CN110564468A - Environment-friendly coal water slurry additive and application thereof in preparation process of superfine-grinding high-concentration coal slurry in coal chemical industry - Google Patents
Environment-friendly coal water slurry additive and application thereof in preparation process of superfine-grinding high-concentration coal slurry in coal chemical industry Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/326—Coal-water suspensions
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
- C10L1/1828—Salts thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/24—Organic compounds containing sulfur, selenium and/or tellurium
- C10L1/2431—Organic compounds containing sulfur, selenium and/or tellurium sulfur bond to oxygen, e.g. sulfones, sulfoxides
- C10L1/2437—Sulfonic acids; Derivatives thereof, e.g. sulfonamides, sulfosuccinic acid esters
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Abstract
The invention discloses an environment-friendly coal water slurry additive, which comprises the following components in percentage by weight: 0-50% of gluconate, 0-50% of starch industrial wastewater (by solid content), 0-50% of naphthalene sulfonate formaldehyde condensate and 0-50% of sulfonated acetone-formaldehyde polycondensate, wherein at least one of the two raw materials of the gluconate and the starch industrial wastewater is adopted, the starch industrial wastewater is firstly compounded with the gluconate after the pH value is adjusted to be neutral or weakly alkaline, and then is compounded with the naphthalene sulfonate formaldehyde condensate and/or the sulfonated acetone-formaldehyde polycondensate to prepare the finished product additive. The environment-friendly coal water slurry additive disclosed by the invention is low in addition rate, and the cost for preparing the coal water slurry is reduced; the prepared coal water slurry has high concentration, low apparent viscosity, good fluidity and good stability, does not have hard precipitation after standing for 48 hours, and obviously improves the performance of the coal water slurry; no toxicity and strong biodegradability, and can fully meet the requirements of green and ecological protection.
Description
Technical Field
The invention relates to the field of coal chemical industry, in particular to an environment-friendly coal water slurry additive and application thereof in a preparation process of superfine-grinding high-concentration coal slurry in the coal chemical industry.
Background
The coal main body belongs to hydrophobic nonpolar hydrocarbon, the function of the coal water slurry additive is to enable coal powder to be dispersed in water to form uniform and stable slurry with fluidity, the dispersion mechanism of the coal water slurry additive is mainly to effectively adsorb on the surfaces of coal particles, improve the hydrophilicity of the coal particles, and form an electric double layer and steric hindrance on the surfaces of the coal particles. The coal water slurry additives are generally divided into two categories, namely anionic additives and nonionic additives, and in view of the use effect, cost, easiness in obtaining raw materials and the like, lignin additives, such as alkali lignin and lignosulfonate, are widely used in the market at present; naphthalene series, such as naphthalene sulfonate formaldehyde condensates; aliphatic additives such as sulfonated acetone-formaldehyde polycondensate, etc.; or a combination of two or more of the above. For example: the patent application with the publication number of CN109628177A discloses a ternary or multi-element coal water slurry additive, and specifically discloses a ternary or multi-element coal water slurry additive which comprises the following components in parts by mass: 65% of coal, 34% of water and 1% of additive, wherein the additive comprises the following components in parts by mass: 30-98% of lignin, 0-50% of naphthalene water reducing agent, 0-50% of sulfamate and 0-10% of surfactant.
The traditional rod mill pulping process for preparing coal slurry in coal chemical enterprises has the defects that the coal slurry concentration is difficult to improve due to unreasonable granularity grading of the coal slurry, and the coal slurry has poor fluidity, stability and atomization performance, so that the gasification efficiency is reduced, the coal consumption and the oxygen consumption required by gasification are high, the abrasion of a nozzle of a gasification furnace is aggravated, and the shutdown times and the operation cost of the gasification furnace are increased.
