Coal dehydration system

Abstract

The invention provides a coal dehydration system which comprises a boiler assembly, a coal dehydration device and a coal dehydration device. The steam generator is arranged in the smoke channel, and smoke generated by the boiler assembly is used for heating water in the steam generation cavity so as to generate steam; the steam dehydration part is provided with a material inlet, a first steam inlet, a dehydration cavity, a dry coal outlet, a slime water outlet and a steam outlet; the coal slime water separation part is arranged at the downstream of the steam dehydration part and is used for separating the coal slime water into coal slime and wastewater; the condensation part is arranged at the downstream of the steam dehydration part, and the condensation part is used for condensing the steam; the coal slime conveying part is arranged between the coal slime water separation part and the boiler assembly, and the coal slime conveying part conveys the coal slime discharged by the coal slime water separation part to the boiler assembly; wastewater discharged by the slime water separation part enters the first water storage part, so that water resources are recycled. The problem that waste of water vapor is easily caused in the coal dehydration process is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal dehydration, and in particular to a coal dehydration system. Background Art

[0002] The main products produced by my country's open-pit mines are low-rank coal, including lignite, long flame coal and non-sticky coal. Low-rank coal is shallowly buried and easy to mine.

[0003] However, low-rank coal has a low degree of metamorphism and a moisture content of up to 20-40%. Moisture is an impurity in coal, and high moisture content reduces the calorific value and quality of coal. Usually, low-rank coal needs to be dehydrated and dried.

[0004] In the prior art, when drying coal, steam is generally used as the drying medium, and the energy consumption of using steam as the drying medium is low. However, when steam is used for drying, water is usually discharged into the atmosphere in the form of wet flue gas, which is difficult to recycle and wastes water vapor. Summary of the invention

[0005] The present invention provides a coal dehydration system to solve the problem in the prior art that when steam is used as a drying medium to dry coal, moisture is discharged into the atmosphere in the form of wet flue gas, which is difficult to recycle and easily causes waste of water vapor.

[0006] The present invention provides a coal dehydration system, which comprises: a boiler component, which has a coal inlet, a furnace and a flue gas channel; a steam generator, which is arranged in the flue gas channel, and the steam generator has a steam generating chamber, a water inlet and a steam outlet, the water inlet and the steam outlet are respectively connected to the steam generating chamber, and the flue gas generated by the boiler component is used to heat the water in the steam generating chamber to generate steam; a steam dehydration section, which has a material inlet, a first steam inlet, a dehydration chamber, a dry coal outlet, a coal slime water outlet and a steam outlet, the material inlet, the first steam inlet, the dry coal outlet, the coal slime water outlet and the steam outlet are respectively connected to the dehydration chamber; a coal slime water separation section, which is arranged downstream of the steam dehydration section, and the coal slime water separation section has a coal slime water inlet, a coal slime outlet and a wastewater outlet The coal slime water inlet is connected with the coal slime water outlet, the coal slime water separation part is used to separate the coal slime water into coal slime and wastewater, the coal slime outlet is used to discharge the separated coal slime, and the wastewater outlet is used to discharge the separated wastewater; a condensation part is arranged downstream of the steam dehydration part, the condensation part has a second steam inlet and a condensate outlet, the second steam inlet is connected with the steam outlet, the condensation part is used to condense the steam, and the condensate outlet is connected with the coal slime water inlet; a coal slime conveying part, the coal slime conveying part is arranged between the coal slime water separation part and the boiler assembly, the coal slime conveying part conveys the coal slime discharged from the coal slime outlet to the coal inlet of the boiler assembly; a first water storage part, having a first water inlet, a first water outlet and a first water storage chamber which are connected with each other, and the wastewater outlet is connected with the first water inlet.

