CN111825359A - Crushing and pre-burning furnace device for co-processing semi-solid waste in cement kiln - Google Patents
Crushing and pre-burning furnace device for co-processing semi-solid waste in cement kiln Download PDFInfo
- Publication number
- CN111825359A CN111825359A CN202010879041.8A CN202010879041A CN111825359A CN 111825359 A CN111825359 A CN 111825359A CN 202010879041 A CN202010879041 A CN 202010879041A CN 111825359 A CN111825359 A CN 111825359A
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- furnace
- crushing
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- rotating
- solid waste
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- 239000002910 solid waste Substances 0.000 title claims abstract description 24
- 239000004568 cement Substances 0.000 title claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 239000011819 refractory material Substances 0.000 claims 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000000314 lubricant Substances 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000011162 core material Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000009270 solid waste treatment Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000010849 combustible waste Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011278 co-treatment Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012056 semi-solid material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/432—Preheating without addition of fuel
-
- 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
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
-
- 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
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
-
- 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
Abstract
The invention belongs to the field of cement kiln co-processing solid waste treatment, and relates to a crushing and pre-burning furnace device for cement kiln co-processing semi-solid waste. The crushing and pre-burning furnace device comprises a furnace body, a feeding system, an impeller crushing system, an air locking and heat insulating system and a power system; the upper end of the pre-combustion furnace device is fed by pumping and is provided with an air outlet to be connected with the decomposing furnace, and the lower end of the pre-combustion furnace device is introduced with tertiary air as a heat source and is provided with a feed opening to be connected with the decomposing furnace; semi-solid waste to be treated enters a hearth through a feeding system, is primarily broken up through the feeding system and then is secondarily broken up through an impeller breaking system, preheating and combustion are carried out under the action of tertiary air, and then residual waste enters a cement kiln to be incinerated. The invention solves the problems of unstable cement kiln thermal environment, reduced clinker product quality and reduced clinker yield caused by the direct pumping of the traditional semisolid waste into a decomposing furnace to generate yellow core materials.
Description
Technical Field
The invention belongs to the field of solid waste treatment, and relates to a crushing and pre-burning furnace device for co-processing semi-solid waste by a cement kiln.
Background
With the rapid development of the Chinese social economy, a large amount of solid wastes generated in the life and production process cannot be effectively and timely disposed, so that the serious environmental pollution and economic loss are caused, and the physical health of residents is harmed. In recent years, our country encourages a novel dry-method cement kiln to co-treat solid wastes, but the solid wastes are various, and for the process of co-treating the solid wastes by the cement kiln, the biggest challenge is that the thermal environment in the kiln can be influenced by the solid wastes entering the kiln.
Particularly, in the process of putting semi-solid waste containing combustible liquid with high heat value into a kiln, the material is agglomerated and enters a decomposing furnace to be not completely combusted, so that yellow core materials (core materials) are formed. After the flammable liquid with high heat value volatilizes, the flammable liquid is contacted with hot air to be directly combusted, so that heat is generated greatly, the thermal environment in the decomposing furnace is further influenced, and coal and raw materials in the decomposing furnace cannot be sufficiently combusted originally. The cement manufacturing enterprises directly dispose of the wastes, which causes the reduction of the output and the quality of the cement kiln clinker, and the cement kiln clinker is irrevocable, so that a large number of cement manufacturing enterprises are forbidden.
The other part of the cement kiln adopts a large semi-solid material scattering spray gun for the cooperative disposal project, but the material distribution effect of the spray gun on the semi-solid waste can not meet the expected requirement of a cement enterprise, but the spray gun is idle in the later transformation process, and the problem that the thermal environment stability of the decomposing furnace is influenced by material combustion can not be solved.
Disclosure of Invention
In view of this, the present invention aims to: the crushing pre-combustion furnace device for the cement kiln to co-treat the semi-solid waste has the advantages of being low in investment cost, high in safety coefficient, small in modification difficulty, simple in structure and the like, and can effectively improve the treatment efficiency of the semi-solid waste, reduce the influence of the co-treatment process on the original production process of the cement kiln and solve the problem that the semi-solid waste generates yellow core materials when entering the kiln.