In order to reduce cost, improve efficiency and expand capacity, coal chemical enterprises have been vigorously promoted in recent years to modify the existing coal slurry preparation system by the ultrafine grinding coal slurry concentration and pulping process, namely, the ultrafine grinding device is added to add fine slurry, so that the particle size distribution of the coal slurry is optimized, the coal slurry stacking efficiency is improved, and the fluidity, stability and atomization performance of the coal slurry are improved, thereby stably improving the coal slurry concentration, greatly reducing the gasification coal consumption and oxygen consumption, and improving the operation technical index of the gasification furnace.
When the technology of adding the fine slurry into the superfine grinding pulping is adopted, the specific surface area of coal particles is greatly increased, and the slurry forms a specific viscous fluid form, so that the unfavorable working conditions of slurry hanging and slurry running of a rotary screen of a coal mill are easily generated, and the technological improvement technology can be met only by selecting and adopting a coal water slurry additive product which has better pulping performance and fully adapts to the special working condition.
in the preparation process of the coal water slurry adopting the superfine grinding device, because of the addition of the fine slurry, a dense stacking structure is formed by embedding finer coal particles into gaps of coarser coal particles, the granularity distribution of the coal slurry is optimized, the stacking efficiency and the concentration of the coal slurry are improved, but meanwhile, the specific surface area and the stacking density of the coal particles are greatly increased, and the existing common coal water slurry additive is adopted, the slurry is easy to form a specific viscosity fluid form, so that the unfavorable working conditions of slurry hanging and slurry running of a drum screen of a coal mill are easily generated, the effective improvement of the concentration of the coal slurry is seriously hindered, and the addition rate of the high coal water slurry additive is required, so that the pulping cost is greatly increased.
Disclosure of Invention
The first invention aims at solving the problems that the traditional rod mill pulping process in the background art adopts lignin, naphthalene or aliphatic additives due to unreasonable coal slurry particle size grading, the coal slurry concentration is difficult to improve, and the coal slurry fluidity, stability and atomization performance are poor, so that the gasification efficiency is reduced, the coal consumption and oxygen consumption required by gasification are high, the abrasion of a gasification furnace nozzle is aggravated, and the shutdown times and the operation cost of the gasification furnace are increased; in the preparation process of the coal water slurry adopting the superfine grinding device, because fine slurry is added, a dense stacking structure is formed by embedding finer coal particles into gaps of coarser coal particles, the granularity distribution of the coal slurry is optimized, the stacking efficiency and concentration of the coal slurry are improved, but meanwhile, the specific surface area and the stacking density of the coal particles are greatly increased, and the slurry is easy to form a special viscosity fluid form by adopting the existing common coal water slurry additive, so that the unfavorable working conditions of slurry hanging and slurry running of a drum screen of a coal mill are easily generated, the effective improvement of the concentration of the coal slurry is seriously hindered, and the problem of great increase of the pulping cost is caused by the high addition rate of the coal water slurry additive is needed, and the environment-friendly coal water slurry additive is provided.
The technical scheme capable of realizing the aim of the invention is as follows:
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 0-50% of gluconate, 0-50% of starch industrial wastewater (by solid content), 0-50% of naphthalene sulfonate formaldehyde condensate and 0-50% of sulfonated acetone-formaldehyde polycondensate, wherein at least one of the two raw materials of the gluconate and the starch industrial wastewater is adopted, the starch industrial wastewater is firstly compounded with the gluconate after the pH value is adjusted to be neutral or weakly alkaline, and then is compounded with the naphthalene sulfonate formaldehyde condensate and/or the sulfonated acetone-formaldehyde polycondensate to prepare the finished product additive.
In the scheme, the paint comprises the following components in percentage by weight: 25 to 50 percent of gluconate, 0 to 50 percent of naphthalene sulfonate formaldehyde condensate and 0 to 50 percent of sulfonated acetone-formaldehyde polycondensate.
In the scheme, the paint comprises the following components in percentage by weight: 25 to 50 percent of starch industrial wastewater (by solid content), 0 to 50 percent of naphthalene sulfonate formaldehyde condensate and 0 to 50 percent of sulfonated acetone-formaldehyde condensate.
