Sulfonation reaction system for preparing coal water slurry additive

Abstract

The invention provides a sulfonation reaction system for preparing a coal water slurry additive, which comprises: a reactor, which is internally provided with an accommodating cavity and is provided with a feed port and a discharge port communicated with the accommodating cavity; the temperature control device is arranged in the circumferential direction of the reactor; the stirring assembly comprises a driving part; the first end of the stirring shaft is in driving connection with the driving part, and the second end of the stirring shaft extends into the containing cavity; the anchor paddle is fixedly connected with the second end of the stirring shaft; the plurality of inclined blade paddles are fixedly connected with the circumferential direction of the stirring shaft at intervals in the accommodating cavity, and each inclined blade paddle is arranged in a manner of forming an included angle with a plane vertical to the stirring shaft. According to the invention, the anchor type paddle and the inclined blade paddle are matched to stir materials, the anchor type paddle is used for stirring high-viscosity materials, and the inclined blade paddle is used for enabling the materials to generate strong turbulence, so that the mixing effect and the heat transfer efficiency of the materials can be improved, the sulfonation reaction time is shortened, and the sulfonation conversion rate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sulfonation reaction, and in particular to a sulfonation reaction system for preparing a water-coal slurry additive. Background Art

[0002] Coal-water slurry is a new type of coal-based liquid fuel with good combustion characteristics and environmental advantages. In the process of preparing coal-water slurry, various additives need to be added to improve its fluidity, stability and combustion performance. Sulfonation reaction is one of the key steps in preparing coal-water slurry additives, but because the reaction system usually has the characteristics of high viscosity, high heat release and easy polymerization, traditional reaction equipment has problems such as poor material mixing effect and low heat transfer efficiency, resulting in long sulfonation reaction time and low product conversion rate. Summary of the invention

[0003] In view of this, the present invention provides a sulfonation reaction system for preparing a water-coal slurry additive to solve the above technical problems.

[0004] The sulfonation reaction system for preparing a coal water slurry additive provided by the present invention comprises:

[0005] A reactor, wherein a containing cavity is provided in the reactor, and a feed inlet and a discharge port communicating with the containing cavity are provided;

[0006] A temperature control device, the temperature control device is arranged around the reactor;

[0007] A stirring assembly, the stirring assembly comprising:

[0008] Driving parts;

[0009] A stirring shaft, wherein a first end of the stirring shaft is drivingly connected to the driving member, and a second end of the stirring shaft extends into the accommodating cavity;

[0010] An anchor paddle, the anchor paddle being fixedly connected to the second end of the stirring shaft;

[0011] A plurality of pitched-blade paddles are fixedly connected to the stirring shaft at circumferential intervals in the accommodating chamber, and each of the pitched-blade paddles is arranged at an angle to a plane perpendicular to the stirring shaft.

[0012] Optionally, a plurality of stirring rods are fixed at intervals at opposite ends of the pitch-blade paddle.

[0013] Optionally, arc-shaped grooves and protrusions are alternately arranged on the anchor paddle.

[0014] Optionally, the interval between adjacent grooves and protrusions is 8-12 mm.

[0015] Optionally, the arc radius range of the groove and the protrusion is 2-6 mm.

[0016] Optionally, the angle between the pitch-blade paddle and a plane perpendicular to the stirring shaft is in the range of 30-50°.

[0017] Optionally, the stirring assembly further comprises: a support plate, wherein opposite ends of the support plate are respectively connected to the stirring shaft and the anchor paddle.

[0018] Optionally, the sulfonation reaction system for preparing a water-coal slurry additive further comprises an online detection component, and the online detection component comprises:

[0019] an output pipe, the output pipe passes through the reactor and communicates with the accommodating chamber, and a first regulating valve is installed on the output pipe;

[0020] A mixing tube, the mixing tube is connected to the output tube, and a second regulating valve is installed on the mixing tube;

[0021] a cooler, wherein an inlet of the cooler is connected to an outlet of the output pipe;

[0022] An online detector, wherein the sample inlet of the online detector is connected to the outlet of the cooler.