[0007] Furthermore, the wastewater outlet includes a first wastewater outlet and a second wastewater outlet, and the coal sludge water separation part includes: a concentrator, the concentrator has a coal sludge concentration chamber, a coal sludge water inlet, a first wastewater outlet and a coal sludge slurry outlet, the concentrator is used to concentrate the coal sludge water to form wastewater and coal sludge, the coal sludge water inlet, the first wastewater outlet and the coal sludge slurry outlet are respectively connected to the coal sludge concentration chamber, and the first wastewater outlet is connected to the first water inlet of the first water storage part; a filter press, having a sludge inlet, a coal sludge filtration chamber, a second wastewater outlet and a coal sludge outlet, the coal sludge slurry outlet is connected to the sludge inlet, the sludge filtration chamber is used to filter the coal sludge to form wastewater and coal sludge, the sludge inlet, the second wastewater outlet and the coal sludge outlet are respectively connected to the coal sludge filtration chamber, and the second wastewater outlet is connected to the first water inlet of the first water storage part.

[0008] Furthermore, the coal dehydration system also includes: a second water storage part, which is arranged between the condensation part and the coal slime conveying part, the second water storage part has a second water inlet, a second water storage chamber and a second water outlet, the second water inlet is connected with the condensation water discharge outlet, and the second water outlet is connected with the coal slime water inlet; a valve is arranged at the second water outlet, and the valve controls the opening and closing of the second water outlet.

[0009] Furthermore, the coal dehydration system also includes: a water supply component, which has a third water inlet, a water inlet channel and a third water outlet connected in sequence, the third water inlet is connected to the first water storage part connecting pipe, and the third water outlet is connected to the water inlet of the steam generator.

[0010] Furthermore, the water supply assembly includes: a connecting part, the connecting part having a third water inlet, a water inlet channel and a third water outlet; and a water supply pump, which is arranged on the connecting part.

[0011] Furthermore, the connecting part includes a first connecting pipe, a desalination pipe and a second connecting pipe connected in sequence, the end of the first connecting pipe away from the second connecting pipe forms a third water inlet, and the end of the second connecting pipe away from the first connecting pipe forms a third water outlet. The water supply component also includes: a desalination part, which is arranged in the desalination pipe, and the desalination part is used to dissolve the salt in the water flow in the water inlet channel.

[0012] Furthermore, the coal dehydration system also includes: a steam conveying pipe, one end of which is connected to the steam exhaust port of the steam generator, and the other end of which is connected to the first steam inlet of the steam dehydration unit; and a muffler, which is arranged in the steam conveying pipe.

[0013] Furthermore, the coal dehydration system also includes: a first filter unit, arranged in the first water storage chamber, the first filter unit divides the first water storage chamber into a first upper chamber and a first lower chamber that are independent of each other, the first water inlet is connected to the first upper chamber, and the first water outlet is connected to the first lower chamber; a first adsorption layer is arranged in the first lower chamber and is located above the first water outlet.

[0014] Furthermore, the coal dehydration system also includes: a second filter unit, arranged in the second water storage chamber, the second filter unit divides the second water storage chamber into a second upper chamber and a second lower chamber that are independent of each other, the second water inlet is connected to the second upper chamber, and the second water outlet is connected to the second lower chamber; a second adsorption layer is arranged in the second lower chamber and is located above the second water outlet.

[0015] Furthermore, the coal dehydration system also includes: a crushing assembly, which is arranged upstream of the steam dehydration part, the crushing assembly includes an outer shell and a crushing part, the outer shell has a material inlet, a crushing chamber and a material outlet, the crushing assembly is arranged in the crushing chamber to crush the material, and the material outlet is connected to the material inlet of the steam dehydration part.

[0016] By applying the technical solution of the present invention, the steam generator can generate steam, and the generated steam enters the steam dehydration part to play a drying role. After the steam is used as a drying medium to dry the coal in the steam dehydration part, part of the coal slurry water will be formed, and the formed coal slurry water is discharged through the coal slurry water outlet, and then enters the coal slurry water separation part through the coal slurry water inlet for further separation of coal and water; the steam that has played a dehydration role in the steam dehydration part is discharged from the steam dehydration part through the steam outlet, and then enters the condensation part through the second steam inlet, and the steam is condensed in the condensation part, and the steam is condensed into water. The water formed by condensation is discharged through the condensation water outlet, and the condensed water enters the coal slurry water separation part through the coal slurry water inlet, and is mixed with the coal slurry water to further separate the coal and water. By setting the condensation part, the present invention effectively recycles the steam, saves resources, and reduces energy consumption and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of a coal dehydration system provided according to an embodiment of the present invention is shown.

