阅读说明：本技术 一种利用1-氨基蒽醌生产废水制备水煤浆的装置及其使用方法 (Device for preparing coal water slurry by using 1-aminoanthraquinone production wastewater and using method thereof ) 是由 马丽涛 董翠平 彭城 张承家 杨道顺 于 2020-06-12 设计创作，主要内容包括：本发明涉及一种利用1-氨基蒽醌生产废水制备水煤浆的装置及其使用方法,包括水煤浆分散剂制备装置、原煤破碎机、粗磨机、细磨机、气化炉,所述水煤浆分散剂制备装置由反应釜、保温箱、分散剂储存箱构成,通过水煤浆分散剂制备装置利用1-氨基蒽醌生产废水生产出水煤浆分散剂,之后与水、煤粉进行充分混合形成水煤浆,再通过气化炉进行气化,实现1-氨基蒽醌生产废水和DSD生产废水资源再利用,防止对环境、对人体造成污染与损害,同时不用进行其他物理、化学等任何处理,不会造成二次污染和资源的浪费,通过1-氨基蒽醌生产废水生产出的水煤浆分散剂能够更好地与煤进行匹配,更好的提升了其对煤的适应性和稳定性,充分利用原煤,节约原料。(The invention relates to a device for preparing coal water slurry by using 1-aminoanthraquinone production wastewater and a using method thereof, the device comprises a coal water slurry dispersing agent preparation device, a raw coal crusher, a rough grinding machine, a fine grinding machine and a gasification furnace, wherein the coal water slurry dispersing agent preparation device is composed of a reaction kettle, a heat preservation box and a dispersing agent storage box, the coal water slurry dispersing agent is produced by using the 1-aminoanthraquinone production wastewater through the coal water slurry dispersing agent preparation device, then the coal water slurry dispersing agent is fully mixed with water and coal dust to form coal water slurry, the coal water slurry is gasified through the gasification furnace, the 1-aminoanthraquinone production wastewater and DSD production wastewater resources are reused, the pollution and damage to the environment and human body are prevented, meanwhile, any treatment such as other physics, chemistry and the like is not needed, the secondary pollution and the waste of resources are not caused, the dispersing agent produced by using the, the adaptability and the stability of the coal-fired boiler to the coal are better improved, the raw coal is fully utilized, and the raw material is saved.)

1. The utility model provides an utilize device of 1-amino anthraquinone waste water preparation coal slurry, includes coal slurry dispersant preparation facilities (1), raw coal breaker (2), rough grinding machine (7), fine grinding machine (9), gasifier (5), its characterized in that: the coal water slurry dispersing agent preparation device (1) is composed of a reaction kettle (13), an insulation can (14) and a dispersing agent storage box (15), the coal water slurry dispersing agent is produced by the coal water slurry dispersing agent preparation device (1) through the 1-aminoanthraquinone production wastewater, then the coal water slurry dispersing agent is fully mixed with water and coal powder to form coal water slurry, gasification is carried out through a gasification furnace (5), resource recycling of the 1-aminoanthraquinone production wastewater and DSD production wastewater is achieved, the coal water slurry dispersing agent produced through the 1-aminoanthraquinone production wastewater can be well matched with coal, and adaptability and stability of the coal water slurry dispersing agent to the coal are better improved.

2. The device for preparing coal water slurry by using wastewater from 1-aminoanthraquinone production according to claim 1, which is characterized in that: the reactor is characterized in that a first feed hopper (17) and a second feed hopper (18) are arranged at the top of the reactor (13), a wastewater conveying pipe (16) is connected to the left end of the reactor (13), a heat insulation box (14) is connected to the bottom of the reactor (13) through a pipeline, a dripping device (19) is arranged at the top of the heat insulation box (14), and a dispersant storage box (15) is connected to the bottom of the heat insulation box (14) through a pipeline.

3. The device for preparing coal water slurry by using wastewater from 1-aminoanthraquinone production according to claim 2, which is characterized in that: dropwise add device (19) comprise fixed bolster, first constant voltage funnel (20), second constant voltage funnel (21) are all fixed on the fixed bolster, be provided with PID controller (22) on insulation can (14), insulation can (14) inside is equipped with heat preservation heating wire (23).

