CN105198252A - Novel material curtain emission reduction device for rotary cement kiln - Google Patents
Novel material curtain emission reduction device for rotary cement kiln Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 68
- 230000009467 reduction Effects 0.000 title claims abstract description 28
- 239000004568 cement Substances 0.000 title abstract description 26
- 230000007480 spreading Effects 0.000 claims abstract description 22
- 238000003892 spreading Methods 0.000 claims abstract description 22
- 239000000779 smoke Substances 0.000 abstract description 13
- 235000012054 meals Nutrition 0.000 abstract description 12
- 239000007789 gas Substances 0.000 abstract description 11
- 239000000843 powder Substances 0.000 abstract description 9
- 230000001105 regulatory effect Effects 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000000354 decomposition reaction Methods 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 3
- 239000011707 mineral Substances 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- 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
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
本发明公开一种新型水泥回转窑用料幕减排装置，包括由四级旋风筒分离下来的生料通过分料阀将一部分生料送入分解炉，另一部分送入回转窑窑尾烟室形成料幕。所述减排装置将四级旋风筒下来的一部分(5％)生料送至窑尾烟室，通过撒料装置将料均匀撒开，在回转窑的窑尾烟室断面形成料幕。所述撒料装置由进料管与撒料调节板组成，生料粉从进料管进入，通过撒料调节板把生料粉均匀分散、形成料幕。料幕中的生料粉与窑尾废气中的NOx、SOx等有害气体反应，形成水泥熟料矿物进入窑内，可降低窑气中有害气体排放。该装置将四级旋风筒分离下来的一部分生料送入分解炉，另一部分送至窑尾烟室形成料幕，通过生料与NOx、SOx等产生化学反应，减少有害气体排放20％～50％。
The invention discloses a new type of material curtain emission reduction device for cement rotary kiln, which comprises sending a part of the raw meal separated by a four-stage cyclone into the decomposition furnace through a material distribution valve, and sending the other part into the tail smoke chamber of the rotary kiln. Form a curtain. The emission reduction device sends a part (5%) of the raw material from the four-stage cyclone to the kiln tail smoke chamber, spreads the material evenly through the material spreading device, and forms a material curtain on the section of the kiln tail smoke chamber of the rotary kiln. The material spreading device is composed of a feeding pipe and a material spreading regulating plate. The raw material powder enters from the feeding pipe, and the raw material powder is uniformly dispersed through the material spreading regulating plate to form a material curtain. The raw meal powder in the material curtain reacts with NOx, SOx and other harmful gases in the kiln exhaust gas to form cement clinker minerals and enter the kiln, which can reduce the emission of harmful gases in the kiln gas. The device sends part of the raw meal separated by the four-stage cyclone to the decomposition furnace, and the other part is sent to the kiln tail smoke chamber to form a material curtain, and the chemical reaction between the raw meal and NOx, SOx, etc. reduces harmful gas emissions by 20% to 50% %.
Description
技术领域technical field
本发明属于水泥行业减排领域，特别是涉及一种新型水泥回转窑用料幕减排装置。The invention belongs to the field of emission reduction in the cement industry, and in particular relates to a novel material curtain emission reduction device for a cement rotary kiln.
背景技术Background technique
针对目前水泥行业能耗高、废气排放量大等问题，优化水泥回转窑结构设计，采用高新技术实现水泥行业的节能减排，实现工业化生产的环境综合治理、节能减排，符合国家政策发展方向。目前国内水泥行业实现节能减排的途径主要有：余热发电技术、低温余热锅炉技术、固废物回炉再燃烧技术等等，然而这些技术都具有投资大、见效慢等特点，而且减排方面用的脱硫脱硝装置使用成本高，而且催化剂容易中毒，因此寻求一种简单可行，而且有效的减排装置迫在眉睫。In view of the current problems of high energy consumption and large exhaust gas emissions in the cement industry, optimize the structural design of the cement rotary kiln, adopt high-tech to achieve energy conservation and emission reduction in the cement industry, and realize comprehensive environmental management, energy conservation and emission reduction in industrial production, which is in line with the development direction of national policies . At present, the domestic cement industry realizes energy saving and emission reduction mainly through: waste heat power generation technology, low-temperature waste heat boiler technology, solid waste re-burning technology, etc. The cost of desulfurization and denitrification devices is high, and the catalyst is easily poisoned. Therefore, it is urgent to find a simple, feasible and effective emission reduction device.
