RU2166160C1 - Method for roasting of carbonate raw material in tubular rotary kiln - Google Patents
Method for roasting of carbonate raw material in tubular rotary kiln Download PDFInfo
- Publication number
- RU2166160C1 RU2166160C1 RU99118923/03A RU99118923A RU2166160C1 RU 2166160 C1 RU2166160 C1 RU 2166160C1 RU 99118923/03 A RU99118923/03 A RU 99118923/03A RU 99118923 A RU99118923 A RU 99118923A RU 2166160 C1 RU2166160 C1 RU 2166160C1
- Authority
- RU
- Russia
- Prior art keywords
- coke
- roasting
- dust
- raw material
- rotary kiln
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims description 3
- 239000002994 raw material Substances 0.000 title claims description 3
- 239000000571 coke Substances 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003345 natural gas Substances 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 238000010791 quenching Methods 0.000 claims abstract description 3
- 230000000171 quenching effect Effects 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 7
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 7
- 239000004571 lime Substances 0.000 abstract description 7
- 239000004568 cement Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Изобретение относится к области производства строительных материалов, а именно к производству цементов, извести. The invention relates to the production of building materials, namely the production of cements, lime.
Известен способ обжига извести с применением пылеугольного топлива, что приводило к образованию настылей в виде трудноразрушимых колец и ухудшению качества извести (А.В. Монастырев, А.В. Александров. Печи для производства извести, Металлургия, 1979, с. 177-178). There is a method of calcining lime using pulverized coal, which led to the formation of deposits in the form of intractable rings and a deterioration in the quality of lime (A.V. Monastyrev, A.V. Aleksandrov. Lime kilns, Metallurgy, 1979, pp. 177-178) .
Недостатком данного способа является необходимость дополнительных затрат на получение пылеугольного топлива. The disadvantage of this method is the need for additional costs for obtaining pulverized coal fuel.
Наиболее близким аналогом к заявляемому способу является способ обжига клинкера во вращающихся печах с применением смеси измельченного кокса и природного газа (Р. И. Цементная и асбоцементная промышленность. ст. Перевод цементных печей на смешанное топливо. R. L. Brust. Flexible kiln firing system zaver on gas. "Pit and Quarry", 1978, N 8, 76, 79 (США). The closest analogue to the claimed method is a method of burning clinker in rotary kilns using a mixture of crushed coke and natural gas (R.I. Cement and asbestos cement industry. Art. Transfer of cement kilns to mixed fuel. RL Brust. Flexible kiln firing system zaver on gas . "Pit and Quarry", 1978, N 8, 76, 79 (USA).
Недостатком данного способа является необходимость дополнительных затрат на дробление и измельчение кокса. The disadvantage of this method is the need for additional costs for crushing and grinding of coke.
Предлагаемый способ позволит утилизировать отходы, экономить природный газ и повысить качество готового продукта. The proposed method will allow to utilize waste, save natural gas and improve the quality of the finished product.
Положительный результат достигается за счет того, что в способе обжига карбонатного сырья во вращающихся трубчатых печах, заключающемся в использовании в качестве топлива смеси природного газа и измельченного кокса, которые предварительно дозируют, в газовый факел сжатым воздухом вдувают коксовую пыль системы аспирации установки сухого тушения кокса крупностью до 1,5 мм. A positive result is achieved due to the fact that in the method of calcining carbonate raw materials in rotary tube furnaces, which consists in using a mixture of natural gas and crushed coke as a fuel, which are pre-metered, coke dust is blown with compressed air into the gas flare of the aspiration system of the dry coke quenching unit with a particle size up to 1.5 mm.
Куски крупностью 1,5 мм отсеиваются, т.к. небольшое их количество не успевает сгорать и засоряет готовый продукт. Pieces with a particle size of 1.5 mm are sifted out, because a small number of them do not have time to burn and clog the finished product.
Предлагаемое техническое решение позволит без затрат на дробление и измельчение заменить часть природного газа коксовой пылью, утилизировать отходы. The proposed technical solution will allow, without the cost of crushing and grinding, to replace part of the natural gas with coke dust, to utilize waste.
Сущность изобретения поясняется чертежом, где изображена технологическая линия подачи коксовой пыли в печь. The invention is illustrated by the drawing, which shows the technological line for supplying coke dust to the furnace.