4. The device for preparing coal water slurry by using wastewater from 1-aminoanthraquinone production according to claim 3, which is characterized in that: all be provided with the solenoid valve on first constant voltage funnel (20), the second constant voltage funnel (21), PID controller (22) passes through the wire and connects heating wire, solenoid valve respectively.

5. The device for preparing coal water slurry by using wastewater from 1-aminoanthraquinone production according to claim 1, which is characterized in that: raw coal breaker (2) bottom is equipped with the screw feed ware, screw feed ware other end fixedly connected with storage hopper (3), storage hopper (3) bottom is equipped with the conveyer belt, the conveyer belt bottom is equipped with branch hopper (6), divide hopper (6) one end to connect rough mill (7), rough mill (7) output has buffer tank (8) through the pipe connection, buffer tank (8) one end is connected with delivery pump (4), delivery pump (4) are through pipe connection gasifier (5), it is connected with the inlet channel to divide hopper (6) bottom.

6. The device for preparing coal water slurry by using wastewater from 1-aminoanthraquinone production according to claim 4, which is characterized in that: the utility model discloses a fine slurry tank, including buffer tank (4), fine grinding machine (9), fine grinding machine (4) other end, the pipeline is connected with sieve (10) that shakes soon, fine grinding machine (9) one end has fine pulp jar (11) through the pipeline, the pipeline is connected with thick slurry tank (12) through the fine grinding machine (9) other end, just sieve (10) that shakes soon is connected through the pipeline respectively to fine pulp jar (11), divide hopper (6) bottom to pass through pipeline connection fine pulp jar (11), the pipeline is connected inlet channel through the sieve (10) top that shakes soon.

7. The device for preparing coal water slurry by using wastewater from 1-aminoanthraquinone production according to claim 1, which is characterized in that: divide hopper (6) inside to be equipped with the filter screen, sieve (10) shakes soon and separates the large granule buggy that hopper (6) department transported and come, in the less entering thin thick liquid jar (11) of granule, flow into in buffer tank (8) through the pipeline, the great transportation of granule is to in thick liquid jar (12), then flow into thin thick liquid jar (11) inside after further smashing through fine grinding machine (9), flow into in buffer tank (8) through the pipeline at last, can be abundant smash the raw coal, make full use of raw coal, both practiced thrift the raw materials, the quality of shaping back coal slurry has been guaranteed again.

8. The use method of the device for preparing coal water slurry by using wastewater from 1-aminoanthraquinone production according to claims 1-8, which is characterized in that: the method comprises the following steps:

step one, adding the production wastewater, a sulfonating agent, phenol, water and sodium hydroxide into a reaction kettle (1), dissolving, stirring and mixing uniformly, crushing raw coal by a raw coal crusher (2), conveying the crushed raw coal into a material distribution hopper (6), and grinding coal powder by a rough grinding machine (7);

step two, dropwise adding acetone into the heat preservation box through a dropwise adding device (19) for sulfonation reaction, wherein the acetone dropwise adding time is 20-50min, the dropwise adding temperature is 20-56 ℃, dropwise adding a formaldehyde solution is started after the sulfonation reaction is finished, the formaldehyde dropwise adding time is 1.5-5h, and the temperature after the dropwise adding is not more than 96 ℃;

step three, after the dropwise adding is finished, preserving heat for 1.5-5h, preserving the heat at 90-96 ℃, then adding the sodium lignosulfonate, and continuing preserving the heat;

step four, obtaining the coal water slurry dispersing agent after heat preservation is finished, and transporting the obtained coal water slurry dispersing agent to a dispersing agent storage tank (15);

introducing water to the output end of the rough grinding machine (7) through a water inlet pipeline, and fully mixing the pulverized coal obtained after rough grinding with a coal water slurry dispersing agent and the water in a buffer tank (8) to form coal water slurry;

Sixthly, conveying the coal water slurry obtained after full mixing to the inside of a gasification furnace (5) by using a conveying pump (4) for gasification to obtain gas;

and seventhly, grinding the large-particle coal powder left after coarse grinding by the coarse grinding machine (7) again by the fine grinding machine (9) for recycling.

Technical Field

The invention relates to a device for preparing coal water slurry by utilizing 1-aminoanthraquinone production wastewater and a using method thereof, belonging to the field of chemical equipment.