[0019] The above drawings include the following reference numerals:

[0020] 10. Boiler components;

[0021] 20. Steam generator;

[0022] 30. Steam dehydration section;

[0023] 40. Coal slurry water separation unit; 41. Concentrator; 42. Filter press;

[0024] 50. Condensation unit;

[0025] 60. Coal slime conveying department;

[0026] 70. The first water storage unit;

[0027] 80. Second water storage unit;

[0028] 90. Valve;

[0029] 100, water supply assembly; 101, connecting part; 102, water supply pump; 103, desalination part;

[0030] 110. Steam delivery pipe;

[0031] 120. Recycling Department;

[0032] 130, a first filter unit;

[0033] 140, first adsorption layer;

[0034] 150, second filter unit;

[0035] 160, second adsorption layer;

[0036] 170. Broken components. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0038] like Figure 1 As shown, the present invention provides a coal dehydration system, which includes a boiler assembly 10, a steam generator 20, a steam dehydration section 30, a coal slurry water separation section 40, a condensation section 50, a coal slurry conveying section 60 and a first water storage section 70. The boiler assembly 10 has a coal inlet, a furnace and a flue gas channel; the steam generator 20 is arranged in the flue gas channel, the steam generator 20 has a steam generating chamber, a water inlet and a steam outlet, the water inlet and the steam outlet are respectively connected to the steam generating chamber, and the flue gas generated by the boiler assembly 10 is used to heat the water in the steam generating chamber to generate steam; the steam dehydration section 30 has a material inlet, a first steam inlet, a dehydration chamber, a dry coal outlet, a coal slurry water outlet and a steam outlet, the material inlet, the first steam inlet, the dry coal outlet, the coal slurry water outlet and the steam outlet are respectively connected to the dehydration chamber; the coal slurry water separation section 40 is arranged at the steam dehydration section 30 Downstream, the coal sludge water separation section 40 has a coal sludge water inlet, a coal sludge outlet and a wastewater outlet, the coal sludge water inlet is connected to the coal sludge water outlet, the coal sludge water separation section 40 is used to separate the coal sludge water into coal sludge and wastewater, the coal sludge outlet is used to discharge the separated coal sludge, and the wastewater outlet is used to discharge the separated wastewater; the condensation section 50 is arranged downstream of the steam dehydration section 30, the condensation section 50 has a second steam inlet and a condensate outlet, the second steam inlet is connected to the steam outlet, the condensation section 50 is used to condense the steam, and the condensate outlet is connected to the coal sludge water inlet; the coal sludge conveying section 60 is arranged between the coal sludge water separation section 40 and the boiler assembly 10, the coal sludge conveying section 60 conveys the coal sludge discharged from the coal sludge outlet to the coal inlet of the boiler assembly 10; the first water storage section 70 has a first water inlet, a first water outlet and a first water storage chamber that are connected to each other, and the wastewater outlet is connected to the first water inlet.

[0039] By applying the technical solution of the present invention, the steam generator 20 can generate steam, and the generated steam enters the steam dehydration section 30 to play a drying role. After the coal is dried by using steam as a drying medium in the steam dehydration section 30, part of the coal slurry water will be formed; the formed coal slurry water is discharged through the coal slurry water outlet, and then enters the coal slurry water separation section 40 through the coal slurry water inlet for further separation of coal and water; the steam that has played a dehydration role in the steam dehydration section 30 is discharged from the steam dehydration section 30 through the steam outlet, and then enters the condensation section 50 through the second steam inlet, and the steam is condensed in the condensation section 50, and the steam is condensed into water. The water formed by condensation is discharged through the condensation water outlet, and the condensed water enters the coal slurry water separation section 40 through the coal slurry water inlet, and is mixed with the coal slurry water to further separate the coal from the water. By setting the condensation section 50, the present invention effectively recycles the steam, saves resources, and reduces energy consumption and production costs.