In the scheme, the paint comprises the following components in percentage by weight: 25 to 50 percent of gluconate, 25 to 50 percent of starch industrial wastewater (by solid content), 0 to 50 percent of naphthalene sulfonate formaldehyde condensate and 0 to 50 percent of sulfonated acetone-formaldehyde polycondensate.
In the scheme, the gluconate is one or more of gluconic acid sodium salt, gluconic acid potassium salt or gluconic acid ammonia salt.
In the scheme, the naphthalenesulfonate formaldehyde condensate is one or more of sodium naphthalenesulfonate formaldehyde condensate, potassium naphthalenesulfonate formaldehyde condensate or naphthalenesulfonate ammonia formaldehyde condensate.
The invention also aims to provide the application of the environment-friendly water-coal-slurry additive in the preparation process of coal chemical ultrafine-milled high-concentration coal slurry, and the additive is used in the preparation process of coal chemical ultrafine-milled coal slurry with high coal particle bulk density and large specific surface area, and can obviously improve the concentration, the flowability and the stability of the coal-water-slurry.
The invention has the following beneficial effects: 1) in the scheme of the invention, the gluconate is used as polyhydroxy carboxylate and is rich in carboxyl and hydroxyl active groups, meanwhile, carbohydrate (starch, cellulose and the like) which is rich in the starch industrial wastewater belongs to polyhydroxy natural high molecular compounds, and the contained water-soluble protein polypeptide structure is rich in carboxyl, amino and other groups, the hydrophilic functional groups and the polymer long-chain structure can form stable affinity between the coal particles and water in a multi-node and multi-surface way through the interaction of hydrogen bonds, electric attraction and other adsorption, bridging and the like, so that the unit quantity and the action effect of the active groups in a water-coal system are effectively improved, and compared with the common water-coal slurry additive with insufficient quantity and action efficiency of the active groups, the chemical structure and the mechanism are more beneficial to the successful preparation of superfine grinding high-concentration coal slurry with high coal particle stacking density and large specific surface area; 2) the invention discloses a compounding synergistic effect of gluconate and starch industrial wastewater and a naphthalenesulfonate formaldehyde condensate and/or a sulfonated acetone-formaldehyde polycondensate, and the environment-friendly coal water slurry additive prepared by compounding can obviously improve the performance of the prepared coal water slurry; 3) compared with the existing coal water slurry additive under the same condition, the environment-friendly coal water slurry additive prepared by the scheme of the invention has the advantages of less consumption, low addition rate of the coal water slurry additive and reduction of the cost for preparing the coal water slurry, and 4) the prepared coal water slurry has high concentration, low apparent viscosity, good fluidity and good stability, does not have hard precipitation after standing for 48 hours, and obviously improves the performance of the coal water slurry; 5) the coal water slurry prepared by the environment-friendly coal water slurry additive improves the concentration of the coal water slurry and reduces the viscosity, so that a viscous fluid form cannot be formed, the unfavorable working conditions of slurry hanging and slurry running of a coal mill drum screen cannot be generated, the problem which is urgently needed to be solved in the existing coal water slurry preparation process is well solved, and the economic benefit is improved; 6) gluconate is industrially prepared by taking a substance containing glucose (such as grains) as a raw material by a fermentation method, and has no toxicity and strong biodegradability; the starch industrial wastewater is wastewater generated by processing or deeply processing starch by taking agricultural products as raw materials, and the formula of the invention belongs to an environment-friendly design, can effectively reduce environmental pollution, comprehensively meet the requirements of green and ecological protection, and simultaneously can better realize the efficient comprehensive utilization of water-soluble saccharides, proteins and other material resources in the wastewater.
Detailed Description
The invention will be further illustrated with reference to specific examples:
Example 1
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 50% of sodium gluconate and 50% of starch industrial wastewater (by solid content), wherein the starch industrial wastewater is compounded with gluconate after the pH value of sodium hydroxide is adjusted to 7.
the compounded water-coal-slurry additive can be used for water-coal-slurry prepared by the traditional rod mill pulping process and can also be used for ultra-fine grinding water-coal-slurry preparation process.