Background

Coal water slurry CWS (coalwater slurry), also called CWM (coalwater slurry), is a solid-liquid dispersion system composed of 60-70% of coal, about 30% of water and about 1% of additives. The coal-water mixture is a thermodynamically unstable system, and is very easy to form an agglomeration structure, so that limited water is wrapped in the agglomeration structure to increase the viscosity of the system and deteriorate the fluidity. The dispersant can change the surface property of the coal particles through the adsorption on the surfaces of the coal particles, so that the water bound in the coal particles is dissociated, and the stability and rheological property of the suspension system are improved. The coal water slurry dispersing agent refers to a surfactant added into the coal water slurry. Can make coal particles stably disperse in water, and does not generate layering and precipitation for a long time. Commonly used surfactants include sulfonate ionic surfactants (e.g., lignosulfonate tea sulfonate, alkenyl sulfonate, etc.), polyoxyethylene nonionic surfactants, water-soluble high molecular polymers, and anionic surfactant and nonionic surfactant combinations. The dispersant is the key for preparing excellent water-coal-slurry. At present, the coal water slurry dispersing agent mainly comprises the following types: high condensation degree naphthalene sulfonic acid condensation compound, acrylic acid and other acrylic acid monomer copolymerization, polyolefin series, lignosulfonate, humate and sulfonated humate series, carboxylate and phosphate series and nonionic dispersant. The polycarboxylic acid series polymer additive has a flexible structure, can change the molecular weight and the molecular structure according to actual needs, and has a wide application range. In the past, the coal water slurry dispersing agent mostly adopts anionic type and nonionic type. Currently, the coal water slurry dispersants for industrial application mainly comprise naphthalene series, humic acid series, lignin series, acrylic acid series and related compound products. Although the naphthalene dispersant has low price, good dispersibility and strong viscosity reduction effect, the naphthalene dispersant is easy to generate hard precipitation by water separation. The lignosulfonate has poor performance and is generally compounded with other dispersants for use. The humic acid dispersant has the problems of high pulping viscosity and large addition amount, and other nonionic dispersants are high in efficiency, but high in price and high in pulping cost. The polycarboxylic acid dispersant has a flexible structure, can change the molecular weight and the molecular structure according to actual requirements, has a good dispersing effect on coal water slurry, but the polycarboxylic acid dispersant used at present is expensive. The applicant finds that the 1-aminoanthraquinone or DSD acid production wastewater is used for modifying an aminosulfonic acid formaldehyde condensate or a sulfonated acetone formaldehyde condensate, so that the dispersing effect of the aminosulfonic acid formaldehyde condensate or sulfonated acetone formaldehyde condensate as a coal water slurry dispersing agent can be improved. However, the applicant finds that when the product is applied to the field of coal water slurry, the adaptability of the product to coal is not ideal enough, most of the dropping in the production process of the coal water slurry dispersing agent needs manual operation or care, so that the production efficiency is low, the labor intensity is high, and meanwhile, the raw coal is not sufficiently utilized in the existing production process of the coal water slurry, so that the cost is high.

