CN105174277A - Waste heat utilization method in wet production process of sodium silicate for quick-setting cement - Google Patents
Waste heat utilization method in wet production process of sodium silicate for quick-setting cement Download PDFInfo
- Publication number
- CN105174277A CN105174277A CN201510574543.9A CN201510574543A CN105174277A CN 105174277 A CN105174277 A CN 105174277A CN 201510574543 A CN201510574543 A CN 201510574543A CN 105174277 A CN105174277 A CN 105174277A
- Authority
- CN
- China
- Prior art keywords
- sodium silicate
- reactor
- heat utilization
- utilization method
- reaction kettle
- 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
Links
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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention provides a waste heat utilization method in a wet production process of sodium silicate for quick-setting cement. The method comprises the following steps: conveying sodium hydroxide to a material mixing tank through a metering system, conveying solid quartz sand to the material mixing tank through a belt conveyor, overdosing the quartz sand by 30 percent in a mixing process, heating the quartz sand by steam to the temperature of 65 DEG C, and performing stirring mixing in the material mixing tank to obtain slurry; conveying the mixed slurry to a reaction kettle through a sand pump, heating the slurry by using steam of which the pressure is 0.65Mpa, performing a reaction at the temperature of 165 DEG C, after the reaction is performed for 7h, relieving the pressure of the reaction kettle to 0.3Mpa, quickly settling a material in the reaction kettle by the auto-rotation of the reaction kettle around a central shaft thereof serving as the center, performing standing and natural settling for 1.5h after the reaction kettle auto-rotates for 2h to separate the sodium silicate from a suspended solid, conveying the sodium silicate into a finished product tank through a pump, and discharging a settlement object settled in the reaction kettle to a re-mixing system. According to the waste heat utilization method in the wet production process of the sodium silicate for the quick-setting cement, waste gas is recycled; the settlement time is shortened, and energy consumption can be reduced by 25 percent; the production efficiency is improved; solid waste is recycled by utilizing the re-mixing system, and the utilization rate of raw materials is high.
Description
Technical field
The present invention relates to sodium silicate production technical field, particularly relate to residual-heat utilization method in a kind of rapid hardening cement sodium silicate wet process technique.
Background technology
Sodium silicate production process can be divided into dry method and wet method two kinds, usually the dry production solid sodium silicate that uses, then becomes the liquid sodium silicate of required specification through dissolution transitions, and its turnover ratio is 1: 2.5.The raw material of production sodium silicate is quartz sand, soda ash, the two is mixed by a certain percentage and delivers in reflecting kiln, and after the shrend of high-temperature calcination melting furnace, packaging is solid sodium silicate.Solid sodium silicate is conducive to transport, storage.Solid sodium silicate is dissolved under certain temperature, pressure liquid and be liquid sodium silicate.
Conventional wet sodium silicate production process energy consumption is large, invests high, complicated operation, higher to the skill set requirements of personnel.。
Summary of the invention
The object of the present invention is to provide residual-heat utilization method in a kind of rapid hardening cement sodium silicate wet process technique, to solve the problems of the technologies described above.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of rapid hardening cement residual-heat utilization method in sodium silicate wet process technique, it is characterized in that: liquid caustic soda is delivered to material-compound tank through metering system, solid quartz sand is delivered to material-compound tank through rotary conveyor, quartz sand excessive 30% in layoutprocedure, with being steam heated to 65 DEG C, stirring in material-compound tank and being configured to slurry; The slurry configured is transported to reactor through sand pump, directly by the steam heating of 0.65Mpa, temperature of reaction 165 DEG C, reacted after 7 hours, reactor pressure release is to 0.3Mpa, reactor rotation centered by its central shaft, makes material in reactor rapid subsidence, and rotation is after 2 hours, leave standstill natural subsidence 1.5 hours again, sodium silicate is separated with suspended solid, and sodium silicate is through pump delivery in finished pot, and the sediment settled down in reactor is disposed to back match system; Sodium silicate is delivered in the process of finished pot and after entering finished pot, and use recirculated water to cool fast, recirculated water is by the preheating for other operation after heating.
Reactor pressure release is in the step of 0.3Mpa, and the steam of discharging from reactor is for heating other reactor and material.
