CN101913898A - Process for manufacturing water treatment ceramsite filter by waste gypsum generated in acesulfame potassium production - Google Patents
Process for manufacturing water treatment ceramsite filter by waste gypsum generated in acesulfame potassium production Download PDFInfo
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- CN101913898A CN101913898A CN 201010224088 CN201010224088A CN101913898A CN 101913898 A CN101913898 A CN 101913898A CN 201010224088 CN201010224088 CN 201010224088 CN 201010224088 A CN201010224088 A CN 201010224088A CN 101913898 A CN101913898 A CN 101913898A
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- acesulfame potassium
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Abstract
The invention relates to a process for manufacturing a water treatment ceramsite filter by waste gypsum generated in acesulfame potassium production, which is characterized by comprising the following steps: a) pre-treatment: cleaning, drying and dewatering the waste gypsum generated in the acesulfame potassium production; b) mixing and homogenizing: mixing the treated waste gypsum with flyash and biological sludge to serve as a base stock, wherein base stock comprises 40-60% of waste gypsum by mass, 20-35% of flyash by mass and 5-20% of biological sludge by mass; and adding 8-15% of clay by mass and 1-12% of pore-forming material by mass, and evenly mixing; c) pelletizing; d) expanding; and e) screening: crushing the expanded product into the ceramic product with the particle size of 3-15mm, namely obtaining the product in the invention. The ceramic filter obtained in the invention can be suitable for enterprises needing water treatment like sewage treatment plants and the like.
Description
Technical field
The present invention relates to the engineering of water treatment field, refer more particularly to a kind of production technique of making water treatment ceramsite filter.
Background technology
At present, common fast worry pond, BAF are used in the water treatment very extensive at home, and filtrate is the key and the core integral part of its technology, and it is handled effect directly influence.Present stage, filtrate commonly used mainly contains quartz sand, slag, zeolite, coke, light ceramic and plastic grain etc.Wherein, the big general granularity of proportion granule filter material is little, specific surface area and porosity are all little, thereby its filter material layer biomass resistance less, filter material layer is bigger, and operating load is difficult for too high; Though the light plastic filtrate has a series of good features, its intensity is low, should not wash, wetting ability difference and cost are higher.
In acesulfame potassium (being commonly called as acesulfame potassium) production process,,, in the process of recycling triethylamine, can produce waste gypsum again with calcium carbonate reaction with producing excess sulfuric acid after the sulphur trioxide hydrolysis.This kind waste gypsum is compared with common phosphogypsum with the plaster of paris, and not containing water-soluble phosphoric acid salt, fluorochemical etc. influences the material that it utilizes performance.From the acesulfame potassium Production Flow Chart, waste gypsum may contain the impurity of trace, though can all remove by washing, calcination processing technology, the not only a large amount of land occupations of long-term stacking, and cause environmental pollution easily.
Summary of the invention
Technical problem to be solved by this invention is: a kind of excellent characteristic that has is provided, and cost is lower, and can solve the technology of utilizing the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production of the problem of environmental pollution of waste gypsum in the acesulfame potassium production simultaneously.
For addressing the above problem, the technical solution used in the present invention is: utilize the technology of the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production, comprise the steps:
A), pre-treatment: the waste gypsum during acesulfame potassium produced clean drying and dewatering to water ratio less than 5%;
B), mix even matter: get above-mentioned pretreated waste gypsum and mix the back with flyash and biological sludge as base-material, wherein the mass percent of waste gypsum is 40～60%, the mass percent of flyash is 20～35%, the mass percent of biological sludge is 5～20%, mix after in base-material, adding clay and pore-forming material, the mass percent of its medium clay soil is 8～15%, and the mass percent of pore-forming material is 1～12%;
C), granulation: above-mentioned mixed raw material is added granulation balling-up in the tablets press;
D), burning expands: above-mentioned spherolite is placed sintering pore-creating in the kiln;
E), screening: the product that will burn after expanding is broken into the ceramic product that particle diameter is 3～15mm, is finished product.
In the described pretreatment process, also comprise: with biological sludge oven dry or natural air drying to water ratio less than 10%; Flyash and clay separated pulverizing are ground to greater than 325 orders.
Described pore-forming material is carbon dust, wood charcoal powder or poly-molysite.
