CN106241849A - A kind of method utilizing the waste water producing naphthalenedisulfonic acid to prepare gypsum for cement - Google Patents
A kind of method utilizing the waste water producing naphthalenedisulfonic acid to prepare gypsum for cement Download PDFInfo
- Publication number
- CN106241849A CN106241849A CN201610488418.0A CN201610488418A CN106241849A CN 106241849 A CN106241849 A CN 106241849A CN 201610488418 A CN201610488418 A CN 201610488418A CN 106241849 A CN106241849 A CN 106241849A
- Authority
- CN
- China
- Prior art keywords
- waste water
- naphthalenedisulfonic acid
- cement
- water
- gypsum
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
Abstract
The invention discloses a kind of waste water method of preparing gypsum for cement utilizing and producing naphthalenedisulfonic acid, the method takes off the material stating quality proportioning: waste water 100 parts；30 300 parts of naphthalenedisulfonic acid mother solution；Paris white 12 180 parts；Wherein: waste water is the waste water that LOMAR PWA EINECS 246-676-2 series chemical product produces, and water content is 62～68%；Naphthalenedisulfonic acid mother liquor composition ratio: naphthalenedisulfonic acid mixture account for 5～10%, sulphuric acid account for 30～60%, water content be 30～65%；It is simple to operate that the present invention utilizes the waste water producing naphthalenedisulfonic acid to prepare the method for gypsum for cement, and occupation area of equipment is little；Equipment is simple, invests less, and the waste water of generation is capable of circulation to be applied mechanically, and the product composition obtained is stable.
Description
Technical field
The invention belongs to chemical field, prepare the production of gypsum for cement particularly to a kind of waste water utilizing naphthalenedisulfonic acid
Method.
Background technology
Calcium sulfate is to manufacture cement, half-H 2 O calcium sulphate and the raw material of sulphuric acid.Paint and paper industry are used as filler.Agriculture
It is used as chemical fertilizer in industry, soil alkalinity can be reduced, improve soil function etc..Different industries is different to the requirement standard of calcium sulfate,
Calcium sulfate is caused to process or to separate before being really applied to various industry.
Existing synthetic gypsum production technology, is natural gypsum ore deposit Ex-all impurity, earth to be formed through calcining pulverizing, also has dew
It exploitation also has underground mining.Above technological system is complicated, and floor space is big；Cost is high, and one-time investment is big；Operation problem is relatively
Many due to side-product CaSO4Easily deposition and bonding, so, easily cause system dirty, block and wear and tear；Operating cost
Height, high liquid/gas is bigger than the electricity brought, water circulation and consumption；The composition of desulfurated plaster is unstable；Waste resource；Produce
Method is complicated and there is unsafe factor, affects the physical and mental health of worker.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the present invention provides a kind of waste water utilizing naphthalenedisulfonic acid to prepare gypsum for cement
Production method.The method utilizes the waste water of naphthalenedisulfonic acid to produce as raw material, advanced simple, and low cost easily operates, produces
Raw waste water reusable edible, has significant economic benefit and social benefit.
The technical scheme is that a kind of method utilizing the waste water producing naphthalenedisulfonic acid to prepare gypsum for cement, its
It is characterised by: take off the material stating quality proportioning: waste water 100 parts；Naphthalenedisulfonic acid mother solution 30-300 part；Paris white 12-180
Part；
Wherein: waste water is the waste water that LOMAR PWA EINECS 246-676-2 series chemical product produces, and water content is 62～68%；Naphthalenedisulfonic acid mother solution
Component ratio: naphthalenedisulfonic acid mixture account for 5～10%, sulphuric acid account for 30～60%, water content be 30～65%；
Production stage is as follows:
Step one: add above-mentioned waste water in a kettle., is slowly added to above-mentioned Paris white under agitation, and mixing is all
Even；
Step 2: at a temperature of 45～60 DEG C, is slowly added to above-mentioned naphthalenedisulfonic acid mother solution to reactor；
Step 3: after charging, stirs reaction 30 ± 5min at a temperature of 45～60 DEG C, surveys pH value；PH value be 6～
7 and when not changing, continue stirring reaction 30 ± 5min, after filter pressing, obtaining final products is gypsum for cement, and this product quality is divided
Analysis standard: SO3 >=35%；Water of crystallization >=12%；Filter pressing obtains waste water and reuses after treatment.
Advantages of the present invention effect is: simple to operate, occupation area of equipment is little；Equipment is simple, invests less, giving up of generation
Water is capable of circulation to be applied mechanically, and the product composition obtained is stable.
