阅读说明：本技术 一种使用改性糖蜜制成的水煤浆分散剂及其制备方法 (Coal water slurry dispersant prepared from modified molasses and preparation method thereof ) 是由 董翠平 马丽涛 彭城 尤健健 杨道顺 于 2019-11-19 设计创作，主要内容包括：本发明提供一种使用改性糖蜜制成的水煤浆分散剂及其制备方法,涉及水煤浆分散剂技术领域,该水煤浆分散剂原料包括以下重量份的组分：糖蜜30-80份、32％液体氢氧化钠5-25份、27％双氧水5-10份、去离子水350-500份、3-巯基丙酸0.5-1.5份、单体TPEG 200-600 200-335份、吊白块1-2份、甲基丙烯酸20-35份、羟乙酯5-10份。本发明利用糖蜜改性用于工业生产,避免了糖蜜直接处理时的资源浪费,避免了发酵处理时废物排放对环境的污染,实现了改性糖蜜在新领域的应用。(The invention provides a coal water slurry dispersing agent prepared by using modified molasses and a preparation method thereof, relating to the technical field of coal water slurry dispersing agents, wherein the coal water slurry dispersing agent comprises the following components in parts by weight: 30-80 parts of molasses, 5-25 parts of 32% liquid sodium hydroxide, 5-10 parts of 27% hydrogen peroxide, 500 parts of deionized water 350-. The method utilizes the molasses modification for industrial production, avoids resource waste when the molasses is directly treated, avoids the pollution of waste discharge to the environment when the molasses is treated by fermentation, and realizes the application of the modified molasses in the new field.)

1. The coal water slurry dispersing agent prepared from the modified molasses is characterized by comprising the following raw materials in parts by weight: 30-80 parts of molasses, 5-25 parts of 32% liquid sodium hydroxide, 5-10 parts of 27% hydrogen peroxide, 500 parts of deionized water 350-.

2. The dispersant for coal water slurry prepared by using the modified molasses of claim 1, wherein the raw material of the dispersant for coal water slurry comprises the following components in parts by weight: 50 parts of molasses, 10 parts of 32% liquid sodium hydroxide, 6 parts of hydrogen peroxide, 400 parts of deionized water, 0.8 part of 3-mercaptopropionic acid, 200300 parts of monomer TPEG, 1.5 parts of sodium formaldehyde sulfoxylate, 28.8 parts of methacrylic acid and 8.2 parts of hydroxyethyl.

3. The dispersant for coal water slurry prepared by using the modified molasses of claim 1, wherein the raw material of the dispersant for coal water slurry comprises the following components in parts by weight: 80 parts of molasses, 21 parts of 32% liquid alkali, 8.3 parts of hydrogen peroxide, 380 parts of deionized water, 0.9 part of 3-mercaptopropionic acid, 400260 parts of monomer TPEG, 1.5 parts of sodium formaldehyde sulfoxylate, 25 parts of methacrylic acid and 7.6 parts of hydroxyethyl.

4. The dispersant for coal water slurry prepared by using the modified molasses of claim 1, wherein the raw material of the dispersant for coal water slurry comprises the following components in parts by weight: 30 parts of molasses, 6 parts of 32% liquid sodium hydroxide, 5 parts of 27% hydrogen peroxide, 430 parts of deionized water, 1 part of 3-mercaptopropionic acid, 600300 parts of monomer TPEG, 1.8 parts of sodium formaldehyde sulfoxylate, 30 parts of methacrylic acid and 6 parts of hydroxyethyl ester.

5. The dispersant for coal water slurry prepared by using the modified molasses as claimed in any one of claims 1-4, wherein the dispersant for coal water slurry is prepared by a method comprising the steps of:

1) pretreatment of molasses: putting molasses into a flask, heating to 50 ℃, adding 20-30 parts of deionized water, stirring and mixing uniformly, adding 32% liquid sodium hydroxide, cooling to below 35 ℃, adding 3-7 parts of hydrogen peroxide, stirring and reacting for 30-90min to obtain a modified primary product mo for later use;

2) preparing A, B materials: uniformly mixing 130-200 parts of deionized water, 3-mercaptopropionic acid and sodium formaldehyde sulfoxylate to obtain a material A; uniformly mixing 50-110 parts of deionized water, methacrylic acid and hydroxyethyl ester to obtain a material B;

3) taking a four-neck flask, adding 200-600 parts of monomer TPEG and 210 parts of 160-one-neck deionized water, uniformly stirring and mixing, adding the rest hydrogen peroxide, uniformly stirring and mixing, dripping A, B materials into the four-neck flask after 10min, wherein the dripping time of the material A is 2-4h, and the dripping time of the material B is 1.5-3.5 h;

4) and adding the modified primary product Mo after the dripping is finished, and continuously reacting for 1-3h to obtain the coal water slurry dispersing agent Mo.