Disclosure of Invention

The invention aims to provide a device for preparing coal water slurry by utilizing 1-aminoanthraquinone production wastewater and a using method thereof, wherein the device comprises a first step of recycling the 1-aminoanthraquinone production wastewater and DSD production wastewater, so that the pollution and damage to the environment and human bodies are prevented, and meanwhile, the 1-aminoanthraquinone production wastewater and the DSD production wastewater are not required to be subjected to any treatment such as other physical treatment, chemical treatment and the like, so that the 1-aminoanthraquinone production wastewater and the DSD production wastewater can be directly recycled, the energy consumption is saved, and the secondary pollution and the; the invention aims to utilize sodium sulfite and acetone in the 1-aminoanthraquinone production wastewater and the DSD acid production wastewater to carry out sulfonation reaction, and then obtain aliphatic water reducing agents or water-coal-slurry dispersing agents with different polymerization degrees through formaldehyde condensation, and simultaneously reduce the production cost of the water reducing agents or the dispersing agents; the third purpose of the invention is to utilize organic matters such as 2-sulfonic anthraquinone, 2, 6-disulfonic anthraquinone, 2-methyl, 5-nitrobenzenesulfonic acid, 4-dinitrostilbene-2, 2-disulfonic acid and the like in the 1-aminoanthraquinone production wastewater and the DSD acid production wastewater and sulfonating agents to carry out graft copolymerization on the residual part after the reaction with acetone and molecules participating in preliminary polymerization with formaldehyde and the sodium lignosulphonate, so as to obtain a new product containing more active groups. Hydrophilic groups such as sulfonic acid group, hydroxyl group and phenolic hydroxyl group, hydrophobic groups such as anthraquinone, benzene ring and methyl group and active groups in the sodium lignosulphonate act simultaneously, a stable bridge is formed between cement particles and water or between coal and water, and the water reducing effect and the dispersing effect are enhanced; the invention aims to utilize organic matters in the 1-aminoanthraquinone production wastewater and the DSD acid production wastewater to generate more heat and gas in the process of burning or gasifying the coal water slurry; the fifth purpose of the invention is to graft and modify the product by adding the sodium lignosulphonate, so that the air entraining effect of the product is improved, when the modified lignosulphonate is applied to the coal water slurry dispersant, more active groups are introduced, and the modified lignosulphonate can be better matched with coal according to the similarity and intermiscibility principle, so that the adaptability and stability of the modified lignosulphonate to the coal are better improved; the sixth purpose of the invention is to sort the raw coal particles crushed by the raw coal crusher and the coarse grinder through the material separating hopper and the rotary vibrating screen, so as to ensure that the completely crushed coal powder is mixed with water and the dispersing agent, thereby improving the quality of the formed coal water slurry, further refining and crushing the sorted larger-particle coal through the fine grinder, fully utilizing the raw coal, saving the raw materials, ensuring the complete crushing of the coal powder, further ensuring the quality of the formed coal water slurry, and effectively solving the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme:

a device for preparing coal water slurry by using 1-aminoanthraquinone production wastewater comprises a coal water slurry dispersing agent preparation device, a raw coal crusher, a rough mill, a fine mill and a gasification furnace, wherein the coal water slurry dispersing agent preparation device is composed of a reaction kettle, a heat preservation box and a dispersing agent storage box, the coal water slurry dispersing agent is produced by using the 1-aminoanthraquinone production wastewater through the coal water slurry dispersing agent preparation device, then the coal water slurry dispersing agent is fully mixed with water and coal powder to form coal water slurry, and the coal water slurry is gasified through the gasification furnace, so that the resource recycling of the 1-aminoanthraquinone production wastewater and the DSD production wastewater is realized, the pollution and the damage to the environment and the human body are prevented, meanwhile, the coal water slurry dispersing agent produced by using the 1-aminoanthraquinone production wastewater can be better matched with coal without any treatment of other physics, the coal water slurry dispersing agent can be directly recycled, the energy consumption is saved, the adaptability and stability of the coal-burning coal.

According to the invention, a first feed hopper and a second feed hopper are arranged at the top of the reaction kettle, the left end of the reaction kettle is connected with a wastewater conveying pipe, the bottom of the reaction kettle is connected with a heat preservation box through a pipeline, a dropwise adding device is arranged at the top of the heat preservation box, and the bottom of the heat preservation box is connected with a dispersing agent storage box through a pipeline.

In the invention, the dripping device consists of a fixed bracket, a first constant pressure funnel and a second constant pressure funnel, wherein the first constant pressure funnel and the second constant pressure funnel are both fixed on the fixed bracket, the heat preservation box is provided with a PID (proportion integration differentiation) controller, and a heat preservation electric heating wire is arranged in the heat preservation box.

In the invention, the first constant pressure funnel and the second constant pressure funnel are both provided with electromagnetic valves, and the PID controller is respectively connected with the electric heating wire and the electromagnetic valve through leads.

According to the invention, a spiral feeder is arranged at the bottom of the raw coal crusher, a storage hopper is fixedly connected to the other end of the spiral feeder, a conveying belt is arranged at the bottom of the storage hopper, a material distributing hopper is arranged at the bottom of the conveying belt, one end of the material distributing hopper is connected with a rough grinding machine, the output end of the rough grinding machine is connected with a buffer tank through a pipeline, one end of the buffer tank is connected with a conveying pump, the conveying pump is connected with a gasification furnace through a pipeline, and the bottom of the material distributing hopper is.