[0040] Specifically, coal enters the boiler assembly 10 through the coal inlet, and the flue gas generated by the combustion is transmitted to the steam generator 20 through the flue gas channel, heating the water in the steam generator 20 to generate steam; the steam is discharged to the first steam inlet of the steam dehydration section 30 through the steam outlet, and the steam contacts the coal fed through the material inlet of the steam dehydration section 30 in the dehydration chamber, and the water in the coal evaporates at high temperature to form dry coal and coal slime water; the dry coal is discharged through the dry coal outlet, and the coal slime water is discharged through the coal slime water outlet; the steam is sent to the condenser through the steam outlet The steam in the condensation section 50 is condensed into water when it is cooled, and the condensed water returns to the coal slurry water inlet through the condensation water outlet and mixes with the newly generated coal slurry water. The coal slurry water is separated from the coal slurry water in the coal slurry water separation section 40; the coal slurry water is separated into coal slurry and wastewater, and the coal slurry is discharged through the coal slurry outlet and sent to the coal slurry conveying section 60, which transports the coal slurry to the coal inlet of the boiler assembly 10 to be used as fuel again; the wastewater is discharged through the wastewater outlet, and the wastewater is collected in the first water storage section 70 for temporary storage for subsequent treatment.

[0041] In this solution, the condensing unit 50 realizes the recycling of steam and the saving of water resources. The coal sludge produced by the coal sludge water separation unit 40 will be further recycled and transported to the boiler assembly 10 for combustion as fuel, thus realizing the efficient utilization of resources.

[0042] In an embodiment of the present scheme, the coal dehydration system further comprises a recovery section 120, which is connected to the dry coal outlet of the steam dehydration section 30, and the dry coal obtained after drying by the steam dehydration section 30 will enter the recovery section 120 for collection.

[0043] Furthermore, the wastewater outlet includes a first wastewater outlet and a second wastewater outlet, the coal slime water separation part 40 includes a concentrator 41 and a filter press 42, the concentrator 41 has a coal slime concentration chamber, a coal slime water inlet, a first wastewater outlet and a coal slime slurry outlet, the concentrator 41 is used to concentrate the coal slime water to form wastewater and coal slime slurry, the coal slime water inlet, the first wastewater outlet and the coal slime slurry outlet are respectively connected to the coal slime concentration chamber, and the first wastewater outlet is connected to the first water inlet of the first water storage part 70.

[0044] The filter press 42 has a mud inlet, a coal mud filter pressure chamber, a second wastewater outlet and a coal mud outlet. The coal mud slurry outlet is connected to the mud inlet. The mud filter pressure chamber is used to filter the coal mud to form wastewater and coal mud. The mud inlet, the second wastewater outlet and the coal mud outlet are respectively connected to the coal mud filter pressure chamber. The second wastewater outlet is connected to the first water inlet of the first water storage part 70.

[0045] Specifically, the coal slime water enters the coal slime concentration chamber of the concentrator 41 from the coal slime water inlet. The concentrator 41 can separate the coal slime water into wastewater and coal slime slurry. The wastewater generated after concentration is discharged into the first water storage part 70 through the first wastewater discharge port for temporary storage, and the coal slime slurry generated after concentration is sent to the coal slime slurry filter press chamber of the filter press 42 through the coal slime slurry discharge port; in the filter press chamber, the coal slime slurry is filtered under high pressure to further separate the wastewater and the dried coal slime; the separated wastewater is discharged into the first water inlet of the first water storage part 70 again through the second wastewater discharge port to mix with the previous first wastewater; the coal slime is discharged through the coal slime outlet, sent to the coal slime conveying part 60, and then transported to the boiler assembly 10 for reuse.

[0046] In the embodiment of the present scheme, the coal sludge water is firstly subjected to preliminary coal-water separation by a concentrator 41, and the generated coal sludge is then passed into a filter press 42 for further coal-water separation treatment. The coordinated use of the concentrator 41 and the filter press 42 makes the coal-water separation treatment of the coal sludge water more thorough, thereby improving the treatment efficiency of the coal sludge water.

[0047] Furthermore, the coal dehydration system also includes a second water storage part 80 and a valve 90. The second water storage part 80 is arranged between the condensation part 50 and the coal slime conveying part 60. The second water storage part 80 has a second water inlet, a second water storage chamber and a second water outlet. The second water inlet is connected to the condensed water outlet, and the second water outlet is connected to the coal slime water inlet; the valve 90 is arranged at the second water outlet, and the valve 90 controls the opening and closing of the second water outlet.