有鉴于上述现有的水泥回转窑减排方式存在的缺陷，本发明人基于从事此类产品设计制造多年丰富的实务经验及专业知识，并配合学理的运用，积极加以研究创新，以期创设一种新型结构的水泥回转窑用料幕减排装置，能够改进一般现有的水泥回转窑减排方式，使其更具有实用性。经过不断的研究、设计，并经反复试作样品及改进后，终于创设出确具实用价值的本发明。In view of the defects in the above-mentioned existing cement rotary kiln emission reduction methods, the inventors actively research and innovate based on years of rich practical experience and professional knowledge engaged in the design and manufacture of such products, and in conjunction with the application of academic principles, in order to create a The material curtain emission reduction device for cement rotary kiln with a new structure can improve the general existing emission reduction methods of cement rotary kiln and make it more practical. Through continuous research, design, and after repeated trial samples and improvements, the present invention with practical value is finally created.
发明内容Contents of the invention
本发明的目的在于，克服现有的水泥回转窑减排方式存在的缺陷，而提供一种新型结构的水泥回转窑用料幕减排装置，所要解决的技术问题是使其可在回转窑烟室形成料幕，减少有害气体排放量，同时改善水泥熟料性能，从而更加适于实用。The purpose of the present invention is to overcome the defects existing in the existing cement rotary kiln emission reduction methods, and provide a new type of cement rotary kiln material curtain emission reduction device. The chamber forms a material curtain, reduces harmful gas emissions, and at the same time improves the performance of cement clinker, making it more suitable for practical use.
本发明的目的及解决其技术问题是采用以下技术方案来实现。依据本发明提出的一种新型水泥回转窑用料幕减排装置，包括分料阀1、撒料装置2，其中该分料阀1的进口端与四级旋风筒C4的下料管3连接，其出口端分别通过入分解炉下料管4、入撒料装置下料管5与分解炉6、撒料装置2连接，该撒料装置2安设在窑尾烟室7的上部，从而将四级旋风筒C4分离下来的生料通过分料阀1一部分生料送入分解炉6，另一部分送入回转窑8的窑尾烟室7形成料幕。The purpose of the present invention and its technical problem are solved by adopting the following technical solutions. According to the present invention, a new material curtain emission reduction device for cement rotary kiln comprises material distributing valve 1 and material spreading device 2, wherein the inlet end of the material distributing valve 1 is connected with the feeding pipe 3 of the fourth-stage cyclone C4 , the outlet end is respectively connected to the calciner 6 and the spreading device 2 through the lowering pipe 4 of the calciner and the lowering pipe 5 of the spreading device, and the spreading device 2 is installed on the top of the kiln tail smoke chamber 7, thereby Part of the raw meal separated by the four-stage cyclone C4 is sent to the calciner 6 through the material distribution valve 1, and the other part is sent to the kiln tail smoke chamber 7 of the rotary kiln 8 to form a material curtain.
本发明的目的及解决其技术问题还采用以下技术措施来进一步实现。The purpose of the present invention and the solution to its technical problems also adopt the following technical measures to further realize.
前述的料幕减排装置，其中所述的撒料装置2由进料管和撒料调节板组成，该进料管通过入撒料装置下料管5与分料阀1连接。从四级旋风筒C4下来的生料粉从进料管进入撒料装置2，再经由撒料调节板把生料均匀分散，形成料幕。The aforementioned material curtain emission reduction device, wherein the material spreading device 2 is composed of a feeding pipe and a material spreading regulating plate, and the feeding pipe is connected to the material distribution valve 1 through the lower material pipe 5 of the material feeding device. The raw meal powder coming down from the fourth-stage cyclone C4 enters the material spreading device 2 from the feeding pipe, and then the raw material is evenly dispersed through the material spreading regulating plate to form a material curtain.