Example 2
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 50% of sodium gluconate, 25% of starch industrial wastewater (by solid content), 25% of sodium naphthalenesulfonate formaldehyde condensate, and the finished product additive is prepared by adjusting the pH value of the starch industrial wastewater to 8, compounding the starch industrial wastewater with the sodium gluconate and then compounding the starch industrial wastewater with the sodium naphthalenesulfonate formaldehyde condensate.
Example 3
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 25% of potassium gluconate, 50% of starch industrial wastewater (by solid content), 25% of potassium naphthalenesulfonate formaldehyde condensate, and the finished product additive is prepared by adjusting the pH value of the starch industrial wastewater to 7.5, compounding the starch industrial wastewater with potassium gluconate and then compounding the starch industrial wastewater with the potassium naphthalenesulfonate formaldehyde condensate.
Example 4
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 50% of gluconic ammonia, 25% of starch industrial wastewater (by solid content), 25% of sulfonated acetone-formaldehyde polycondensate, wherein the starch industrial wastewater is firstly compounded with the gluconic ammonia after the pH value is adjusted to 7, and then is compounded with the sulfonated acetone-formaldehyde polycondensate to prepare the finished product additive.
Example 5
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 25% of sodium gluconate, 50% of starch industrial wastewater (by solid content), 25% of sulfonated acetone-formaldehyde polycondensate, wherein the starch industrial wastewater is firstly compounded with the sodium gluconate after the pH value is adjusted to 7.5, and then is compounded with the sulfonated acetone-formaldehyde polycondensate to obtain the finished product additive.
Example 6
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 25% of potassium gluconate, 25% of starch industrial wastewater (by solid content), 25% of naphthalenesulfonic acid ammonia-formaldehyde condensation polymer and 25% of sulfonated acetone-formaldehyde condensation polymer, wherein the starch industrial wastewater is firstly compounded with the potassium gluconate after the pH value is adjusted to 7, and then is compounded with the naphthalenesulfonic acid ammonia-formaldehyde condensation polymer and the sulfonated acetone-formaldehyde condensation polymer to obtain the finished product additive.
Example 7
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 50% of starch industrial wastewater (by solid content), 25% of naphthalenesulfonic acid ammonia-formaldehyde condensate and 25% of sulfonated acetone-formaldehyde polycondensate, wherein the starch industrial wastewater is subjected to pH value adjustment to 8 and then is compounded with the naphthalenesulfonic acid ammonia-formaldehyde condensate and the sulfonated acetone-formaldehyde polycondensate to prepare the finished product additive.
Example 8
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 50% of starch industrial wastewater (by solid content), 50% of sodium naphthalenesulfonate formaldehyde condensate, and the finished additive is prepared by compounding the starch industrial wastewater and the sodium naphthalenesulfonate formaldehyde condensate after the pH value of the starch industrial wastewater is adjusted to 7.5.
Example 9
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 50% of starch industrial wastewater (by solid content), 50% of sulfonated acetone-formaldehyde polycondensate, and compounding the starch industrial wastewater with the sulfonated acetone-formaldehyde polycondensate after the pH value of the starch industrial wastewater is adjusted to 7.5 to obtain the finished product additive.
Example 10
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 50% of potassium gluconate, 25% of sodium naphthalene sulfonate formaldehyde condensate, 25% of sulfonated acetone-formaldehyde polycondensate, and compounding the potassium gluconate, the sodium naphthalene sulfonate formaldehyde condensate and the sulfonated acetone-formaldehyde polycondensate to obtain the finished product additive.
Example 11
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 50% of gluconic acid ammonia, 50% of potassium naphthalenesulfonate formaldehyde condensate, and compounding the gluconic acid ammonia and the potassium naphthalenesulfonate formaldehyde condensate to obtain the finished product additive.
example 12
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 50% of sodium gluconate, 50% of sulfonated acetone-formaldehyde polycondensate and compounding of the sodium gluconate and the sulfonated acetone-formaldehyde polycondensate to obtain the finished product additive.