6. The dispersant for coal water slurry prepared by using modified molasses as claimed in claim 5, wherein hydrogen peroxide is added in step 1) and the reaction time is 60min, and the reaction time in step 4) is 1.5 h.

7. The use of a dispersant for coal water slurry prepared with modified molasses according to any one of claims 1-4 and 6 for dispersing coal water slurry.

Technical Field

The invention relates to the technical field of coal water slurry dispersants, and particularly relates to a coal water slurry dispersant prepared from modified molasses and a preparation method of the coal water slurry dispersant.

Background

Molasses is a by-product in the sugar production process using sugarcane, beet, citrus, corn, etc. as a raw material, and is generally classified into sucrose molasses, beet molasses, citrus molasses, corn molasses, etc. according to the source. The molasses contains a large amount of abundant substance components such as sugar, protein, mineral substances, vitamins, cellulose, amines and the like, and the proportion of each component is slightly different according to different molasses types. At present, the total amount of domestic supplied molasses is about 400 million tons/year, the domestic supplied molasses is mainly used for producing alcohol and yeast through fermentation and is directly treated for producing feed, and meanwhile, part of the modified molasses is used for industrial production such as cement water reducing agent after modification. However, in general, the molasses is directly applied, so that the added value is low, the molasses can be subjected to fermentation deep processing to obtain added value products, but negative effects are generated, the direct discharge of the sewage of the by-product can pollute soil, water sources and the like, and the environmental management is not economical and the energy consumption is high. The additional value of the modified molasses is higher than that of the modified molasses directly applied, and the problem of environmental pollution in fermentation application is also avoided. The mutual influence, rule and material among the modified molasses, cement and concrete components thereof, coal and water-coal-slurry components are hardly reported. Therefore, the molasses modification and the application of the modified molasses in new fields, such as natural biological action of starch, cellulose and the like, can be further researched and developed, an edible green environment-friendly packaging material can be developed, and the modified molasses has wide application and research prospects in the aspects of medicine, pesticide, industry and the like. The modified molasses must bring the economic and social benefits into play in the national economic development.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a coal water slurry dispersing agent prepared by using modified molasses and a preparation method thereof.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

the coal water slurry dispersant prepared by using the modified molasses comprises the following components in parts by weight: 30-80 parts of molasses, 5-25 parts of 32% liquid sodium hydroxide, 5-10 parts of 27% hydrogen peroxide, 500 parts of deionized water 350-.

Preferably, the raw material of the coal water slurry dispersant comprises the following components in parts by weight: 50 parts of molasses, 10 parts of 32% liquid sodium hydroxide, 6 parts of hydrogen peroxide, 400 parts of deionized water, 0.8 part of 3-mercaptopropionic acid, 200300 parts of monomer TPEG, 1.5 parts of sodium formaldehyde sulfoxylate, 28.8 parts of methacrylic acid and 8.2 parts of hydroxyethyl.

Preferably, the raw material of the coal water slurry dispersant comprises the following components in parts by weight: 80 parts of molasses, 21 parts of 32% liquid alkali, 8.3 parts of hydrogen peroxide, 380 parts of deionized water, 0.9 part of 3-mercaptopropionic acid, 400260 parts of monomer TPEG, 1.5 parts of sodium formaldehyde sulfoxylate, 25 parts of methacrylic acid and 7.6 parts of hydroxyethyl.

Preferably, the raw material of the coal water slurry dispersant comprises the following components in parts by weight: 30 parts of molasses, 6 parts of 32% liquid sodium hydroxide, 5 parts of 27% hydrogen peroxide, 430 parts of deionized water, 1 part of 3-mercaptopropionic acid, 600300 parts of monomer TPEG, 1.8 parts of sodium formaldehyde sulfoxylate, 30 parts of methacrylic acid and 6 parts of hydroxyethyl ester.

The preparation method of the coal water slurry dispersing agent prepared by using the modified molasses comprises the following steps:

1) pretreatment of molasses: putting molasses into a flask, heating to 50 ℃, adding 20-30 parts of deionized water, stirring and mixing uniformly, adding 32% liquid sodium hydroxide, cooling to below 35 ℃, adding 3-7 parts of hydrogen peroxide, stirring and reacting for 30-90min to obtain a modified primary product mo for later use;

2) preparing A, B materials: uniformly mixing 130-200 parts of deionized water, 3-mercaptopropionic acid and sodium formaldehyde sulfoxylate to obtain a material A; uniformly mixing 50-110 parts of deionized water, methacrylic acid and hydroxyethyl ester to obtain a material B;

3) taking a four-neck flask, adding 200-600 parts of monomer TPEG and 210 parts of 160-one-neck deionized water, uniformly stirring and mixing, adding the rest hydrogen peroxide, uniformly stirring and mixing, dripping A, B materials into the four-neck flask after 10min, wherein the dripping time of the material A is 2-4h, and the dripping time of the material B is 1.5-3.5 h;

4) and adding the modified primary product Mo after the dripping is finished, and continuously reacting for 1-3h to obtain the coal water slurry dispersing agent Mo.