[0023] Optionally, the online detection component further includes: a static mixer, wherein the inlet of the static mixer is connected to the outlet of the cooler, and the outlet of the static mixer is connected to the sample inlet of the online detector.

[0024] Optionally, the online detection component further includes:

[0025] A sample tank, wherein the sample tank is provided with a liquid inlet, a liquid outlet and a liquid drain, the liquid inlet is connected to the outlet of the static mixer through a first connecting pipe, the liquid outlet is connected to the sample inlet of the online detector through a second connecting pipe, a liquid outlet valve is installed on the second connecting pipe, the liquid drain is connected to a liquid drain pipe, and a liquid drain valve is installed on the liquid drain pipe;

[0026] A pH detector is installed on the first connecting tube.

[0027] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects:

[0028] The sulfonation reaction system for preparing a water-coal slurry additive of the present invention utilizes an anchor paddle and a pitched-blade paddle to stir materials. The anchor paddle is used to stir high-viscosity materials, and the pitched-blade paddle is used to make the materials produce strong turbulence, which can improve the mixing effect and heat transfer efficiency of the materials, thereby shortening the sulfonation reaction time and improving the sulfonation conversion rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a sulfonation reaction system for preparing a coal water slurry additive according to an embodiment of the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of grooves and protrusions on the surface of an anchor paddle in a sulfonation reaction system for preparing a water-coal slurry additive is shown;

[0031] Figure 3 This is a schematic diagram of a sulfonation reaction system for preparing a coal water slurry additive according to another embodiment of the present invention.

[0032] Reference numerals:

[0033] 1: reactor; 11: main body; 12: top cover; 13: end cap; 2: temperature control device; 21: medium inlet; 22: medium outlet; 3: stirring assembly; 31: driving member; 32: stirring shaft; 33: anchor paddle; 331: groove; 332: protrusion; 34: inclined blade paddle; 35: stirring rod; 36: support plate; 4: online detection assembly; 41: output pipe; 42: mixing pipe; 43: cooler; 44: online detector; 45: first regulating valve; 46: second regulating valve; 47: static mixer; 48: sample tank; 49: pH detector; 410: first connecting pipe; 411: second connecting pipe; 412: liquid outlet valve; 413: drain pipe; 414: drain valve. DETAILED DESCRIPTION

[0034] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0035] Figure 1 FIG. 1 is a schematic diagram of a sulfonation reaction system for preparing a coal water slurry additive according to an embodiment of the present invention. Figure 1As shown, the sulfonation reaction system for preparing water-coal slurry additives includes a reactor 1, a temperature control device 2 and a stirring assembly 3. A containing cavity is provided in the reactor 1, and a feed port and a discharge port connected to the containing cavity are provided; the temperature control device 2 is arranged around the reactor 1; the stirring assembly 3 includes a driving member 31, a stirring shaft 32, an anchor paddle 33 and a plurality of inclined blade paddles 34. The first end of the stirring shaft 32 is drivingly connected to the driving member 31, and the second end of the stirring shaft 32 extends into the containing cavity; the anchor paddle 33 is fixedly connected to the second end of the stirring shaft 32; a plurality of inclined blade paddles 34 are fixedly connected to the stirring shaft 32 at intervals in the circumferential direction in the containing cavity, and each inclined blade paddle 34 is arranged at an angle to a plane perpendicular to the stirring shaft 32.

[0036] When in use, the reaction raw materials are transported to the reactor 1 through the feed port, and the driving member 31 is started, so that the driving member 31 drives the stirring shaft 32 to rotate, and then drives the anchor paddle 33 and multiple inclined blade paddles 34 connected to the stirring shaft 32 to rotate synchronously, the anchor paddle 33 is used to stir high-viscosity materials, and the inclined blade paddle 34 is used to make the materials produce strong turbulence, improve the mixing effect and heat transfer efficiency of the materials, and promote the reaction. At the beginning of the reaction, the temperature of the material is room temperature. In order to make the material reach a temperature suitable for the sulfonation reaction, it is necessary to use the temperature control device 2 to heat the reactor 1 to increase the temperature in the reactor 1; after the reaction is carried out for a period of time, it is violently exothermic. At this time, the temperature in the reactor 1 is too high, and it is necessary to use the temperature control device 2 to cool the reactor 1 to maintain the material in the reactor 1 within a temperature range suitable for the reaction. After the sulfonation reaction is completed, the mixed solution in the reactor is discharged and collected through the liquid outlet.