[0048] In the embodiment of the present scheme, the steam discharged from the steam dehydration part 30 is condensed into water in the condensation part 50, and this part of water flows into the second water storage part 80 through the condensed water outlet and is temporarily stored in the second water storage chamber; the valve 90 can control the on-off of the second water outlet. After the valve 90 is opened, the condensed water flows from the second water storage part 80 into the concentrator 41. When the concentrator 41 works, a certain amount of water is required to achieve a better concentrating effect. The time and amount of condensed water flowing into the concentrator 41 can be controlled by the valve 90 to control the water content in the coal slime concentrating chamber of the concentrator 41, so as to ensure a better concentrating effect of the concentrator 41. The coordinated use of the second water storage part 80 and the valve 90 enables the amount of condensed water entering the concentrator 41 to be adjusted according to actual needs, thereby enhancing the controllability and working efficiency of the coal dehydration system.

[0049] Furthermore, the coal dehydration system also includes a water supply component 100, which has a third water inlet, a water inlet channel and a third water outlet connected in sequence. The third water inlet is connected to the first water storage part 70 by a connecting pipe, and the third water outlet is connected to the water inlet of the steam generator 20.

[0050] Specifically, the water in the first water storage part 70 enters the water supply component 100 through the third water inlet, and the water supply component 100 can transport the water back to the steam generator 20 through the third water outlet for generating steam, thereby realizing the recycling of water resources.

[0051] Furthermore, the water supply assembly 100 includes a connecting portion 101 and a water supply pump 102 . The connecting portion 101 has a third water inlet, a water inlet channel and a third water outlet. The water supply pump 102 is disposed on the connecting portion 101 .

[0052] In the embodiment of the present scheme, water in the first water storage part 70 enters the connecting part 101 through the third water inlet, and the water supply pump 102 is started to transport water from the connecting part 101 through the third water outlet to the steam generator 20. The water supply pump 102 realizes the stable transportation of water, so that the water can be stably and continuously transported to the steam generator 20, thereby improving the working efficiency and reliability of the coal dehydration system.

[0053] Furthermore, the connecting part 101 includes a first connecting pipe, a desalination pipe and a second connecting pipe connected in sequence, the end of the first connecting pipe away from the second connecting pipe forms a third water inlet, and the end of the second connecting pipe away from the first connecting pipe forms a third water outlet. The water supply component 100 also includes a desalination part 103, which is arranged in the desalination pipe, and the desalination part 103 is used to dissolve the salt in the water flow in the water inlet channel.

[0054] With such an arrangement, the salt in the water is removed by the desalting section 103, which can significantly improve the quality of the steam generated by the steam generator 20, reduce the pollution of the salt in the steam to the coal during the drying process, and improve the product quality of the coal after drying; at the same time, high-salinity water is prone to form scale during the heating process, affecting the heat conduction efficiency of the steam generator 20 and related pipelines. The desalting treatment of the desalting section 103 increases the service life of the coal dehydration system and reduces maintenance costs.

[0055] Furthermore, the coal dehydration system also includes a steam conveying pipe 110 and a silencer, one end of the steam conveying pipe 110 is connected to the steam exhaust port of the steam generator 20, and the other end is connected to the first steam inlet of the steam dehydration part 30; the silencer is arranged in the steam conveying pipe 110.

[0056] In this solution, the steam delivery pipe 110 enables the steam to be quickly and stably transmitted from the steam generator 20 to the steam dehydration unit 30, reducing the loss of steam heat energy during the transmission process and improving the drying efficiency. The muffler reduces the noise generated during the steam transmission process, optimizes the working environment, and improves the operating stability of the coal dehydration system.

[0057] Furthermore, the coal dehydration system also includes a first filter part 130 and a first adsorption layer 140. The first filter part 130 is arranged in the first water storage chamber. The first filter part 130 divides the first water storage chamber into a first upper chamber and a first lower chamber which are independent of each other. The first water inlet is connected to the first upper chamber, and the first water outlet is connected to the first lower chamber. The first adsorption layer 140 is arranged in the first lower chamber and is located above the first water outlet.

