing furnace 12, the decomposing furnace 12 and the dry-method rotary kiln 10 are jointly connected with a pulverized coal grinding device 13, one side of the decomposing furnace 12 is connected with a clinker storage bin 14, one side of the clinker storage bin 14 is connected with a material conveyer 16, the material conveyer 16 is connected with a cement batching device 15, one end of the material conveyer 16 is connected with a cement grinding device 17, and one end of the cement grinding device 17 is connected with a storage bin 18, so that the clinker grinding device can be well stored.
In the invention, the main raw material limestone of cement is obtained by blasting a mine, the limestone is crushed, the raw materials are stored and reserved, raw materials meeting requirements are configured according to the requirements of clinker components and are matched in proportion, the materials with certain fineness are ground, raw material powder and high-temperature hot gas are subjected to heat exchange in a suspension state in a cyclone preheater system, the raw material powder enters a dry rotary kiln 10, impurities in dust can be well removed by arranging a cloth bag dust removal device 20, powder can be better removed by a carbon dioxide dust removal device 21, carbon dioxide is extracted, the recovered carbon dioxide can be further purified and liquefied by matching a liquid carbon dioxide preparation device 22 and a supercharger 23, and the recovered carbon dioxide is conveniently stored in a storage tank 24 and is convenient to recycle.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (6)

1. A carbon dioxide recovery system for cement production comprises a dry rotary kiln (10), and is characterized in that: air-blast equipment (19) is installed to lower extreme one side of dry process rotary kiln (10), upper end one side of dry process rotary kiln (10) is connected with two sack dust collecting equipment (20), and the lower extreme of two sack dust collecting equipment (20) is connected with the gas-supply pipe jointly, the one end of gas-supply pipe is connected with carbon dioxide dust collecting equipment (21), the lower extreme of carbon dioxide dust collecting equipment (21) is connected with liquid carbon dioxide preparation equipment (22), the one end of liquid carbon dioxide preparation equipment (22) is connected with booster (23), install storage jar (24) on booster (23), be connected with production system on dry process rotary kiln (10).
2. The carbon dioxide recovery system for cement production according to claim 1, wherein: the production system comprises raw material homogenizing equipment (9) connected to one side of a dry rotary kiln (10), one end of the raw material homogenizing equipment (9) is connected with an additive storage box (6), the additive storage box (6) is connected with a humidifying tower (8) and two waste gas processors (7), one end of the additive storage box (6) is connected with raw material grinding equipment (5), the upper end of the raw material grinding equipment (5) is connected with a conveying pipe (4), the conveying pipe (4) is connected with a plurality of raw material proportioning bins (3), one end of each raw material proportioning bin (3) is connected with a limestone storage bin (2), one side of the limestone storage bin (2) is provided with a pulverizer (1), the pulverizer (1) corresponds to the limestone storage bin (2), and the other end of the dry rotary kiln (10) is connected with kiln tail preheating equipment (11), the one end of kiln tail preheating equipment (11) is connected with dore (12), dore (12) and dry process rotary kiln (10) are connected with buggy and grind equipment (13) jointly, one side of dore (12) is connected with grog storage storehouse (14), one side of grog storage storehouse (14) is connected with feeder (16), be connected with cement dispensing equipment (15) on feeder (16), the one end of feeder (16) is connected with cement grinding equipment (17), the one end of cement grinding equipment (17) is connected with storage silo (18).
3. The carbon dioxide recovery system for cement production as claimed in claim 2, wherein: the pulverizer (1) adopts roller type pulverizing equipment.
4. The carbon dioxide recovery system for cement production according to claim 2, wherein: the raw material grinding equipment (5) adopts a cement ball mill.
5. The carbon dioxide recovery system for cement production according to claim 1, wherein: the carbon dioxide dust removing equipment (21) adopts low-speed cloth bag dust removing equipment.
6. The carbon dioxide recovery system for cement production according to claim 2, wherein: the pulverizer (1) is connected with the limestone storage bin (2) through a belt conveyor.
CN202110147735.7A 2021-02-03 2021-02-03 Carbon dioxide recovery system for cement production Pending CN114857922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110147735.7A CN114857922A (en) 2021-02-03 2021-02-03 Carbon dioxide recovery system for cement production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110147735.7A CN114857922A (en) 2021-02-03 2021-02-03 Carbon dioxide recovery system for cement production

Publications (1)

Publication Number Publication Date
CN114857922A true CN114857922A (en) 2022-08-05

Family

ID=82623285

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110147735.7A Pending CN114857922A (en) 2021-02-03 2021-02-03 Carbon dioxide recovery system for cement production

Country Status (1)

Country Link
CN (1) CN114857922A (en)

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