[0037] The timing for the temperature control device 2 to heat or cool the reactor 1 can be adjusted according to work experience by calculating the duration of the reaction process. A thermometer can also be set on the reactor 1 to monitor the temperature data of the material in the reactor 1 in real time. When the temperature data shows that it is lower than the set low value, the temperature control device 2 is adjusted to heat the reactor 1. When the temperature data shows that it is higher than the set high value, the temperature control device 2 is adjusted to cool the reactor 1.

[0038] The sulfonation reaction system of the present invention for preparing a water-coal slurry additive utilizes an anchor paddle 33 and a pitched-blade paddle 34 to cooperate in stirring materials. The anchor paddle 33 is used to stir high-viscosity materials, and the pitched-blade paddle 34 is used to make the materials produce strong turbulence, which can improve the mixing effect and heat transfer efficiency of the materials, thereby shortening the sulfonation reaction time and improving the sulfonation conversion rate.

[0039] like Figure 1As shown, in this embodiment, the reactor 1 adopts a vertical cylindrical design, with a smooth inner wall and a conical bottom. It is composed of a middle main body 11, a top cover 12 and a lower head 13, and the three are detachably connected to enclose a accommodating chamber for the reaction. The driving member 31, such as a motor, is arranged on the outer wall of the top of the reactor 1. The upper end of the stirring shaft 32 is connected to the driving member 31, and the lower end extends to near the bottom of the reactor 1. The bottom end of the stirring shaft 32 in the reactor 1 is fixedly connected to the center position of the anchor paddle 33, and the two ends of the anchor paddle 33 extend upward by a certain distance. There are two inclined blade paddles 34, which are fixedly connected to the circumferential interval of the stirring shaft 32, and are respectively arranged at a certain angle to the plane perpendicular to the stirring shaft 32, and are both located within the extension range of the height of the anchor paddle 33, so that the two can cooperate with each other when rotating synchronously with the stirring shaft 32 to produce a better stirring and mixing effect. The anchor propeller 33 and the pitched blade propeller 34 are made of corrosion-resistant and high-temperature resistant materials, and can be used for a long time in a high-temperature and highly corrosive environment, thereby ensuring the service life and stability of the equipment. In this embodiment, the temperature control device 2 adopts a jacket, which is arranged around the reactor 1. Figure 1 As shown, a medium inlet 21 is provided at the lower end of the jacket, and a medium outlet 22 is provided at the upper end. When the reactor 1 needs to be heated, a heating medium, such as steam, is input into the jacket through the medium inlet 21, and the steam exchanges heat with the reactor 1 in the jacket, and the cooled steam is discharged through the medium outlet 22; when the reactor 1 needs to be cooled, a cooling medium, such as cooling water, is input into the jacket through the medium inlet 21, and the cooling water exchanges heat with the reactor 1 in the jacket, and the heated cooling water is discharged through the medium outlet 22. The temperature control device 2 can both heat the reactor 1 and cool the reactor 1, thereby ensuring the uniformity and stability of the reaction temperature. The system can adapt to different reaction conditions and reaction materials, has a wide range of application prospects, is easy to operate and maintain, and can greatly improve production efficiency and product quality. According to the actual application, the length and width of the anchor paddle 33 can be adjusted and designed according to the diameter of the reactor 1 to cover the inner wall of the reactor 1 as much as possible, so as to stir as much material in the reactor 1 as possible at the same time. The number and specific inclination angle of the pitch-blade paddle 34 are adjusted according to the viscosity of the reactants to ensure that strong turbulence can be formed in high-viscosity materials.

[0040] Optionally, a plurality of stirring rods 35 are fixed at intervals at opposite ends of the pitched blade paddle 34. In this arrangement, when the pitched blade paddle 34 rotates with the stirring shaft 32 to stir the material in the reactor 1, the stirring rods 35 rotate accordingly, and also play a role in stirring and mixing the material in the reactor 1, thereby further improving the mixing degree of the material in the reactor 1 and improving the efficiency of the sulfonation reaction.