The technical scheme adopted by the invention is as follows: adopting a pre-combustion furnace as a side furnace of the decomposing furnace; when entering through a feeding system at the top of the pre-combustion furnace, materials are firstly primarily scattered by scattering nozzles in the feeding system, then the materials are scattered again through a high-rotation-speed crushing impeller, wherein most of high-heat-value combustible waste and tertiary air at about 800 ℃ are combusted, and then the combustible waste enters the decomposition furnace through a hot air outlet at the top of the pre-combustion furnace; the retention time of a small part of solid large particles which cannot be scattered is prolonged in the process of collision with the impeller, the solid large particles are dried by heat generated by combustion, enter the decomposing furnace through the feed opening, then fall into the cement kiln, and finally are completely burnt in the cement kiln burning section.
The feeding system comprises an air locking feeding valve, and accidents caused by the fact that hot air enters the semi-solid waste conveying pipeline through the feeding hole when feeding or no material enters are prevented.
The impeller crushing system breaks up materials and generates a vertical upward lifting force at the same time, so that hot air in the pre-combustion furnace and small microparticles driven by the hot air enter the decomposing furnace through the hot air outlet.
Optionally, the rotating speed of the impeller crushing system can be adjusted by adjusting the rotating speed of the motor according to the amount of the materials entering the furnace.
Optionally, one blade pointing to the rotating shaft vertically is mounted on the same level of the swing arm, and multiple blades can be mounted on the same swing arm.
Optionally, the impeller crushing system may be provided with a plurality of blades pointing to the radial arm at the same horizontal height on the same rotating shaft, and the blades are vertically staggered with the radial arm blades.
The invention has the beneficial effects that:
the invention can improve the treatment efficiency of common semi-solid waste, and can effectively reduce the influence of the material entering a kiln to the thermal environment of a decomposition furnace, improve the treatment efficiency of the material, reduce the influence of the semi-solid waste addition to the clinker generation and solve the problem that the semi-solid waste generates yellow core materials (core materials) in the addition process aiming at the semi-solid waste containing high-heating-value liquid.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1, fig. 2 and fig. 3, reference numerals in the drawings respectively denote: 1-locking air feed valve, 2-crushing blade, 3-rotating shaft, 4-hot air outlet, 5-feeding port, 6-tertiary air port, 7-air compressor, 8-cold air charging port, 9-discharging port, 10-rotary arm, 11-locking air heat insulation cover, 12-furnace shell, 13-rotary rail, 14-feeding nozzle and 15-variable speed motor.
The invention relates to a crushing and pre-burning furnace device for cooperatively treating semi-solid waste by a cement kiln, which specifically comprises a device consisting of a furnace body, a feeding system, an impeller crushing system, an air locking and heat insulating system and a power system;
the furnace body consists of a 4-hot air outlet, a 5-feeding hole, a 6-tertiary air port, a 9-blanking hole and a 12-furnace shell;
the feeding system consists of a 1-air locking feeding valve and a 14-feeding spray head;
the impeller crushing system consists of 2-crushing blades, 3-rotating shafts, 10-rotating arms and 13-rotating rails;
the air locking and heat insulating system consists of a 7-air compressor, an 8-cold air inflation inlet and an 11-air locking and heat insulating cover;
the power system mainly comprises a 1-speed change motor and an auxiliary transmission device.
The operation process of the invention is as follows: the semi-solid waste is pumped to a feeding nozzle at the upper end of a feeding hole by a plunger pump through a pipeline connected with an air locking feeding valve to be primarily scattered, and then scattered and crushed by a high-speed crushing blade of an impeller crushing system; the combustible small micro-particles are heated by tertiary air to the ignition point, are combusted, and are lifted to a hot air outlet along with hot air to enter a decomposing furnace; after being preheated by high-temperature environment formed by tertiary air and combustible particles in the process of collision and scattering of the multistage blades, the incombustible large particles fall into the feed opening and enter the decomposing furnace, and are finally burned into clinker in the cement kiln.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (5)
1. A crushing and pre-burning furnace device for cooperatively treating semi-solid waste by a cement kiln is characterized by comprising a furnace body, a feeding system, an impeller crushing system, an air locking and heat insulating system and a power system; the furnace body is cylindrical, the top end of the furnace body comprises a feeding system and a hot air outlet, the bottom of the furnace body is a conical feeding hole, and the furnace body is connected with the decomposing furnace above a C4 feeding pipe of the decomposing furnace; and a part of tertiary air introduced into the furnace body is used as a heat source to preheat materials.
2. The feeding system of claim 1 is installed above the feeding hole and comprises an air locking feeding valve and a material scattering spray head from top to bottom; the material scattering spray head utilizes compressed air to mix and scatter semi-solid waste, and prevents materials from entering the interior of the pre-combustion furnace in a conglomerate manner.