Preferably, hydrogen peroxide is added in the step 1), and the reaction time is 60min, and the reaction time in the step 4) is 1.5 h.

The coal water slurry dispersing agent prepared by using the modified molasses is applied to the field of coal water slurry dispersing.

(III) advantageous effects

The invention provides a coal water slurry dispersant prepared by using modified molasses and a preparation method thereof, and the coal water slurry dispersant has the following beneficial effects:

1. the modified molasses is used for continuously synthesizing the coal water slurry dispersing agent, and the product contains more active groups such as hydroxyl, carboxyl, carbonyl, ester group, polyoxyethylene group and the like which act on coal water slurry particles, so that the dispersing effect of the coal water slurry is enhanced, and a new direction is opened for the research of the coal water slurry dispersing agent.

2. The invention uses the modified molasses for industrial production, avoids resource waste when the molasses is directly treated, avoids the pollution of waste discharge to the environment when the molasses is treated by fermentation, and realizes the application of the modified molasses in the new field.

3. The coal water slurry prepared by the invention has low production cost, can act on the coal water slurry alone to play a good dispersing role, and the dispersing effect, the adaptability and the stability of the product can be greatly improved when the coal water slurry is compounded with other dispersing agents (such as a naphthalenesulfonic acid-formaldehyde condensate, an aliphatic water reducing agent, sodium lignosulfonate and the like) and sodium carbonate according to a certain proportion compared with the single use.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The molasses used in the invention is common cane molasses, and the main components of the molasses are as follows: 2 to 26.2 percent of water, 40 to 49.6 percent of cane sugar, 6 to 7.1 percent of mineral, 8.2 to 12.6 percent of ash and 4.3 to 5.9 percent of protein.

In the following examples, a naphthalene sulfonate formaldehyde condensate produced by Anhuxin environmental protection technology, Inc. was used for comparison, and NX was used in place of the condensate.

The instrument and the detection method for detecting the characteristics of the coal water slurry are as follows: 1. the experimental apparatus is a Brookield Bohler fly DV1 viscometer, a 150ml beaker, and a halogen moisture meter, USA.

2. The experimental steps include ① switching on the power supply of the experimental instrument, adjusting the level and automatically adjusting the zero, ② taking the same amount of sample and placing the sample in a 150ml beaker to ensure the temperature and the quality of the measured sample, placing the beaker below the instrument to enable a rotor to enter the sample until a scale mark on the rotor, and starting the test by pressing a start key, ③ measuring the viscosity of the sample by using a 62# rotor at the speed of a shearing speed position 20, wherein the viscosity comparison must be carried out under the same instrument, rotor, speed, container, temperature and test time.

The experimental instrument and the detection method used for the fluidity experiment are as follows:

1. experimental apparatus a. truncated cone circular mold: the diameter of the upper opening is 36mm, the diameter of the lower opening is 60mm, the height is 60mm, and the inner wall of the metal product is smooth and has no seam; b. glass plates (400X 400mm, thickness 5 mm); c. straightedge in steel, (300 mm); d. and (4) scraping the blade.

2. The experimental steps include ① placing the glass plate in a horizontal position, wetting the surface of the glass plate, the truncated cone round mold, the stirrer and the stirring pot with wet cloth without water stain, ② placing the truncated cone round mold in the center of the glass plate and covering with wet cloth for standby, ③ quickly injecting the coal water slurry into the truncated cone round mold, scraping with a scraper, vertically lifting the truncated cone round mold until the coal water slurry flows on the glass plate until the coal water slurry does not flow, measuring the maximum diameter of the flowing part in two mutually perpendicular directions with a ruler, and taking the average value as the fluidity of the coal water slurry.

3. And (3) stability testing, namely testing the stability by adopting a rod dropping method, wherein the required experimental apparatus and the detection method are as follows:

an experimental instrument: 150ml beaker, electronic balance, preservative film, 300mm ruler and timer.

The experimental steps are as follows: 150g of the coal water slurry was weighed into a 150ml beaker, completely sealed with a sealing film, left to stand at room temperature, and the depths (H1 and H2) of 10X 200mm glass rods at 10s for 5 minutes were measured within 24 hours while the actual depths (H) were measured to calculate the soft precipitation rate and the hard precipitation rate in accordance with the following equation. Soft precipitation rate (H-H1)/hx 100%, and hard precipitation rate (H-H2)/hx 100%.