Example 13
an environment-friendly coal water slurry additive comprises the following components in percentage by weight: 25% of potassium gluconate, 25% of starch industrial wastewater (calculated by solid content), 50% of sodium naphthalenesulfonate formaldehyde condensate, and the finished product additive is prepared by firstly compounding the starch industrial wastewater with potassium gluconate after the pH value of the starch industrial wastewater is adjusted to 7 and then compounding the starch industrial wastewater with the sodium naphthalenesulfonate formaldehyde condensate.
Example 14
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 25% of sodium gluconate, 25% of starch industrial wastewater (by solid content), 50% of sulfonated acetone-formaldehyde polycondensate, wherein the starch industrial wastewater is firstly compounded with the sodium gluconate after the pH value is adjusted to 7.2, and then is compounded with the sulfonated acetone-formaldehyde polycondensate to obtain the finished product additive.
Example 15
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 30% of potassium gluconate, 40% of starch industrial wastewater (by solid content), 20% of naphthalenesulfonic acid ammonia-formaldehyde condensation polymer and 10% of sulfonated acetone-formaldehyde condensation polymer, wherein the starch industrial wastewater is firstly compounded with the potassium gluconate after the pH value is adjusted to 7.8, and then is compounded with the naphthalenesulfonic acid ammonia-formaldehyde condensation polymer and the sulfonated acetone-formaldehyde condensation polymer to prepare the finished product additive.
Example 16
An environment-friendly coal water slurry additive comprises the following components in percentage by weight: 40% of gluconic ammonia, 30% of starch industrial wastewater (by solid content), 10% of sodium naphthalenesulfonate formaldehyde condensate, and 20% of sulfonated acetone-formaldehyde polycondensate, wherein the starch industrial wastewater is firstly compounded with the gluconic ammonia after the pH value is adjusted to 7.8, and then is compounded with the sodium naphthalenesulfonate formaldehyde condensate and the sulfonated acetone-formaldehyde polycondensate to prepare the finished product additive.
The following table shows the weight ratio of each component of the environment-friendly coal water slurry additive of examples 1 to 16
The following are experimental results obtained by the applicant in experimental tests on the existing coal water slurry additives and the coal water slurry additives of embodiments 1 to 16 of the present invention, and the performance test method is as follows:
Crushing, drying and grinding the coal sample, then screening by using a stainless steel standard analysis set screen to prepare coal powder which accords with the particle size distribution of the superfine grinding process, stirring and uniformly mixing the graded coal powder, the coal grinding water and the additive at a high speed according to the proportion under different set coal slurry concentrations to form slurry, and testing to obtain the quality technical indexes of the coal water slurry such as concentration, viscosity, fluidity, 48-hour stability and the like.
The following table shows the comparative experimental results of the environment-friendly coal water slurry additives of examples 1 to 16 and the existing additives:
Compared with the existing coal water slurry additive under the same condition, the environment-friendly coal water slurry additive prepared by the scheme of the invention has the advantages of low dosage, low addition rate of the coal water slurry additive, reduction in the cost for preparing the coal water slurry, high concentration of the prepared coal water slurry, low apparent viscosity, good fluidity and good stability, does not generate hard precipitation after standing for 48 hours, and obviously improves the performance of the coal water slurry. The coal water slurry prepared by the environment-friendly coal water slurry additive improves the concentration of the coal water slurry and reduces the viscosity, so that a viscous fluid form cannot be formed, the unfavorable working conditions of slurry hanging and slurry running of a coal mill drum screen cannot be generated, the problem which is urgently needed to be solved in the existing coal water slurry preparation process is well solved, and the economic benefit is improved. In addition, the gluconate is generally prepared by taking substances (such as grains) containing glucose as raw materials in the industry and adopting a fermentation method, has no toxicity, can be rapidly and completely degraded through common biochemical treatment, and the starch industrial wastewater is wastewater generated by processing or deeply processing starch by taking agricultural products as raw materials.