In reactor rotation process, rotational velocity adopts the mode alternately occurred of accelerating and slow down, and the maximum value of rotational velocity is 120r/min, and the minimum value of rotational velocity is 25r/min, accelerates to be 5s with the time of moderating process.This sedimentation method, sodium silicate and suspended solid sharp separation can be made, traditional natural settling process, all from reactor from being discharged to slurry tank by mixture, after a sedimentation and secondary settlement, sub-argument goes out sodium silicate, the time of a sedimentation is greatly about 2 hours, the time of secondary settlement is greatly about 36 hours, and the sedimentation method provided in the present invention directly carries out in a kettle., the cooperation of the quick rotation of reactor and deceleration rotation is adopted to make sodium silicate and suspended solid sharp separation, substantially reduce the settling time, improve production efficiency.
The component content of described quartz sand is: SiO
2content (butt) 99.3%, Fe
2o
3content (butt) 0.15%, Al
2o
3content (butt) 0.55%.
The invention has the beneficial effects as follows:
The present invention is by waste gas reuse, shortening settling time, and can reduce energy consumption more than 25%, production efficiency is improved, and utilizes back match system to carry out reuse to solid waste, raw material availability Gao Mei.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, set forth the present invention further, but following embodiment being only the preferred embodiments of the present invention, and not all.Based on the embodiment in embodiment, those skilled in the art under the prerequisite not making creative work obtain other embodiment, all belong to protection scope of the present invention.
A kind of rapid hardening cement residual-heat utilization method in sodium silicate wet process technique, liquid caustic soda is delivered to material-compound tank through metering system, and solid quartz sand is delivered to material-compound tank through rotary conveyor, quartz sand excessive 30% in layoutprocedure, with being steam heated to 65 DEG C, stirring in material-compound tank and being configured to slurry; The slurry configured is transported to reactor through sand pump, directly by the steam heating of 0.65Mpa, temperature of reaction 165 DEG C, reacted after 7 hours, reactor pressure release is to 0.3Mpa, reactor rotation centered by its central shaft, makes material in reactor rapid subsidence, and rotation is after 2 hours, leave standstill natural subsidence 1.5 hours again, sodium silicate is separated with suspended solid, and sodium silicate is through pump delivery in finished pot, and the sediment settled down in reactor is disposed to back match system;
In reactor rotation process, rotational velocity adopts the mode alternately occurred of accelerating and slow down, and the maximum value of rotational velocity is 120r/min, and the minimum value of rotational velocity is 25r/min, accelerates to be 5s with the time of moderating process;
The component content of quartz sand is: SiO
2content (butt) 99.3%, Fe
2o
3content (butt) 0.15%, Al
2o
3content (butt) 0.55%, water ratio is less than 15%.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets is only preference of the present invention; be not used for limiting the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. rapid hardening cement residual-heat utilization method in sodium silicate wet process technique, it is characterized in that: liquid caustic soda is delivered to material-compound tank through metering system, solid quartz sand is delivered to material-compound tank through rotary conveyor, quartz sand excessive 30% in layoutprocedure, with being steam heated to 65 DEG C, stirring in material-compound tank and being configured to slurry; The slurry configured is transported to reactor through sand pump, directly by the steam heating of 0.65Mpa, temperature of reaction 165 DEG C, reacted after 7 hours, reactor pressure release is to 0.3Mpa, reactor rotation centered by its central shaft, makes material in reactor rapid subsidence, and rotation is after 2 hours, leave standstill natural subsidence 1.5 hours again, sodium silicate is separated with suspended solid, and sodium silicate is through pump delivery in finished pot, and the sediment settled down in reactor is disposed to back match system; Sodium silicate is delivered in the process of finished pot and after entering finished pot, and use recirculated water to cool fast, recirculated water is by the preheating for other operation after heating.
2. residual-heat utilization method in rapid hardening cement sodium silicate wet process technique according to claim 1, is characterized in that: reactor pressure release is in the step of 0.3Mpa, and the steam of discharging from reactor is for heating other reactor and material.
3. residual-heat utilization method in rapid hardening cement sodium silicate wet process technique according to claim 1, it is characterized in that: in reactor rotation process, rotational velocity adopts the mode alternately occurred of accelerating and slow down, the maximum value of rotational velocity is 120r/min, the minimum value of rotational velocity is 25r/min, accelerates to be 5s with the time of moderating process.