In the described granulating working procedure, after the granulation balling-up, sieve and remove the powder of particle diameter below 0.8mm.
In the bloated operation of described burning, spherolite is placed in the kiln, earlier at 250 ℃ of insulation oven dry 18～22min, be warming up to 1000～1150 ℃ then, sintering pore-creating, burning the time of expanding is 20～30min, burn to expand and to finish the back and be incubated 8～12min, then in kiln internal cooling to 500～600 ℃, naturally cooling behind the kiln discharge.
The invention has the beneficial effects as follows: the water treatment ceramsite filter of gained of the present invention not only has characteristics such as corrosion-resistant, anti-oxidant, nontoxicity, hardness height, and bigger porosity and huge specific surface area arranged, microorganism is easy to biofilm, help holding back with planar water in impurity.Solve the problem of environmental pollution of waste gypsum in the acesulfame potassium production simultaneously.
Embodiment
Utilize the technology of the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production to be described in further detail to the present invention below.
Embodiment 1
Utilize the technology of the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production, comprise the steps:
A), pre-treatment: waste gypsum in the acesulfame potassium production is mixed with water, stir 30min, after the dissolving of band soluble impurity, separate with the precipitator method or whizzer, solution is discharged to waste water processing station and handles, calcium plaster under 150 ℃ temperature, carry out baking dehydration to water ratio less than 5%; With biological sludge oven dry or natural air drying to water ratio less than 10%; Flyash and clay separated pulverizing are ground to greater than 325 orders;
B), mix even matter: get above-mentioned pretreated waste gypsum and mix the back with flyash and biological sludge as base-material, wherein the mass percent of waste gypsum is 40%, the mass percent of flyash is 20%, the mass percent of biological sludge is 20%, mix after in base-material, adding clay and carbon dust, the mass percent of its medium clay soil is 10%, and the mass percent of carbon dust is 10%;
C), granulation: above-mentioned mixed raw material is added in the pan-pelletizer of pan-type pelletizer, and rolling balling in pan-pelletizer sieves and removes the powder of particle diameter below 0.8mm, and material residence time in tablets press is 40min;
D), burn to expand: above-mentioned spherolite is placed roasting in the kiln, at 250 ℃ of insulation oven dry 18min, is warming up to 1000 ℃ then earlier, sintering pore-creating, burning the time of expanding is 30min, burning expands finishes the back and is incubated 12min, then at kiln internal cooling to 500 ℃, naturally cooling behind the kiln discharge;
E), screening: the product that will burn after expanding with crusher is broken into the ceramic product that particle diameter is 3～15mm, is finished product.
Embodiment 2
Utilize the technology of the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production, comprise the steps:
A), pre-treatment: waste gypsum in the acesulfame potassium production is mixed with water, stir 30min, after the dissolving of band soluble impurity, separate with the precipitator method or whizzer, solution is discharged to waste water processing station and handles, calcium plaster under 150 ℃ temperature, carry out baking dehydration to water ratio less than 5%; With biological sludge oven dry or natural air drying to water ratio less than 10%; Flyash and clay separated pulverizing are ground to greater than 325 orders;
B), mix even matter: get above-mentioned pretreated waste gypsum and mix the back with flyash and biological sludge as base-material, wherein the mass percent of waste gypsum is 50%, the mass percent of flyash is 35%, the mass percent of biological sludge is 5%, mix after in base-material, adding clay and wood charcoal powder, the mass percent of its medium clay soil is 8%, and the mass percent of wood charcoal powder is 2%;
C), granulation: above-mentioned mixed raw material is added in the pan-pelletizer of pan-type pelletizer, and rolling balling in pan-pelletizer sieves and removes the powder of particle diameter below 0.8mm, and material residence time in tablets press is 40min;
D), burn to expand: above-mentioned spherolite is placed roasting in the kiln, at 250 ℃ of insulation oven dry 22min, is warming up to 1150 ℃ then earlier, sintering pore-creating, burning the time of expanding is 20min, burning expands finishes the back and is incubated 8min, then at kiln internal cooling to 600 ℃, naturally cooling behind the kiln discharge;
E), screening: the product that will burn after expanding with crusher is broken into the ceramic product that particle diameter is 3～15mm, is finished product.