前述的料幕减排装置，其中所述的下料管3上设置有分料阀门、压力传感器与流量传感器，可以综合控制四级旋风筒C4的下料量。In the aforementioned material curtain emission reduction device, the material feeding pipe 3 is provided with material distributing valves, pressure sensors and flow sensors, which can comprehensively control the feeding volume of the four-stage cyclone C4.
本发明与现有技术相比具有明显的优点和有益效果。借由上述技术方案，本发明一种新型水泥回转窑用料幕减排装置，具有如下有益效果：Compared with the prior art, the present invention has obvious advantages and beneficial effects. By virtue of the above-mentioned technical scheme, a new material curtain emission reduction device for cement rotary kiln in the present invention has the following beneficial effects:
1、该减排装置的结构简单，制造成本相对减少，从而降低企业的投资成本；1. The structure of the emission reduction device is simple, and the manufacturing cost is relatively reduced, thereby reducing the investment cost of the enterprise;
2、该减排装置的效率显著，控制四级旋风筒的料一部分运至分解炉，一部分运至窑尾烟室形成料幕，通过生料粉在高温下与NOx、SOx等产生化学反应，减少有害气体排放20％～50％，以实现减排与改善水泥熟料性能的双重目的。2. The efficiency of the emission reduction device is remarkable. Part of the material controlled by the four-stage cyclone is transported to the decomposition furnace, and the other part is transported to the kiln tail smoke chamber to form a material curtain. The chemical reaction between raw meal powder and NOx, SOx, etc. at high temperature, Reduce harmful gas emissions by 20% to 50%, in order to achieve the dual purpose of reducing emissions and improving the performance of cement clinker.
上述说明仅是本发明技术方案的概述，为了能更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为让本发明的上述和其他目的、特征和优点能够更明显易懂，以下特举较佳实施例，并配合附图，详细说明如下。The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.
附图说明Description of drawings
图1是本发明一种新型水泥回转窑用料幕减排装置的结构示意图。Fig. 1 is a structural schematic diagram of a novel cement rotary kiln material curtain emission reduction device of the present invention.
【主要元件符号说明】[Description of main component symbols]
1：分料阀1: Dosing valve
2：撒料装置2: Spreading device
3：C4下料管3: C4 feeding pipe
4：入分解炉下料管4: into the calciner feeding pipe
5：入撒料装置下料管5: Enter the feeding pipe of the spreading device
6：分解炉6: Decomposition furnace
7：窑尾烟室7: kiln tail smoke chamber
8：回转窑8: Rotary kiln
C4：四级旋风筒C4: four-stage cyclone
C5：五级旋风筒C5: five-stage cyclone
具体实施方式Detailed ways
为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效，以下结合附图及较佳实施例，对依据本发明提出的一种新型水泥回转窑用料幕减排装置其具体实施方式、结构、特征及其功效，详细说明如后。In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation of a new material curtain emission reduction device for cement rotary kiln proposed according to the present invention Mode, structure, feature and effect thereof are as follows in detail.
请参阅图1，本发明一种新型水泥回转窑用料幕减排装置，包括分料阀1、撒料装置2，其中该分料阀1的进口端与四级旋风筒C4的下料管3连接，该分料阀1的出口端分别通过入分解炉下料管4、入撒料装置下料管5与分解炉6、撒料装置2连接，该撒料装置2安设在窑尾烟室7的上部。借由上述方案，本发明提出的减排装置控制四级旋风筒C4的料一部分运至分解炉6，一部分(5％)运至窑尾烟室7，通过撒料装置2在窑尾烟室7的断面形成料幕。Please refer to Fig. 1, a kind of novel material curtain emission reduction device for cement rotary kiln of the present invention, comprises material distributing valve 1, spreading material device 2, wherein the inlet end of this material distributing valve 1 and the discharge pipe of four-stage cyclone C4 3 connection, the outlet end of the distributing valve 1 is respectively connected to the calciner 6 and the distributing device 2 through the feeding pipe 4 of the calciner and the feeding pipe 5 of the distributing device, and the distributing device 2 is installed at the kiln tail The upper part of smoke chamber 7. By means of the above scheme, the emission reduction device proposed by the present invention controls a part of the material of the four-stage cyclone C4 to be transported to the calciner 6, and a part (5%) is transported to the kiln tail smoke chamber 7, and is passed through the material spreading device 2 in the kiln tail smoke chamber. The section of 7 forms material curtain.