[0058] In this solution, the first filter section 130 can intercept larger particles and suspended matter in the water in the first water storage section 70, and the first adsorption layer 140 further adsorbs some organic matter and soluble impurities in the water, thereby improving the water quality entering the water supply component 100, thereby improving the desalination effect of the desalination section 103 and the quality of the steam generated by the steam generator 20, while also reducing the potential damage of impurities to the water supply component 100 and the steam generator 20, thereby improving the stability of the coal dehydration system.

[0059] Furthermore, the coal dehydration system also includes a second filter unit 150 and a second adsorption layer 160. The second filter unit 150 is arranged in the second water storage chamber. The second filter unit 150 divides the second water storage chamber into a second upper chamber and a second lower chamber that are independent of each other. The second water inlet is connected to the second upper chamber, and the second water outlet is connected to the second lower chamber; the second adsorption layer 160 is arranged in the second lower chamber and is located above the second water outlet.

[0060] In this solution, the second filter section 150 can intercept larger particles and suspended matter in the water in the second water storage section 80, and the second adsorption layer 160 can further adsorb some organic matter and soluble impurities in the water, thereby achieving deep purification of the water quality before the water enters the coal sludge water separation section 40, so that the coal sludge water separation section 40 can work more stably and efficiently, reduce the damage of impurities to the coal sludge water separation section 40, and improve the stability of the coal dehydration system.

[0061] Furthermore, the coal dehydration system also includes a crushing assembly 170, which is arranged upstream of the steam dehydration section 30. The crushing assembly 170 includes an outer shell and a crushing section. The outer shell has a material inlet, a crushing chamber and a material outlet. The crushing assembly 170 is arranged in the crushing chamber to crush the material, and the material outlet is connected to the material inlet of the steam dehydration section 30.

[0062] In the embodiment of this scheme, before the coal enters the dehydration chamber of the steam dehydration unit 30, it will first be crushed in the crushing chamber of the crushing assembly 170. In the crushing chamber, the crushing unit crushes the coal, breaking large pieces of coal into smaller pieces, and then entering the dehydration chamber for drying. The surface area of ​​the crushed coal increases, and the contact area between the coal and the high-temperature steam increases, thereby improving the drying efficiency of the coal.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0064] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0065] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0066] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0067] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coal dehydration system, characterized in that: include: A boiler assembly (10) having a coal inlet, a furnace and a flue gas passage; a steam generator (20) disposed in the flue gas passage, the steam generator (20) comprising a steam generating chamber, a water inlet and a steam outlet, the water inlet and the steam outlet being respectively connected to the steam generating chamber, the flue gas generated by the boiler assembly (10) being used to heat water in the steam generating chamber to generate steam; A steam dehydration section (30) comprises a material inlet, a first steam inlet, a dehydration chamber, a dry coal outlet, a coal slime water outlet and a steam outlet, wherein the material inlet, the first steam inlet, the dry coal outlet, the coal slime water outlet and the steam outlet are respectively connected to the dehydration chamber; A coal slurry water separation section (40) is arranged downstream of the steam dehydration section (30), the coal slurry water separation section (40) having a coal slurry water inlet, a coal slurry outlet and a wastewater outlet, the coal slurry water inlet is communicated with the coal slurry water outlet, the coal slurry water separation section (40) is used to separate the coal slurry water into coal slurry and wastewater, the coal slurry outlet is used to discharge the separated coal slurry, and the wastewater outlet is used to discharge the separated wastewater; a condensation section (50) disposed downstream of the steam dehydration section (30), the condensation section (50) having a second steam inlet and a condensed water outlet, the second steam inlet being communicated with the steam outlet, the condensation section (50) being used to condense steam, and the condensed water outlet being communicated with the coal slime water inlet; a coal slime conveying section (60), the coal slime conveying section (60) being arranged between the coal slime water separation section (40) and the boiler assembly (10), the coal slime conveying section (60) conveying the coal slime discharged from the coal slime outlet to the coal inlet of the boiler assembly (10); The first water storage portion (70) comprises a first water inlet, a first water outlet and a first water storage cavity which are interconnected, and the wastewater outlet is connected to the first water inlet.