[0041] like Figure 1As shown, in this embodiment, parallel to the plane where the inclined blade paddle 34 is located, a plurality of stirring rods 35 are fixed at the edges of the opposite sides of each inclined blade paddle 34. In order to enhance the stirring and mixing effect of the material and avoid excessive resistance during the stirring process, the number of stirring rods 35 is preferably set to 8-12, and a certain interval is maintained between two adjacent stirring rods 35.

[0042] Figure 2 for Figure 1 Schematic diagram of grooves and protrusions on the surface of an anchor blade in a sulfonation reaction system for preparing a water-coal slurry additive. Figure 2 As shown, optionally, arc-shaped grooves 331 and protrusions 332 are alternately arranged on the anchor paddle 33. This arrangement, with the help of the arc-shaped grooves 331 and protrusions 332, increases the turbulence effect, which is conducive to improving the heat transfer efficiency.

[0043] like Figure 1 and Figure 2 As shown, in this embodiment, two rows of grooves 331 and protrusions 332 are arranged along the extension direction of the anchor paddle 33. The two rows are arranged parallel to each other. The grooves 331 and protrusions 332 in each row are semicircular with the same radius, and adjacent grooves 331 and protrusions 332 are arranged at equal intervals.

[0044] Optionally, the interval between adjacent grooves 331 and protrusions 332 is 8-12 mm. This arrangement can not only enhance the turbulence effect, improve the stirring and mixing effect, and improve the heat transfer efficiency by means of the grooves 331 and protrusions 332 during the rotation of the anchor paddle 33, but also prevent the protrusions 332 from being too densely arranged to generate excessive resistance during the stirring of materials. According to actual application conditions, the interval between adjacent grooves 331 and protrusions 332 can be adjusted, for example, 8 mm, 9 mm, 10 mm, 12 mm, etc.

[0045] Optionally, the arc radius of the groove 331 and the protrusion 332 is in the range of 2-6 mm. This arrangement ensures that the cooperation between the groove 331 and the protrusion 332 can increase the turbulence effect of the material, and also ensures that the material will not remain in the groove 331, and the protrusion 332 will not produce too much resistance to the stirring of the material. According to the actual application, the arc radius of the groove 331 and the protrusion 332 can be adjusted, for example, 2 mm, 4 mm, 5 mm, 6 mm, etc.

[0046] Optionally, the angle between the pitched blade paddle 34 and the plane perpendicular to the stirring shaft 32 is in the range of 30-50°. If the angle between the pitched blade paddle 34 and the plane perpendicular to the stirring shaft 32 is too large, the pitched blade paddle 34 is too upright, and the lateral stirring radius of the material is too small, and the material cannot be fully stirred; if the angle between the pitched blade paddle 34 and the plane perpendicular to the stirring shaft 32 is too small, the pitched blade paddle 34 is too close to the horizontal, and the material within the longitudinal range cannot be fully stirred, and the mixing and stirring effect cannot be fully exerted. Setting the angle to the above range takes into account the stirring range of the material in the lateral and longitudinal directions, and can give full play to the role of the pitched blade paddle 34 in mixing and stirring the material and producing a turbulent effect. According to actual application conditions, the angle between the pitched blade paddle 34 and the plane perpendicular to the stirring shaft 32 can be set to 30°, 40°, 50°, etc.

[0047] Optionally, the stirring assembly 3 further includes a support plate 36, and opposite ends of the support plate 36 are respectively connected to the stirring shaft 32 and the anchor paddle 33. The support plate 36 is provided to enhance the stable connection between the anchor paddle 33 and the stirring shaft 32, and the material can be further stirred with the support plate 36.

[0048] like Figure 1 As shown, in this embodiment, there are two support plates 36, which are arranged in mirror symmetry with respect to the stirring shaft 32. The end of each support plate 36 connected to the stirring shaft 32 is higher, and the end connected to the anchor paddle 33 is lower and inclined.