Detailed description of the invention
Embodiment 1:
Step one: the waste water 298kg of suction water content in a kettle. 67%, at the uniform velocity adds Paris white under stirring
135kg；
Step 2: when heating makes temperature be raised to 48 DEG C, be slowly added to the naphthalenedisulfonic acid mother solution of 300kg (wherein: naphthalenedisulfonic acid
18kg；Sulphuric acid 102kg, water 180kg), in adition process, temperature must not exceed 60 DEG C, adds rear testing temperature 55 DEG C；
Step 3: after having fed intake, at a temperature of 55 DEG C, stirs 30min, surveys pH value, is 6～7 and do not change at pH value
Time, continue stirring reaction 30min；Filter pressing obtains gypsum for cement 250kg；This product quality analysis standard: SO3 >=35%；Crystallization
Water >=12%；Filter pressing obtains waste water 330kg, and water content is 65%, adds water, and making water content is 67%, reuses.
Embodiment 2:
Step one: the waste water 290kg of suction water content in a kettle. 67%, at the uniform velocity adds Paris white under stirring
130kg；
Step 2: when heating makes temperature be raised to 55 DEG C, be slowly added to the naphthalenedisulfonic acid mother solution of 290kg (wherein: naphthalenedisulfonic acid
25kg；Sulphuric acid 100kg, water 165kg), in adition process, temperature must not exceed 60 DEG C, adds rear testing temperature 58 DEG C；
Step 3: after having fed intake, at a temperature of 58 DEG C, stirs 35min, surveys pH value, is 6～7 and do not change at pH value
Time, continue stirring reaction 25min；Filter pressing obtains gypsum for cement 230kg；This product quality analysis standard: SO3 >=35%；Crystallization
Water >=12%；Filter pressing obtains waste water 330kg, and water content is 65%, adds water, and making water content is 67%, reuses.
Claims (1)
1. one kind utilizes the waste water method of preparing gypsum for cement producing naphthalenedisulfonic acid, it is characterised in that: take off and state quality and join
The material of ratio: waste water 100 parts；Naphthalenedisulfonic acid mother solution 30-300 part；Paris white 12-180 part；
Wherein: waste water is the waste water that LOMAR PWA EINECS 246-676-2 series chemical product produces, and water content is 62～68%；
Naphthalenedisulfonic acid mother liquor composition ratio: naphthalenedisulfonic acid mixture account for 5～10%, sulphuric acid account for 30～60%, water content be 30～
65%；
Production stage is as follows:
Step one: add above-mentioned waste water in a kettle., be slowly added to above-mentioned Paris white, mix homogeneously under agitation；
Step 2: at a temperature of 45～60 DEG C, is slowly added to above-mentioned naphthalenedisulfonic acid mother solution to reactor；
Step 3: after charging, stirs reaction 30 ± 5min at a temperature of 45～60 DEG C, surveys pH value；PH value be 6～7 and
When not changing, continuing stirring reaction 30 ± 5min, after filter pressing, obtaining final products is gypsum for cement, this product quality analysis
Standard: SO3 >=35%；Water of crystallization >=12%；Filter pressing obtains waste water and reuses after treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610488418.0A CN106241849A (en) | 2016-06-27 | 2016-06-27 | A kind of method utilizing the waste water producing naphthalenedisulfonic acid to prepare gypsum for cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610488418.0A CN106241849A (en) | 2016-06-27 | 2016-06-27 | A kind of method utilizing the waste water producing naphthalenedisulfonic acid to prepare gypsum for cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106241849A true CN106241849A (en) | 2016-12-21 |
Family
ID=57613122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610488418.0A Pending CN106241849A (en) | 2016-06-27 | 2016-06-27 | A kind of method utilizing the waste water producing naphthalenedisulfonic acid to prepare gypsum for cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106241849A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648291A (en) * | 2004-11-30 | 2005-08-03 | 上海耀华纳米科技有限公司 | Process for preparing whisker calcium sulfate |
| CN101029415A (en) * | 2007-01-23 | 2007-09-05 | 东北大学 | Production of non-metallic material calcium-sulfate whiskers |
| CN102030354A (en) * | 2010-10-18 | 2011-04-27 | 中蓝连海设计研究院 | Treatment method of waste sulfuric acid |
| CN104692443A (en) * | 2015-03-24 | 2015-06-10 | 枣庄市泰瑞精细化工有限公司 | Manufacturing method using 1,5 naphthalene disulfonic acid reactive mother solution to prepare calcium sulfate |
-
2016
- 2016-06-27 CN CN201610488418.0A patent/CN106241849A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648291A (en) * | 2004-11-30 | 2005-08-03 | 上海耀华纳米科技有限公司 | Process for preparing whisker calcium sulfate |
| CN101029415A (en) * | 2007-01-23 | 2007-09-05 | 东北大学 | Production of non-metallic material calcium-sulfate whiskers |
| CN102030354A (en) * | 2010-10-18 | 2011-04-27 | 中蓝连海设计研究院 | Treatment method of waste sulfuric acid |
| CN104692443A (en) * | 2015-03-24 | 2015-06-10 | 枣庄市泰瑞精细化工有限公司 | Manufacturing method using 1,5 naphthalene disulfonic acid reactive mother solution to prepare calcium sulfate |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161221 |