具体的，前述的撒料装置2由进料管和撒料调节板组成，该进料管通过入撒料装置下料管5与分料阀1连接。所述四级旋风筒C4的一部分(5％)生料粉流经分料阀1，通过入撒料装置下料管5从撒料装置2的进料管进入，再经由撒料调节板将生料粉均匀地洒出，可形成一个10cm厚的料幕。该料幕与煤粉燃烧过程中产生的NOx、SOx反应，降低20％～50％有害气体的排放。而且料幕可与烟气作用，形成复合矿化剂与水泥熟料的早强矿物，有利于提高水泥性能。Specifically, the aforementioned material spreading device 2 is composed of a feeding pipe and a material spreading regulating plate, and the feeding pipe is connected to the material distributing valve 1 through the feeding pipe 5 of the material feeding device. A part (5%) of the raw meal powder of the four-stage cyclone C4 flows through the distributing valve 1, enters from the feeding pipe of the distributing device 2 through the feeding pipe 5 of the distributing device, and then passes through the distributing regulating plate. The raw material powder is sprinkled evenly to form a 10cm thick material curtain. The material curtain reacts with NOx and SOx produced during the combustion of pulverized coal, reducing the emission of harmful gases by 20% to 50%. Moreover, the material curtain can interact with flue gas to form composite mineralizer and early-strength minerals of cement clinker, which is beneficial to improve the performance of cement.
具体的，前述的下料管3上设置有分料阀门、压力传感器与流量传感器，可以综合控制四级旋风筒C4的下料量。Specifically, the aforementioned feeding pipe 3 is provided with a feeding valve, a pressure sensor and a flow sensor, which can comprehensively control the feeding volume of the four-stage cyclone C4.
下面简介本发明一种新型水泥回转窑用料幕减排装置的工作流程：如图1所示，调节分料阀1，控制四级旋风筒C4下来的一部分生料运至分解炉6，对生料粉进行预分解，另一部分(5％)生料运至窑尾烟室7上方的撒料装置2。该撒料装置2的撒料调节板将下来的生料粉均匀的喷洒开来，形成10cm厚的料幕。五级旋风筒C5下来的料直接进入窑尾烟室7，再进入回转窑8。如上所述形成的料幕可以与煤粉燃烧过程中产生的NOx、SOx等有害气体反应，降低20％～50％有害气体的排放。同时料幕与烟气作用，形成复合矿化剂与水泥熟料早强矿物，可以直接提高水泥的强度。Briefly introduce the working process of a kind of novel cement rotary kiln material curtain emission reduction device of the present invention below: as shown in Figure 1, adjust material distributing valve 1, control a part of raw meal that four-stage cyclone C4 comes down and transport to calciner 6, to The raw meal powder is pre-decomposed, and another part (5%) of the raw meal is transported to the spreading device 2 above the kiln tail smoke chamber 7 . The material spreading regulating plate of this material spreading device 2 evenly sprays the raw meal powder down to form a 10cm thick material curtain. The material from the five-stage cyclone C5 directly enters the kiln tail smoke chamber 7, and then enters the rotary kiln 8. The material curtain formed as above can react with harmful gases such as NOx and SOx produced during the combustion of pulverized coal, reducing the emission of harmful gases by 20% to 50%. At the same time, the material curtain and the flue gas interact to form a composite mineralizer and cement clinker early-strength minerals, which can directly increase the strength of the cement.
以上所述，仅是本发明的较佳实施例而已，并非对本发明做任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所做的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes. Technical Essence of the Invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.
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| CN2319767Y (en) * | 1997-12-16 | 1999-05-19 | 淄博科邦建材技术有限公司 | High temp. waste heat generating kiln with preheater |
| CN201297860Y (en) * | 2007-12-03 | 2009-08-26 | 天津水泥工业设计研究院有限公司 | Device for calcining cement by utilizing acetylene sludge to completely substitute the limestone |
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2015
- 2015-07-01 CN CN201510385483.6A patent/CN105198252B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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