4. residual-heat utilization method in rapid hardening cement sodium silicate wet process technique according to claim 1, is characterized in that: the component content of described quartz sand is: SiO
2content (butt) 99.3%, Fe
2o
3content (butt) 0.15%, Al
2o
3content (butt) 0.55%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510574543.9A CN105174277A (en) | 2015-09-10 | 2015-09-10 | Waste heat utilization method in wet production process of sodium silicate for quick-setting cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510574543.9A CN105174277A (en) | 2015-09-10 | 2015-09-10 | Waste heat utilization method in wet production process of sodium silicate for quick-setting cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105174277A true CN105174277A (en) | 2015-12-23 |
Family
ID=54896818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510574543.9A Pending CN105174277A (en) | 2015-09-10 | 2015-09-10 | Waste heat utilization method in wet production process of sodium silicate for quick-setting cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105174277A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508442A (en) * | 2009-03-31 | 2009-08-19 | 洛阳豫燃煤气设备有限公司 | Pre-heating heat-exchanging direct dissolution type sodium silicate production process and apparatus |
| CN202893211U (en) * | 2012-11-09 | 2013-04-24 | 福建海能新材料有限公司 | Water glass dissolving waste heat recovery device |
| CN203577806U (en) * | 2013-11-12 | 2014-05-07 | 重庆德蒙特科技发展有限公司 | Drum-type reaction kettle |
| CN104118880A (en) * | 2014-07-02 | 2014-10-29 | 广州立白企业集团有限公司 | Automatic blending process and equipment for wet-method sodium metasilicate production |
-
2015
- 2015-09-10 CN CN201510574543.9A patent/CN105174277A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508442A (en) * | 2009-03-31 | 2009-08-19 | 洛阳豫燃煤气设备有限公司 | Pre-heating heat-exchanging direct dissolution type sodium silicate production process and apparatus |
| CN202893211U (en) * | 2012-11-09 | 2013-04-24 | 福建海能新材料有限公司 | Water glass dissolving waste heat recovery device |
| CN203577806U (en) * | 2013-11-12 | 2014-05-07 | 重庆德蒙特科技发展有限公司 | Drum-type reaction kettle |
| CN104118880A (en) * | 2014-07-02 | 2014-10-29 | 广州立白企业集团有限公司 | Automatic blending process and equipment for wet-method sodium metasilicate production |
Non-Patent Citations (2)
| Title |
|---|
| 向小军: "湿法泡花碱工艺优化", 《广东化工》 * |
| 李洁: "提高沉降槽效率的方法及实践", 《有色设备》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110745854B (en) | Method for directly preparing alpha-semi-hydrated gypsum by using industrial waste acid | |
| CN104355573B (en) | Total utilization of PCA process | |
| WO2018233688A1 (en) | Method for preparing aluminum hydroxide by treating medium- and low-grade bauxite by using one-step alkali heat process of andradite | |
| WO2018233687A1 (en) | Method for producing sodium aluminate from medium and low-grade bauxite by one-step alkali thermal treatment through andradite | |
| CN106566925A (en) | Method for achieving acid mixing, curing and leaching of vanadium through stone coal vanadium ore | |
| CN105483816A (en) | Method for preparing calcium sulfate whiskers from acetylene sludge and waste sulfuric acid | |
| CN114084903A (en) | Continuous acidolysis method for titanium concentrate | |
| CN101538058B (en) | Low-temperature low-pressure hydro chemical method for recovering aluminum oxide and sodium oxide from red mud | |
| CN105174277A (en) | Waste heat utilization method in wet production process of sodium silicate for quick-setting cement | |
| CN107827131A (en) | A kind of method of alumina producing Bayer process | |
| CN104030585A (en) | Method for preparing cement clinker by utilizing sludge | |
| CN210385529U (en) | Device for improving emulsification effect of steel slag desulfurizer pulping slurry | |
| CN105236435A (en) | Wet production process of sodium silicate for fast-drying cement | |
| CN105197950A (en) | Use method of waste heat of finished product in wet production process of sodium silicate for detergents | |
| CN103773587A (en) | On-line silicon wafer cutting mortar recycling method and device | |
| CN105152179A (en) | Method for utilizing waste heat in wet process production of sodium metasilicate for quick-setting cement | |
| CN106431176A (en) | Method for producing autoclaved brick from foundry waste sand and acetylene sludge | |
| CN105236436A (en) | Wet production process of sodium silicate for washing powder | |
| CN201678463U (en) | Fly ash slurry mixed heating acid-method dissolution device | |
| CN114197028A (en) | Continuous preparation method of calcium sulfate whiskers | |
| CN102030349B (en) | Method for extracting magnesium hydroxide by using boric sludge and treating dye wastewater | |
| CN102284345B (en) | Separation method of main impure minerals of low-grade boron rock by utilizing cyclone separator | |
| CN116749348B (en) | Concrete mixing plant CO 2 System and method for sealing and utilizing | |
| CN218709233U (en) | Extraction system for extracting elements from fly ash | |
| CN110668455A (en) | Production method of refined liquid sodium silicate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151223 |
|
| WD01 | Invention patent application deemed withdrawn after publication |