The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.
Claims (7)
1. An environment-friendly coal water slurry additive is characterized in that: the paint comprises the following components in percentage by weight: 0-50% of gluconate, 0-50% of starch industrial wastewater (by solid content), 0-50% of naphthalene sulfonate formaldehyde condensate and 0-50% of sulfonated acetone-formaldehyde polycondensate, wherein at least one of the two raw materials of the gluconate and the starch industrial wastewater is adopted, the starch industrial wastewater is firstly compounded with the gluconate after the pH value is adjusted to be neutral or weakly alkaline, and then is compounded with the naphthalene sulfonate formaldehyde condensate and/or the sulfonated acetone-formaldehyde polycondensate to prepare the finished product additive.
2. An environment-friendly coal water slurry additive is characterized in that: the paint comprises the following components in percentage by weight: 25 to 50 percent of gluconate, 0 to 50 percent of naphthalene sulfonate formaldehyde condensate and 0 to 50 percent of sulfonated acetone-formaldehyde polycondensate.
3. The environment-friendly coal-water slurry additive according to claim 1, wherein: the paint comprises the following components in percentage by weight: 25 to 50 percent of starch industrial wastewater (by solid content), 0 to 50 percent of naphthalene sulfonate formaldehyde condensate and 0 to 50 percent of sulfonated acetone-formaldehyde condensate.
4. The environment-friendly coal-water slurry additive according to claim 1, wherein: the paint comprises the following components in percentage by weight: 25 to 50 percent of gluconate, 25 to 50 percent of starch industrial wastewater (by solid content), 0 to 50 percent of naphthalene sulfonate formaldehyde condensate and 0 to 50 percent of sulfonated acetone-formaldehyde polycondensate.
5. The environment-friendly coal-water slurry additive according to claim 1, wherein: the gluconate is one or more of sodium gluconate, potassium gluconate or ammonium gluconate.
6. The environment-friendly coal-water slurry additive according to claim 1, wherein: the naphthalenesulfonate formaldehyde condensate is one or more of sodium naphthalenesulfonate formaldehyde condensate, potassium naphthalenesulfonate formaldehyde condensate or naphthalenesulfonate ammonia formaldehyde condensate.
7. The use of the environment-friendly coal-water slurry additive as claimed in any one of claims 1 to 6, wherein: the method is used in the preparation process of the coal chemical ultra-fine grinding high-concentration coal slurry with high coal particle stacking density and large specific surface area, and can obviously improve the concentration, the fluidity and the stability of the coal slurry.
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| CN104194847A (en) * | 2014-08-22 | 2014-12-10 | 常州中南化工有限公司 | Coal water slurry additive containing cardanol sulfonate and application of coal water slurry additive |
| CN104910978A (en) * | 2015-05-29 | 2015-09-16 | 马健 | Smoke-eliminating antifreezing agent for diesel oil |
| CN106118764A (en) * | 2016-06-22 | 2016-11-16 | 艾永生 | A kind of slurries additive agent |
| CN109865349A (en) * | 2019-02-26 | 2019-06-11 | 常州中南化工有限公司 | A kind of heavy alkali filter aid of starch-containing industrial wastewater |
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2019
- 2019-08-23 CN CN201910785038.7A patent/CN110564468B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194847A (en) * | 2014-08-22 | 2014-12-10 | 常州中南化工有限公司 | Coal water slurry additive containing cardanol sulfonate and application of coal water slurry additive |
| CN104910978A (en) * | 2015-05-29 | 2015-09-16 | 马健 | Smoke-eliminating antifreezing agent for diesel oil |
| CN106118764A (en) * | 2016-06-22 | 2016-11-16 | 艾永生 | A kind of slurries additive agent |
| CN109865349A (en) * | 2019-02-26 | 2019-06-11 | 常州中南化工有限公司 | A kind of heavy alkali filter aid of starch-containing industrial wastewater |
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