[0049] Figure 3 FIG. 1 is a schematic diagram of a sulfonation reaction system for preparing a water-coal slurry additive according to another embodiment of the present invention. Figure 3 As shown, optionally, the sulfonation reaction system for preparing a water-coal slurry additive further includes an online detection component 4, which includes an output pipe 41, a mixing pipe 42, a cooler 43 and an online detector 44. The output pipe 41 runs through the reactor 1 and is connected to the accommodating cavity, and a first regulating valve 45 is installed on the output pipe 41; the mixing pipe 42 is connected to the output pipe 41, and a second regulating valve 46 is installed on the mixing pipe 42; the inlet of the cooler 43 is connected to the outlet of the output pipe 41; and the sample inlet of the online detector 44 is connected to the outlet of the cooler 43.

[0050] After the reaction in the reactor 1 has taken place for a certain period of time, it is necessary to sample and analyze the reaction product, determine the content of the organic sulfonic acid product with the help of the online detector 44, and further calculate the sulfonation conversion rate. The mixed solution in the reactor 1 is strongly acidic and has a high temperature. If it is directly introduced into the online detector 44 for the content detection of the organic sulfonic acid, the high-temperature strong acid solution will damage the online detector 44. Therefore, when performing online detection, there is no need to shut down the reactor 1, open the first regulating valve 45 and the second regulating valve 46, then the high-temperature strong acid mixed solution in the reactor 1 enters the output pipe 41, and at the same time, an alkaline solution, such as a 32% NaOH aqueous solution, is input into the mixing pipe 42, and the alkaline solution is transported to the output pipe 41 to mix with the high-temperature strong acid mixed solution, acid and alkali neutralization, and the neutralized mixed solution is transported to the cooler 43 for cooling, and the neutralized mixed solution after cooling is transported to the online detector 44 as a sample for detection. According to the actual application, the cooler 43 can be selected from any commercially available specifications and models, as long as the neutralized mixed solution can be cooled to a suitable temperature. The online detector 44 can be any detection device capable of detecting the content of the organic sulfonic acid product, such as an infrared spectrometer. After multiple detections, when the detection result of the online detector 44 remains substantially unchanged, it means that the sulfonation reaction in the reactor 1 has been completed, and the reaction solution can be discharged from the reactor 1.

[0051] Optionally, the online detection component 4 further includes a static mixer 47, the inlet of the static mixer 47 is connected to the outlet of the cooler 43, and the outlet of the static mixer 47 is connected to the sample inlet of the online detector 44. In this arrangement, the acidic mixed solution in the output pipe 41 is mixed with the alkaline solution input from the mixing pipe 42, and after cooling by the cooler 43, it enters the static mixer 47 for mixing again, so that the acid and alkali solutions are fully mixed and fully neutralized. According to the actual application, the static mixer 47 can be selected from any commercially available specifications and models that meet the mixing of acid and alkali solutions.

[0052] Optionally, the online detection component 4 further includes a sample tank 48 and a pH detector 49. The sample tank 48 is provided with a liquid inlet, a liquid outlet and a liquid discharge port. The liquid inlet is connected to the outlet of the static mixer 47 through a first connecting pipe 410, and the liquid outlet is connected to the sample inlet of the online detector 44 through a second connecting pipe 411. A liquid outlet valve 412 is installed on the second connecting pipe 411. The liquid discharge port is connected to a liquid discharge pipe 413, and a liquid discharge valve 414 is installed on the liquid discharge pipe 413. The pH detector 49 is installed on the first connecting pipe 410. Before the solution enters the online detector 44, the pH value is first tested to determine the degree of acid-base neutralization to prevent insufficient neutralization from causing the acidic solution to directly enter the online detector 44.