3. The impeller crushing system of claim 1 mounted vertically inside a precombustor furnace body;
the impeller crushing system is respectively composed of a rotating shaft with a plurality of groups of blades and a plurality of spiral arms with a plurality of groups of blades;
the blades are made of high-temperature refractory materials, and a group of crushing impellers is formed by a plurality of blades at the same horizontal height;
the rotary shaft vertically extends into the furnace from the center of a circle at the top of the pre-combustion furnace, the spiral arm is arranged on an annular rotating track at the top of the pre-combustion furnace, the annular rotating track and the top of the pre-combustion furnace are in the same center of a circle, and the rotating speed of the rotating track is different from that of the rotary shaft during operation;
the spiral arm is not directly contacted with the furnace wall, the top end of the spiral arm is fixed by a rotating rail, and the lower end of the spiral arm is fixed by annular refractory material;
the rotating shaft and the rotating rail are fixed through a concave rail at the upper end of the furnace top, and the rotating shaft and the rotating rail (with a rotating arm) are embedded with the concave rail by means of dead weight;
high-temperature-resistant steel balls are embedded in the concave rail, and a lubricant can be added into the concave rail under the control of a machine during operation, so that the friction force between the concave rail and the rotating shaft and between the concave rail and the rotating rail is reduced.
4. The power system of claim 1 is installed on the top of the outer side of the pre-combustion furnace and used for providing power for the impeller crushing system; the power system is 2 groups of variable speed motors, and the rotating shaft and the rotating rail are driven to rotate through gear engagement.
5. The air locking and heat insulating system according to claim 1 is composed of an air locking and heat insulating cover, an air compressor and a pressure gauge;
the air locking heat insulation cover is located between the power system and the pre-combustion furnace, cold air is injected into the air locking heat insulation cover by the air compressor, and the pressure gauge guarantees that the pressure in the air locking heat insulation cover is not less than the pressure in the pre-combustion furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010879041.8A CN111825359A (en) | 2020-08-27 | 2020-08-27 | Crushing and pre-burning furnace device for co-processing semi-solid waste in cement kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010879041.8A CN111825359A (en) | 2020-08-27 | 2020-08-27 | Crushing and pre-burning furnace device for co-processing semi-solid waste in cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111825359A true CN111825359A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010879041.8A Pending CN111825359A (en) | 2020-08-27 | 2020-08-27 | Crushing and pre-burning furnace device for co-processing semi-solid waste in cement kiln |
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| Country | Link |
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| CN (1) | CN111825359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700345A (en) * | 2022-04-03 | 2022-07-05 | 生态环境部南京环境科学研究所 | Comprehensive utilization device for hazardous waste vitreous body treatment product and use method |
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|---|---|---|---|---|
| JPH1046155A (en) * | 1996-08-05 | 1998-02-17 | Babcock Hitachi Kk | Thermal cracking furnace |
| FR2924202A1 (en) * | 2007-11-28 | 2009-05-29 | Appalette Tourtellier Systemes | INSTALLATION AND METHOD FOR STORING AND FEEDING A ROTARY OVEN |
| CN103204642A (en) * | 2013-04-02 | 2013-07-17 | 广西中盟世纪环保咨询有限责任公司 | Novel dry-process cement kiln household garbage incineration method |
| CN105485695A (en) * | 2015-12-28 | 2016-04-13 | 碎得机械(北京)有限公司 | Feeding system and method for waste incineration pretreatment |
| CN106040405A (en) * | 2016-07-26 | 2016-10-26 | 新乡市长城机械有限公司 | Pre-grinding vertical mill united semi-finish grinding system with built-in powder concentrator |
| CN209325789U (en) * | 2018-11-20 | 2019-08-30 | 北京中丹科技有限公司 | It is a kind of to utilize cement kiln synergic processing solid waste integration unit |
| CN210880176U (en) * | 2019-08-30 | 2020-06-30 | 重庆华恒远大建筑科技有限公司 | Cement kiln curing means |
| CN210891662U (en) * | 2019-08-11 | 2020-06-30 | 浙江天象环境服务有限公司 | Solid waste pre-incineration system for cooperative disposal of cement kiln |
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-
2020
- 2020-08-27 CN CN202010879041.8A patent/CN111825359A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700345A (en) * | 2022-04-03 | 2022-07-05 | 生态环境部南京环境科学研究所 | Comprehensive utilization device for hazardous waste vitreous body treatment product and use method |
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