Технологическая линия подачи коксовой пыли включает вращающуюся печь 1, ленточный дозатор известняка 2, пылевую камеру 3, газоход 4, откатную головку печи 5, охладитель извести 6, вентилятор воздуха 7, горелку 8, трубу подачи коксовой пыли 9, бункер коксовой пыли 10, шлюзовый дозатор пыли 11, трубопровод сжатого воздуха 12, сетки для удаления из пыли крупных кусков и мусора 13. The coke dust supply line includes a rotary kiln 1, limestone belt dispenser 2, a dust chamber 3, a gas duct 4, a furnace head 5, a lime cooler 6, an air fan 7, a burner 8, a coke dust supply pipe 9, a coke dust bin 10, a lock a dust dispenser 11, a compressed air pipe 12, nets for removing large pieces and debris 13 from dust.
Пример реализации способа
Обжиг известняка крупностью 20 - 40 мм производится во вращающихся печах 1 длиной 75 м, диаметром 3,5 м, природный газ подается в печь 1 через горелку ГВП 8, воздух на горение поступает из охладителя извести 6. Коксовая пыль находится в бункере 10, верх которого покрыт сеткой 13 для удаления из пыли крупных кусков и инородных тел, внизу емкости имеется шлюзовый дозатор пыли 11. Пыль подается в бункер коксовой пыли 10 автоцементовозом. Коксовая пыль после дозировки подается сжатым воздухом по трубопроводу 12 в факел природного газа.An example implementation of the method
Limestone firing with a particle size of 20–40 mm is carried out in rotary kilns 1, length 75 m, diameter 3.5 m, natural gas is supplied to furnace 1 through a GWP 8 burner, combustion air is supplied from lime cooler 6. Coke dust is located in hopper 10, top which is covered with a mesh 13 to remove large pieces and foreign bodies from dust, at the bottom of the tank there is a dust gateway batcher 11. The dust is fed into the coke dust bin 10 by a cement truck. After dosing, coke dust is supplied by compressed air through line 12 to a natural gas flare.
Результаты эксперимента приведены в таблице. The experimental results are shown in the table.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU99118923/03A RU2166160C1 (en) | 1999-08-30 | 1999-08-30 | Method for roasting of carbonate raw material in tubular rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU99118923/03A RU2166160C1 (en) | 1999-08-30 | 1999-08-30 | Method for roasting of carbonate raw material in tubular rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2166160C1 true RU2166160C1 (en) | 2001-04-27 |
Family
ID=20224557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU99118923/03A RU2166160C1 (en) | 1999-08-30 | 1999-08-30 | Method for roasting of carbonate raw material in tubular rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2166160C1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2707036C1 (en) * | 2014-02-28 | 2019-11-21 | Л'Эр Ликид, Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод | Operation of rotary furnace for production of hydraulic binder |
| RU2772158C2 (en) * | 2017-09-27 | 2022-05-18 | Андритц Инк. | Method and system for reducing ring formation in lime kilns |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU12278A1 (en) * | 1927-11-19 | 1929-12-31 | А.К. Сильницкий | Method of separating dust and tar from dry distillation gases |
| GB1161327A (en) * | 1965-10-19 | 1969-08-13 | Strategic Patents Ltd | Rotary Kilns and the Operation thereof |
-
1999
- 1999-08-30 RU RU99118923/03A patent/RU2166160C1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU12278A1 (en) * | 1927-11-19 | 1929-12-31 | А.К. Сильницкий | Method of separating dust and tar from dry distillation gases |
| GB1161327A (en) * | 1965-10-19 | 1969-08-13 | Strategic Patents Ltd | Rotary Kilns and the Operation thereof |
Non-Patent Citations (1)
| Title |
|---|
| R.L.BRUST, FLEXIBLE KILN FIRING SISTEM SAVES ON GAS, "Pitand Quarry", US, 1978, N 8, c. 76-79. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2707036C1 (en) * | 2014-02-28 | 2019-11-21 | Л'Эр Ликид, Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод | Operation of rotary furnace for production of hydraulic binder |
| RU2772158C2 (en) * | 2017-09-27 | 2022-05-18 | Андритц Инк. | Method and system for reducing ring formation in lime kilns |
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| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20020831 |