Embodiment 3
Utilize the technology of the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production, comprise the steps:
A), pre-treatment: waste gypsum in the acesulfame potassium production is mixed with water, stir 30min, after the dissolving of band soluble impurity, separate with the precipitator method or whizzer, solution is discharged to waste water processing station and handles, calcium plaster under 150 ℃ temperature, carry out baking dehydration to water ratio less than 5%; With biological sludge oven dry or natural air drying to water ratio less than 10%; Flyash and clay separated pulverizing are ground to greater than 325 orders;
B), mix even matter: get above-mentioned pretreated waste gypsum and mix the back with flyash and biological sludge as base-material, wherein the mass percent of waste gypsum is 50%, the mass percent of flyash is 30%, the mass percent of biological sludge is 8%, mix after in base-material, adding clay and poly-molysite, the mass percent of its medium clay soil is 9%, and the mass percent of poly-molysite is 3%;
C), granulation: above-mentioned mixed raw material is added in the pan-pelletizer of pan-type pelletizer, and rolling balling in pan-pelletizer sieves and removes the powder of particle diameter below 0.8mm, and material residence time in tablets press is 40min;
D), burn to expand: above-mentioned spherolite is placed roasting in the kiln, at 250 ℃ of insulation oven dry 20min, is warming up to 1100 ℃ then earlier, sintering pore-creating, burning the time of expanding is 25min, burning expands finishes the back and is incubated 10min, then at kiln internal cooling to 550 ℃, naturally cooling behind the kiln discharge;
E), screening: the product that will burn after expanding with crusher is broken into the ceramic product that particle diameter is 3～15mm, is finished product.
Claims (5)
1. utilize the technology of the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production, it is characterized in that: comprise the steps:
A), pre-treatment: during acesulfame potassium produced waste gypsum clean drying and dewatering to water ratio less than 5%;
B), mix even matter: get above-mentioned pretreated waste gypsum and mix the back with flyash and biological sludge as base-material, wherein the mass percent of waste gypsum is 40～60%, the mass percent of flyash is 20～35%, the mass percent of biological sludge is 5～20%, mix after in base-material, adding clay and pore-forming material, the mass percent of its medium clay soil is 8～15%, and the mass percent of pore-forming material is 1～12%;
C), granulation: above-mentioned mixed raw material is added granulation balling-up in the tablets press;
D), burning expands: above-mentioned spherolite is placed sintering pore-creating in the kiln;
E), screening: the product that will burn after expanding is broken into the ceramic product that particle diameter is 3～15mm, is finished product.
2. the technology of utilizing the waste gypsum of acesulfame potassium in producing to make water treatment ceramsite filter according to claim 1 is characterized in that: in the described pretreatment process, also comprise: with biological sludge oven dry or natural air drying to water ratio less than 10%; Flyash and clay separated pulverizing are ground to greater than 325 orders.
3. the technology of utilizing the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production according to claim 1 and 2, it is characterized in that: described pore-forming material is carbon dust, wood charcoal powder or poly-molysite.
4. the technology of utilizing the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production according to claim 1 and 2 is characterized in that: in the described granulating working procedure, after the granulation balling-up, sieve and remove the powder of particle diameter below 0.8mm.