[0053] When the reaction product needs to be sampled and analyzed, the liquid outlet valve 412 and the drain valve 414 are closed, and the first regulating valve 45 and the second regulating valve 46 are opened. Then, the strong acid high temperature mixed solution discharged from the reactor 1 is mixed with the alkaline solution input into the mixing tube 42 in the output pipe 41 and a neutralization reaction occurs. The neutralized mixed solution enters the cooler 43 for cooling. The cooled mixed solution enters the static mixer 47 for further mixing and neutralization. The mixed solution output by the static mixer 47 is transported to the sample tank 48 through the first connecting pipe 410. When the mixed solution flows through the first connecting pipe 410, the pH detector 49 detects the acidity and alkalinity of the mixed solution. When the pH detection result shows that the mixed solution is still acidic and corrosive, the opening of the first regulating valve 45 is appropriately reduced, and the opening of the second regulating valve 46 is increased. When the pH test result shows that the mixed solution is neutral or alkaline, the mixed solution will not corrode the online detector 44. The drain valve 414 is opened to drain the solution in the sample tank 48. Then, the drain valve 414 is closed and the outlet valve 412 is opened. The low-temperature neutral or alkaline mixed solution transported to the sample tank 48 is transported to the online detector 44 via the second connecting pipe 411. The organic sulfonic acid content in the mixed solution is determined by the online detector 44, and the sulfonation conversion rate is further calculated.

[0054] The technical solution of the present invention and its effects are further described below through specific embodiments:

[0055] Reactor: 3m 3 Vertical cylindrical design with smooth inner wall and tapered bottom to reduce material accumulation.

[0056] Temperature control device: A jacket is selected, which is arranged on the outside circumference of the reactor and is used to pass cooling medium or heating medium. The jacket material is stainless steel, which has good corrosion resistance and heat transfer performance.

[0057] Driving device: A motor is selected and installed on the top of the reactor, with an adjustable speed, to drive the stirring shaft to rotate.

[0058] An equal amount of reaction materials (water-coal slurry additive raw materials) were added to each reactor, and the initial temperature of the materials was room temperature. At the beginning of the reaction, steam was injected into the jacket to adjust the temperature in the reactor to 80°C to reach the reaction starting temperature. After the reaction was violently exothermic, cooling water was injected into the jacket to control the reaction temperature to be maintained at 80°C.

[0059] Example 1

[0060] Only the anchor paddle was installed on the stirring shaft, and the motor was started to drive the stirring shaft and the anchor paddle to rotate at a speed of 300 rpm to ensure that the reaction materials were fully mixed. After 2 hours of reaction, the product was sampled and analyzed, and the sulfonation conversion rate was measured to be 88%, the power consumption was 10.8 KW, the steam consumption was 120 kg / h, and the circulating cooling water consumption was 5000 kg / h.

[0061] Example 2

[0062] Anchor paddles and pitched blade paddles were installed on the stirring shaft, and the motor was started to drive the stirring shaft, anchor paddles and pitched blade paddles to rotate at a speed of 285 rpm to ensure that the reaction materials were fully mixed. After 2 hours of reaction, the product was sampled and analyzed, and the sulfonation conversion rate was measured to be 91%, the power consumption was 10.7 KW, the steam consumption was 110 kg / h, and the circulating cooling water consumption was 4700 kg / h.

[0063] Example 3

[0064] An anchor paddle and a pitched blade paddle are installed on the stirring shaft, and a plurality of stirring rods are fixed at opposite ends of the pitched blade paddle. The motor is started to drive the stirring shaft, the anchor paddle, the pitched blade paddle and the stirring rod to rotate at a speed of 283 rpm to ensure that the reaction materials are fully mixed. After 2 hours of reaction, the product is sampled and analyzed, and the sulfonation conversion rate is measured to be 93%, the power consumption is 10.8 KW, the steam consumption is 102 kg / h, and the circulating cooling water consumption is 4300 kg / h.

[0065] Example 4

[0066] An anchor paddle and a pitched blade paddle are installed on the stirring shaft. A plurality of stirring rods are fixed at opposite ends of the pitched blade paddle, and arc-shaped grooves and protrusions are alternately arranged on the anchor paddle. The motor is started to drive the stirring shaft, the anchor paddle, the pitched blade paddle and the stirring rod to rotate at a speed of 283 rpm to ensure that the reaction materials are fully mixed. After 2 hours of reaction, the product is sampled and analyzed, and the sulfonation conversion rate is measured to be 95%, the power consumption is 10.7 KW, the steam consumption is 95 kg / h, and the circulating cooling water consumption is 4150 kg / h.