In the invention, the other end of the buffer tank is connected with a rotary vibration sieve through a pipeline, one end of the fine grinding machine is connected with a fine pulp tank through a pipeline, the other end of the fine grinding machine is connected with a coarse pulp tank through a pipeline, the fine pulp tank and the coarse pulp tank are respectively connected with the rotary vibration sieve through pipelines, the bottom of the material separating hopper is connected with the fine pulp tank through a pipeline, and the top of the rotary vibration sieve is connected with a water inlet pipeline through a pipeline.

According to the invention, the filter screen is arranged in the material distribution hopper, the rotary vibration screen is used for sorting large-particle coal powder conveyed from the material distribution hopper, the small particles enter the fine slurry tank and flow into the buffer tank through the pipeline, the large particles are conveyed into the coarse slurry tank and further crushed by the fine mill and flow into the fine slurry tank, and finally flow into the buffer tank through the pipeline, so that the raw coal can be fully crushed, the raw coal is fully utilized, the raw material is saved, and the quality of the formed coal water slurry is ensured.

A use method of a device for preparing coal water slurry by using 1-aminoanthraquinone production wastewater comprises the following steps:

step one, adding the production wastewater, a sulfonating agent, phenol, water and sodium hydroxide into a reaction kettle, dissolving, stirring and mixing uniformly, crushing raw coal by a raw coal crusher, conveying the crushed raw coal into a material distribution hopper, and grinding coal powder by a coarse grinding machine;

step two, dropwise adding acetone into the heat preservation box through a dropwise adding device to perform sulfonation reaction, wherein the acetone dropwise adding time is 20-50min, the dropwise adding temperature is 20-56 ℃, dropwise adding a formaldehyde solution is started after the sulfonation reaction is finished, the formaldehyde dropwise adding time is 1.5-5h, and the temperature after the dropwise adding is not more than 96 ℃;

Step three, after the dropwise adding is finished, preserving heat for 1.5-5h, preserving the heat at 90-96 ℃, then adding the sodium lignosulfonate, and continuing preserving the heat;

step four, obtaining the coal water slurry dispersing agent after heat preservation is finished, and transporting the obtained coal water slurry dispersing agent into a dispersing agent storage tank;

introducing water to the output end of the rough grinding machine through a water inlet pipeline, and fully mixing the pulverized coal obtained after rough grinding, the coal water slurry dispersing agent and the water in a buffer tank to form coal water slurry;

conveying the coal water slurry obtained after full mixing to the inside of a gasification furnace by using a conveying pump for gasification to obtain gas;

and seventhly, grinding the large-particle coal powder left after coarse grinding by the coarse grinding machine again by the fine grinding machine for recycling.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention realizes the reutilization of the 1-aminoanthraquinone and DSD acid production wastewater, prevents the wastewater from polluting and damaging the environment and human body, does not need to be subjected to other physical and chemical treatments, can be directly recycled, saves energy consumption, has simple production reaction conditions, is easy to control, does not discharge three wastes, utilizes the sodium sulfite and acetone in the 1-aminoanthraquinone production wastewater and the DSD acid production wastewater to carry out sulfonation reaction, then obtains the coal water slurry dispersing agents with different polymerization degrees by controlling the reaction conditions, reduces the production cost of the dispersing agents, utilizes the 2-sulfonic anthraquinone, 2, 6-disulfonic acid anthraquinone, 2-methyl, 5-nitrobenzenesulfonic acid, 4-dinitrostilbene-2 in the 1-aminoanthraquinone production wastewater and the DSD acid production wastewater in a grafting modification mode, 2, hydrophilic groups of sulfonic acid groups of organic matters such as-disulfonic acid and the like, hydrophobic groups of anthraquinone and active groups in the sodium lignosulphonate form a stable bridge between coal and water, so that the dispersion effect is enhanced, the application of the water-coal-slurry dispersing agent can increase the adaptability and stability of the water-coal-slurry dispersing agent, and more heat and gas are generated by using the organic matters in the wastewater from 1-aminoanthraquinone production and the wastewater from DSD acid production in the combustion or gasification process of the water-coal-slurry.