5. the technology of utilizing the waste gypsum manufacturing water treatment ceramsite filter in the acesulfame potassium production according to claim 1 and 2, it is characterized in that: described burning expands in the operation, spherolite is placed in the kiln, at 250 ℃ of insulation oven dry 18～22min, be warming up to 1000～1150 ℃ then, sintering pore-creating earlier, burning the time of expanding is 20～30min, burn to expand and to finish the back and be incubated 8～12min, then in kiln internal cooling to 500～600 ℃, naturally cooling behind the kiln discharge.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102258913A (en) * | 2011-06-10 | 2011-11-30 | 谭海燕 | Low-density ceramsite filter material for biological aerated filter, and preparation method thereof |
| US10023546B2 (en) | 2016-09-21 | 2018-07-17 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10029999B2 (en) | 2016-09-21 | 2018-07-24 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10029998B2 (en) | 2016-09-21 | 2018-07-24 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10030000B2 (en) | 2016-09-21 | 2018-07-24 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| CN109467405A (en) * | 2019-01-08 | 2019-03-15 | 浙江工业大学 | A kind of paper mill sludge brick and preparation method |
| CN110433767A (en) * | 2019-08-30 | 2019-11-12 | 杭州沁霖生态科技有限公司 | A kind of ceramic dephosphorization granule filter material and preparation method thereof |
| CN111099914A (en) * | 2019-12-31 | 2020-05-05 | 浙江大学 | Sludge-based ceramsite filter material for biological aerated filter, and preparation method and application thereof |
| USRE48464E1 (en) | 2012-06-08 | 2021-03-16 | Celanese Sales Germany Gmbh | Process for producing acesulfame potassium |
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| CN101148335A (en) * | 2007-08-31 | 2008-03-26 | 武汉理工大学 | Baking-free plasticizing haydite and preparation method thereof |
| CN101229946A (en) * | 2007-12-29 | 2008-07-30 | 兰州大学 | Biological aerated filter filtering material for treating sewage and preparation method thereof |
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| CN1197050A (en) * | 1997-04-18 | 1998-10-28 | 青岛市应用化学建材厂 | Non-sintering powdered coal ash ceramic pellets and its prodn. method |
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Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102258913A (en) * | 2011-06-10 | 2011-11-30 | 谭海燕 | Low-density ceramsite filter material for biological aerated filter, and preparation method thereof |
| CN102258913B (en) * | 2011-06-10 | 2013-07-17 | 谭海燕 | Low-density ceramsite filter material for biological aerated filter, and preparation method thereof |
| USRE48464E1 (en) | 2012-06-08 | 2021-03-16 | Celanese Sales Germany Gmbh | Process for producing acesulfame potassium |
| US10227316B2 (en) | 2016-09-21 | 2019-03-12 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10954203B2 (en) | 2016-09-21 | 2021-03-23 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10030000B2 (en) | 2016-09-21 | 2018-07-24 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10208004B2 (en) | 2016-09-21 | 2019-02-19 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10029999B2 (en) | 2016-09-21 | 2018-07-24 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US11731948B2 (en) | 2016-09-21 | 2023-08-22 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10233163B2 (en) | 2016-09-21 | 2019-03-19 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10233164B2 (en) | 2016-09-21 | 2019-03-19 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US11724994B2 (en) | 2016-09-21 | 2023-08-15 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10590096B2 (en) | 2016-09-21 | 2020-03-17 | Celenese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10590097B2 (en) | 2016-09-21 | 2020-03-17 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10590095B2 (en) | 2016-09-21 | 2020-03-17 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10590098B2 (en) | 2016-09-21 | 2020-03-17 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US11724993B2 (en) | 2016-09-21 | 2023-08-15 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10759770B2 (en) | 2016-09-21 | 2020-09-01 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10759771B2 (en) | 2016-09-21 | 2020-09-01 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10781190B2 (en) | 2016-09-21 | 2020-09-22 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10781191B2 (en) | 2016-09-21 | 2020-09-22 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10023546B2 (en) | 2016-09-21 | 2018-07-17 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10029998B2 (en) | 2016-09-21 | 2018-07-24 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10954204B2 (en) | 2016-09-21 | 2021-03-23 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10961207B2 (en) | 2016-09-21 | 2021-03-30 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US10975047B2 (en) | 2016-09-21 | 2021-04-13 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| US11718594B2 (en) | 2016-09-21 | 2023-08-08 | Celanese International Corporation | Acesulfame potassium compositions and processes for producing same |
| CN109467405A (en) * | 2019-01-08 | 2019-03-15 | 浙江工业大学 | A kind of paper mill sludge brick and preparation method |
| CN110433767A (en) * | 2019-08-30 | 2019-11-12 | 杭州沁霖生态科技有限公司 | A kind of ceramic dephosphorization granule filter material and preparation method thereof |
| CN111099914A (en) * | 2019-12-31 | 2020-05-05 | 浙江大学 | Sludge-based ceramsite filter material for biological aerated filter, and preparation method and application thereof |
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Effective date of registration: 20221013 Address after: 226009 No. 968, Jiangshan Road, Nantong Economic and Technological Development Zone, Nantong City, Jiangsu Province Patentee after: NANTONG HONGXIN CHEMICAL Co.,Ltd. Address before: 215633 Nansha Sanjiali Road, Jingang Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: SUZHOU HOPE TECHNOLOGY CO.,LTD. |