CN105236436A - Wet production process of sodium silicate for washing powder - Google Patents
Wet production process of sodium silicate for washing powder Download PDFInfo
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- CN105236436A CN105236436A CN201510578160.9A CN201510578160A CN105236436A CN 105236436 A CN105236436 A CN 105236436A CN 201510578160 A CN201510578160 A CN 201510578160A CN 105236436 A CN105236436 A CN 105236436A
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- sodium silicate
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- settlement
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Abstract
The present invention provides a wet production process of sodium silicate for washing powder, and relates to the technical field of sodium silicate production. The process comprises: conveying a caustic soda liquid to a material preparing tank through a metering system, and conveying solid quartz sand to the material preparing tank through a belt conveyor, wherein the excess amount of the quartz sand during the preparing process is 30%; heating with steam to a temperature of 65 DEG C, and stirring in the material preparing tank to prepare a slurry; and conveying the prepared slurry to a reaction kettle through a sand pump, directly heating with 0.65 Mpa steam, carrying out a reaction for 7 h at a temperature of 165 DEG C, relieving the pressure of the reaction kettle to 0.3 Mpa, conveying the material in the reaction kettle to a primary settlement tank through a buffer device, settling for 2 h, beating the upper layer liquid into a secondary settlement tank through a pump, carrying out secondary settlement for 12 h, separating the sodium silicate and the suspended solids, conveying the sodium silicate to a finished product tank through a pump, and discharging the settlement product from the primary settlement and the secondary settlement to a re-preparing system. According to the present invention, the waste gas is reuse, the settling time is shortened, the energy consumption can be reduced by more than or equal to 25%, the production efficiency can be improved, the solid waste is reused by using the re-preparing system, and the raw material utilization rate is high.
Description
Technical field
The present invention relates to sodium silicate production technical field, particularly relate to a kind of washing powder wet method sodium silicate production process.
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 a kind of washing powder wet method sodium silicate production process, 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 washing powder wet method sodium silicate production process, 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, material in reactor delivers to a slurry tank through snubber, sedimentation 2 hours, and supernatant liquid squeezes into secondary settlement tank through pump, through the secondary settlement of 12 hours, sodium silicate is separated with suspended solid, and sodium silicate is through pump delivery in finished pot, and once, the sediment that gets off of secondary settlement is disposed to back match system.
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 the process of described secondary settlement, secondary settlement tank rotates centered by tank body axle center, and speed of rotation adopts the mode alternately occurred of accelerating and slow down, and the maximum value of speed of rotation is 120r/min, the minimum value of speed of rotation is 25r/min, accelerates to be 5s with the time of moderating process.This sedimentation method, can make sodium silicate and suspended solid sharp separation, and the time of traditional natural secondary settlement is greatly about 36 hours, and the secondary settlement method provided in the present invention, can the secondary settlement time to 12 hour be shortened, substantially reduce the secondary settlement 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 washing powder wet method sodium silicate production process, 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, material in reactor delivers to a slurry tank through snubber, sedimentation 2 hours, and supernatant liquid squeezes into secondary settlement tank through pump, through the secondary settlement of 12 hours, sodium silicate is separated with suspended solid, and sodium silicate is through pump delivery in finished pot, and once, the sediment that gets off of secondary settlement is disposed to back match system;
In the process of secondary settlement, secondary settlement tank rotates centered by tank body axle center, and speed of rotation adopts the mode alternately occurred of accelerating and slow down, and the maximum value of speed of rotation is 120r/min, the minimum value of speed of rotation 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. a washing powder wet method sodium silicate production process, 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, material in reactor delivers to a slurry tank through snubber, sedimentation 2 hours, and supernatant liquid squeezes into secondary settlement tank through pump, through the secondary settlement of 12 hours, sodium silicate is separated with suspended solid, and sodium silicate is through pump delivery in finished pot, and once, the sediment that gets off of secondary settlement is disposed to back match system.
2. washing powder wet method sodium silicate production process 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. washing powder wet method sodium silicate production process according to claim 1, it is characterized in that: in the process of described secondary settlement, secondary settlement tank rotates centered by tank body axle center, speed of rotation adopts the mode alternately occurred of accelerating and slow down, the maximum value of speed of rotation is 120r/min, the minimum value of speed of rotation is 25r/min, accelerates to be 5s with the time of moderating process.
4. washing powder wet method sodium silicate production process 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 |
|---|---|---|---|
| CN201510578160.9A CN105236436A (en) | 2015-09-10 | 2015-09-10 | Wet production process of sodium silicate for washing powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510578160.9A CN105236436A (en) | 2015-09-10 | 2015-09-10 | Wet production process of sodium silicate for washing powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105236436A true CN105236436A (en) | 2016-01-13 |
Family
ID=55034327
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510578160.9A Pending CN105236436A (en) | 2015-09-10 | 2015-09-10 | Wet production process of sodium silicate for washing powder |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764624A (en) * | 2012-08-08 | 2012-11-07 | 确成硅化学股份有限公司 | Precipitation reactor for producing silica |
| 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 |
| CN104843725A (en) * | 2015-05-27 | 2015-08-19 | 青岛东岳泡花碱有限公司 | Process and equipment for producing sodium silicate by using liquid-phase method |
-
2015
- 2015-09-10 CN CN201510578160.9A patent/CN105236436A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764624A (en) * | 2012-08-08 | 2012-11-07 | 确成硅化学股份有限公司 | Precipitation reactor for producing silica |
| 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 |
| CN104843725A (en) * | 2015-05-27 | 2015-08-19 | 青岛东岳泡花碱有限公司 | Process and equipment for producing sodium silicate by using liquid-phase method |
Non-Patent Citations (2)
| Title |
|---|
| 向小军: "湿法泡花碱工艺优化", 《广东化工》 * |
| 胡金榜等: "离心沉降法在硅酸钠澄清工艺中的新应用", 《天津化工》 * |
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Application publication date: 20160113 |