2. The first constant pressure funnel and the second constant pressure funnel are respectively used for dripping acetone and formaldehyde, electromagnetic valves on the first constant pressure funnel and the second constant pressure funnel are controlled by a PID controller, a temperature sensor connected with the controller is further arranged in the heat preservation box, the heating power of a heat preservation heating wire is controlled according to the signal of the temperature sensor, the automatic control of opening and closing of the first constant pressure funnel and the second constant pressure funnel is realized, manual operation is not needed, the use is more convenient, raw coal particles crushed by a raw coal crusher and a rough grinding machine are sorted by a sorting hopper and a rotary vibrating screen, the completely crushed coal powder is guaranteed to be mixed with water and a dispersing agent, the quality of the formed coal water slurry is improved, the coal with larger particles after sorting is further refined and crushed by a fine grinding machine, the raw coal is fully utilized, and raw materials are saved, the complete pulverization of the coal powder is ensured, and the quality of the formed coal water slurry is further ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a connection structure diagram of a device for preparing coal water slurry by using 1-aminoanthraquinone production wastewater.

FIG. 2 is a schematic diagram of a device for preparing a coal water slurry dispersing agent by using wastewater from 1-aminoanthraquinone production.

FIG. 3 is a structural diagram of an incubator of a device for preparing coal water slurry by using wastewater from 1-aminoanthraquinone production.

Reference numbers in the figures: 1. a coal water slurry dispersant preparation device; 2. a raw coal crusher; 3. a storage hopper; 4. a delivery pump; 5. a gasification furnace; 6. a distributing hopper; 7. a rough grinding machine; 8. a buffer tank; 9. a fine grinding machine; 10. rotating and vibrating the screen; 11. a fine pulp tank; 12. a coarse sizing tank; 13. a reaction kettle; 14. a heat preservation box; 15. a dispersant storage tank; 16. a waste water conveying pipe; 17. a first feed hopper; 18. a second feed hopper; 19. a dropping device; 20. a first constant pressure funnel; 21. a second constant pressure funnel; 22. a PID controller; 23. the heat preservation electric heating wire.

Detailed Description

The present invention will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting, wherein certain elements may be omitted, enlarged or reduced in size, and are not intended to represent the actual dimensions of the product, so as to better illustrate the detailed description of the invention.

In the following examples, aliphatic water reducing agents (hereinafter referred to as "conventional ZFA") and sulfamic acid-based formaldehyde condensates (hereinafter referred to as "conventional AJ") produced by Anhuxin environmental protection technology Co., Ltd were used for comparative tests.

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 are as follows: firstly, a power supply of the experimental instrument is connected, and the level is adjusted and the zero is automatically adjusted. And secondly, putting the same amount of sample in a 150ml beaker to ensure the temperature and the quality of the measured sample. The beaker is placed under the instrument, the rotor is brought into the sample until the scale mark on the rotor, and the start key is pressed to start the test. Measuring the viscosity of the sample by using a 62# rotor at the speed of 20 parts of the shearing speed. The viscosity comparison must be carried out under the same instrument, rotor, speed, vessel, 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 is smooth and seamless, as shown in figure 2. b. Glass plates (400X 400mm, thickness 5 mm); c. straight steel rule, (300mm) d.

2. The experimental procedure is that the glass plate is placed in a horizontal position, and the surface of the glass plate, the truncated cone round die, the stirrer and the stirring pot are wetted by the wet cloth without water stain. And secondly, placing the truncated cone round die in the center of the glass plate and covering the truncated cone round die with wet cloth for later use. Thirdly, the coal water slurry is quickly injected into the truncated cone circular mold, the truncated cone circular mold is scraped by a scraper, the coal water slurry is lifted vertically to flow on the glass plate until the coal water slurry does not flow, the maximum diameters of two mutually vertical directions of the flowing part are measured by a ruler, and the average value is taken 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:

experimental apparatus, 150ml beaker, electronic balance, preservative film, 300mm ruler, timer.

Experimental procedure 150g of coal water slurry was weighed into a 150ml beaker, completely sealed with a sealing film, left at room temperature, and the depth (H1 and H2) of a 10 × 200mm glass rod was measured at 10s for 5 minutes and the actual depth (H) was measured simultaneously over 24 hours to calculate the soft precipitation rate and the hard precipitation rate according to the following equation. Soft precipitation rate = (H-H1)/H × 100%, and hard precipitation rate = (H-H2)/H × 100%

The method for detecting the granularity of the coal water slurry comprises the following steps:

1. The experimental instrument was an LS100Q laser particle size analyzer.

2. The working principle is as follows: scattering theory of light by particles it is well known that light is a cell wave that interacts with particles as they encounter them during propagation, some of which will deviate from the original direction of travel, called scattering. The working principle of the instrument, namely the laser particle analyzer, comprises a measuring unit, a sample cell, a computer and a printer. The measuring unit is the core of the instrument and is responsible for emission of laser, photoelectric conversion of scattered signals, preprocessing of photoelectric signals and A/D conversion. The circulating sample cell is used for conveying a sample to be measured to a measuring area of the measuring unit. The computer is used for processing the photoelectric signals, converting the energy distribution of scattered light into the particle size distribution of the sample and forming a test report, and the printer is used for outputting a hard copy of the test report, namely printing the test report.