2. The coal dehydration system according to claim 1, characterized in that: The wastewater outlet comprises a first wastewater outlet and a second wastewater outlet, and the coal slurry water separation part (40) comprises: a concentrator (41), the concentrator (41) comprising a coal slime concentration chamber, the coal slime water inlet, the first wastewater outlet and a coal slime slurry outlet, the concentrator (41) being used to concentrate the coal slime water so that the coal slime water forms wastewater and coal slime slurry, the coal slime water inlet, the first wastewater outlet and the coal slime slurry outlet being respectively connected to the coal slime concentration chamber, and the first wastewater outlet being connected to the first water inlet of the first water storage portion (70); The filter press (42) comprises a slurry inlet, a coal slurry filter press chamber, the second wastewater outlet and a coal slurry outlet, wherein the coal slurry outlet is connected to the slurry inlet, the slurry filter press chamber is used for filtering the coal slurry so that the coal slurry forms wastewater and coal slurry, the slurry inlet, the second wastewater outlet and the coal slurry outlet are respectively connected to the coal slurry filter press chamber, and the second wastewater outlet is connected to the first water inlet of the first water storage part (70).

3. The coal dehydration system according to claim 1, characterized in that: The coal dehydration system also includes: a second water storage portion (80) disposed between the condensation portion (50) and the coal slurry water separation portion (40), the second water storage portion (80) comprising a second water inlet, a second water storage chamber and a second water outlet, the second water inlet being in communication with the condensation water outlet, and the second water outlet being in communication with the coal slurry water inlet; A valve (90) is arranged at the second water outlet, and the valve (90) controls the opening and closing of the second water outlet.

4. The coal dehydration system according to claim 1, characterized in that: The coal dehydration system also includes: A water supply component (100), the water supply component (100) having a third water inlet, a water inlet channel and a third water outlet which are connected in sequence, the third water inlet being connected to the first water storage portion (70), and the third water outlet being connected to the water inlet of the steam generator (20).

5. The coal dehydration system according to claim 4, characterized in that: The water supply assembly (100) comprises: A connecting portion (101), the connecting portion (101) comprising the third water inlet, the water inlet channel and the third water outlet; A water supply pump (102) is arranged on the connecting portion (101).

6. The coal dehydration system according to claim 5, characterized in that: The connecting portion (101) comprises a first connecting pipe, a desalination pipe and a second connecting pipe which are connected in sequence, an end of the first connecting pipe away from the second connecting pipe forms the third water inlet, and an end of the second connecting pipe away from the first connecting pipe forms the third water outlet. The water supply assembly (100) further comprises: The desalination part (103) is arranged in the desalination pipe, and the desalination part (103) is used to dissolve the salt in the water flow in the water inlet channel.

7. The coal dehydration system according to claim 1, characterized in that: The coal dehydration system also includes: a steam delivery pipe (110), one end of the steam delivery pipe (110) being in communication with the steam outlet of the steam generator (20), and the other end of the steam delivery pipe (110) being in communication with the first steam inlet of the steam dehydration section (30); The muffler is arranged in the steam delivery pipe (110).

8. The coal dehydration system according to claim 1, characterized in that: The coal dehydration system also includes: A first filter part (130) is arranged in the first water storage chamber, the first filter part (130) divides the first water storage chamber into a first upper chamber and a first lower chamber which are independent of each other, the first water inlet is connected to the first upper chamber, and the first water outlet is connected to the first lower chamber; The first adsorption layer (140) is arranged in the first lower chamber and is located above the first water outlet.

9. The coal dehydration system according to claim 3, characterized in that: The coal dehydration system also includes: A second filter part (150) is arranged in the second water storage chamber, the second filter part (150) divides the second water storage chamber into a second upper chamber and a second lower chamber which are independent of each other, the second water inlet is connected to the second upper chamber, and the second water outlet is connected to the second lower chamber; The second adsorption layer (160) is arranged in the second lower chamber and is located above the second water outlet.

10. The coal dehydration system according to claim 1, characterized in that: The coal dehydration system also includes: A crushing assembly (170) is arranged upstream of the steam dehydration section (30), the crushing assembly (170) comprising an outer shell and a crushing section, the outer shell having a material inlet, a crushing chamber and a material outlet, the crushing assembly (170) being arranged in the crushing chamber to crush the material, and the material outlet being communicated with the material inlet of the steam dehydration section (30).

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