[0067] It can be concluded from the test results of the above four embodiments that the combination of the anchor paddle and the pitched blade paddle can improve the mixing effect and heat transfer efficiency of the materials and can improve the sulfonation conversion rate. Under the premise of the same reaction time, a higher sulfonation conversion rate can be obtained by using a smaller rotation speed, and it can be inferred that under the premise of the same rotation speed, the reaction system in the present invention can achieve a higher sulfonation conversion rate in a shorter time. In addition, the stirring rod on the pitched blade paddle and the groove and protrusion provided on the anchor paddle can be used in combination to obtain a higher sulfonation conversion rate.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sulfonation reaction system for preparing a coal water slurry additive, characterized in that: include: A reactor, wherein a containing cavity is provided in the reactor, and a feed inlet and a discharge port communicating with the containing cavity are provided; A temperature control device, the temperature control device is arranged around the reactor; A stirring assembly, the stirring assembly comprising: Driving parts; A stirring shaft, wherein a first end of the stirring shaft is drivingly connected to the driving member, and a second end of the stirring shaft extends into the accommodating cavity; An anchor propeller, the anchor propeller is fixedly connected to the second end of the stirring shaft; A plurality of pitched-blade paddles are fixedly connected to the stirring shaft at circumferential intervals in the accommodating chamber, and each of the pitched-blade paddles is arranged at an angle to a plane perpendicular to the stirring shaft.

2. The sulfonation reaction system for preparing a coal water slurry additive according to claim 1, characterized in that: A plurality of stirring rods are fixed at intervals at opposite ends of the inclined blade paddle.

3. The sulfonation reaction system for preparing a coal water slurry additive according to claim 1 or 2, characterized in that: The anchor-type paddle is alternately provided with arc-shaped grooves and protrusions.

4. The sulfonation reaction system for preparing a coal water slurry additive according to claim 3, characterized in that: The interval between adjacent grooves and protrusions is 8-12 mm.

5. The sulfonation reaction system for preparing a coal water slurry additive according to claim 3, characterized in that: The arc radius of the groove and the protrusion is in the range of 2-6 mm.

6. The sulfonation reaction system for preparing a coal water slurry additive according to claim 1 or 2, characterized in that: The angle between the pitched blade paddle and a plane perpendicular to the stirring shaft is in the range of 30-50°.

7. The sulfonation reaction system for preparing a coal water slurry additive according to claim 1 or 2, characterized in that: The stirring assembly also includes: A support plate, wherein opposite ends of the support plate are respectively connected to the stirring shaft and the anchor paddle.

8. The sulfonation reaction system for preparing a coal water slurry additive according to claim 1 or 2, characterized in that: Also included is an online detection component, the online detection component comprising: an output pipe, the output pipe passes through the reactor and communicates with the accommodating chamber, and a first regulating valve is installed on the output pipe; A mixing tube, the mixing tube is connected to the output tube, and a second regulating valve is installed on the mixing tube; a cooler, wherein an inlet of the cooler is connected to an outlet of the output pipe; An online detector, wherein the sample inlet of the online detector is connected to the outlet of the cooler.

9. The sulfonation reaction system for preparing a coal water slurry additive according to claim 8, characterized in that: The online detection component also includes: A static mixer, wherein the inlet of the static mixer is communicated with the outlet of the cooler, and the outlet of the static mixer is communicated with the sample inlet of the online detector.

10. The sulfonation reaction system for preparing a coal water slurry additive according to claim 9, characterized in that: The online detection component also includes: A sample tank, wherein the sample tank is provided with a liquid inlet, a liquid outlet and a liquid drain, the liquid inlet is connected to the outlet of the static mixer through a first connecting pipe, the liquid outlet is connected to the sample inlet of the online detector through a second connecting pipe, a liquid outlet valve is installed on the second connecting pipe, the liquid drain is connected to a liquid drain pipe, and a liquid drain valve is installed on the liquid drain pipe; A pH detector is installed on the first connecting tube.

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