3. Operating procedures

Test unit preheating

The main switch of the instrument power supply is turned on, and the laser power can be stabilized after at least half an hour. If the environmental temperature of the laboratory is low, the preheating time needs to be prolonged properly. (if repeat test, this step can be skipped)

② opening the test software of LS100Q

a, controlling a tab-selecting automatic cleaning (the step can be manually operated on a water bath box); b, setting the rotating speed of the pump: setting the intensity and time of ultrasound if necessary, adding a proper amount of dispersion medium (usually distilled water) into a 20ml beaker; c, turning on a pump (which can also be carried out on a water bath tank) in software, measuring an option card, manually setting, and measuring a display window; d, option bar: selecting test contents in a measurement option window; column for substance e: setting optical characteristics, selecting correct sample substance names and dispersing agent names, and inputting test sample numbers or names; f, calculating the result: selecting model tab-general-determine; g, measurement column: setting pump speed, ultrasonic time and intensity and test content in a measurement tab, and testing a background value before first measurement; and h, clicking the start of the measurement display window, slowly adding the sample by using a disposable dropper, and starting to measure the sample when the laser shading degree is within a set range (8% -12%). a, controlling a tab-selecting automatic cleaning (the step can be manually operated on a water bath box); b, setting the rotating speed of the pump: setting the intensity and time of ultrasound if necessary, adding a proper amount of dispersion medium (usually distilled water) into a 20ml beaker; c, turning on a pump (which can also be carried out on a water bath tank) in software, measuring an option card, manually setting, and measuring a display window; d, option bar: selecting test contents in a measurement option window; column for substance e: setting optical characteristics, selecting correct sample substance names and dispersing agent names, and inputting test sample numbers or names; f, calculating the result: selecting model tab-general-determine; g, measurement column: setting pump speed, ultrasonic time and intensity and test content in a measurement tab, and testing a background value before first measurement; and h, clicking the start of the measurement display window, slowly adding the sample by using a disposable dropper, and starting to measure the sample when the laser shading degree is within a set range (8% -12%).

In the invention, organic matters such as 2-sulfonic anthraquinone, 2, 6-disulfonic anthraquinone, 2-methyl, 5-nitrobenzenesulfonic acid, 4-dinitrostilbene-2, 2-disulfonic acid and the like in the 1-aminoanthraquinone production wastewater and the DSD acid production wastewater and sulfonating agents are subjected to graft copolymerization with the residual part after the reaction with acetone and molecules participating in preliminary polymerization with formaldehyde and the sodium lignosulfonate to obtain a new product containing more active groups. Hydrophilic groups such as sulfonic acid group, hydroxyl group and phenolic hydroxyl group, hydrophobic groups such as anthraquinone, benzene ring and methyl group and active groups in the sodium lignosulphonate act simultaneously, a stable bridge is formed between cement particles and water or between coal and water, and the water reducing effect and the dispersing effect are enhanced.

In the invention, the sodium lignosulphonate can be one or two of solid or liquid, and the pure sodium lignosulphonate accounts for 1-30% of the total mass of the material.

The sulfonating agent in the invention is one or more of sodium sulfite, sodium metabisulfite, sodium bisulfite, sulfanilic acid and SO 3.

The sodium hydroxide in the invention is: one or more of liquid sodium hydroxide and solid sodium hydroxide is added to ensure that the pH value of the material is 7-10.

In the invention, phenol accounts for 0-10.5% of the total mass of the material.

In the invention, the acetone accounts for 0-12% of the total mass of the material.

The ratio of the mass of the formaldehyde solution to the total amount of phenol and acetone in the invention is 1.4: 1-3:1.

The sulfonation heat preservation time is 0-1.5h, and the temperature is 20-60 ℃.