Pulse multistage ash encryption system and method

Abstract

The invention discloses a pulse multi-stage ash encryption system and method. The system comprises a multi-stage encryption unit and an intelligent control unit, each stage of encryption unit is sequentially provided with an ash pipe, an encryption tank body, a plurality of groups of pulse injection encryption systems, an encryption ash bin and an unloading system; the ash pipe is arranged above the dense tank body; the multiple groups of pulse-jet encryption systems are arranged in the encryption tank body, the encryption ash bin is arranged below the encryption tank body, and the unloading system is arranged below the encryption ash bin; each pulse injection encryption system comprises a pressure pipeline and an encryption valve, and the pressure pipeline is used for being connected with external compressed air. And the unloading system is connected with the ash pipe of the next-stage encryption unit and is used for conveying the ash to the next-stage encryption unit, so that the next-stage encryption unit encrypts the ash again until the multi-stage encryption unit encrypts the ash to the preset target density. According to the invention, high-pressure and intermittent pulse airflow can be provided, and the density upper limit value for dust encryption can be improved while the encryption efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of powder ash encryption, and in particular to a pulse multi-level powder ash encryption system and method. Background Art

[0002] During the production process of industrial silicon and ferrosilicon industry, microsilica powder dust will be generated in the flue gas. The dust collector is configured in the process flow to collect dust and transport the collected dust to the ash bin. The microsilica powder ash in the ash bin is characterized by fine particle size and low density, which is usually only 150-200kg / m3. The usual practice is to use special encryption equipment to encrypt the microsilica powder to increase its density to 300-600kg / m3, which is conducive to saving the transportation cost of microsilica powder.

[0003] The current existing encryption technology uses an encryption cylinder and an encryption pot bottom, and a Roots blower is used to blow air on the encryption pot bottom. The encryption pot bottom is provided with air flow distribution holes and breathable cloth. The air flow is blown into the encryption cylinder through the breathable cloth, and interacts with the microsilica powder inside the cylinder. The continuous turbulence of the air flow drives the microsilica powder inside the cylinder to interact with each other, and condense into large particles of dust, thereby increasing the density of the microsilica powder.

[0004] The inventors found in the process of studying related technologies that the prior art has the following defects:

[0005] The existing technology uses Roots wind to pass through the bottom of the encryption pot, and the airflow is evenly distributed, and the airflow flows evenly from the bottom of the pot. Since the encryption tank is usually high, the airflow at the bottom and the lower part of the encryption pipe can fully contact with the powder ash to form an effective encryption action. The airflow is from the bottom to the top, and the pressure is gradually reduced. The encryption effect is high at the bottom and low at the top, resulting in a large density of powder ash in the lower tank and a small density at the top. The uniformity of the powder ash density in the positive tank is poor, resulting in low overall encryption efficiency. Usually, a tank of ash (about 220m 3 ), the initial encryption takes 5 to 6 days.

[0006] The existing technology uses bottom air intake, and the airflow is from bottom to top, and the density gradually decreases, resulting in uncontrollable density of the encrypted microsilica powder, which is approximately between 300 and 600 kg / m3. In addition, since the airflow cannot fully contact with the powder ash in the tank, the airflow direction is uncontrollable, resulting in the inability of the existing technology to encrypt to a higher density.

[0007] In the prior art, since the encrypted airflow is blown into the tank bottom, only distribution holes are arranged in the bottom of the encrypted pot to distribute the airflow evenly. The airflow passes through the distribution holes in the bottom of the encrypted pot and enters the tank body. When it reacts with the powder ash, the airflow becomes turbulent and the airflow state cannot be predicted. Moreover, the encrypted airflow is blown by a Roots blower with a power of 90KW. It takes at least 10,000 kWh of electricity to encrypt the ash with a higher density, and the energy consumption for encryption is high.

[0008] The existing technology configures Roots blower to provide airflow with pressure controlled to about 65-85 kPa or higher. The pressure acting on the airflow is limited and cannot provide more efficient pressure to densify the powder ash.

[0009] The Roots blower configured in the prior art is in a normally open state during the encryption process, and the pipeline pressure is controlled by a relief valve, and a part of the air flow is vented and discharged. The relief valve configured therein is usually adjusted and operated by manual experience, which is prone to errors. Summary of the invention

[0010] The present invention aims to at least solve the technical problems existing in the prior art. To this end, the first aspect of the present invention provides a pulse multi-level powder ash encryption system, the system comprising a multi-level encryption unit and an intelligent control unit, the multi-level encryption unit is layered and distributed in the vertical direction and fixed by a steel frame;

[0011] Among them, each level of the encryption unit is provided with an ash pipe, a pressure balance pipe, an encryption tank, multiple groups of pulse jet encryption systems, an encrypted ash bin and a discharge system from top to bottom; the ash pipe is arranged above the encrypted tank and is connected to the encrypted tank; the multiple groups of pulse jet encryption systems are arranged in the encrypted tank, the encrypted ash bin is arranged below the encrypted tank, and the discharge system is arranged below the encrypted ash bin; each group of the pulse jet encryption system includes a pressure pipe and an encryption valve, and the pressure pipe is used to connect external compressed air;

[0012] The pulse jet densification system is arranged in layers within the densification tank body. When the powder ash to be densified enters the densification tank body from the top of the densification tank body through the ash pipe, the pulse jet densification system introduces compressed air through the pressure pipe and releases the compressed air through the densification valve, so that the powder ash is densified in layers from top to bottom under the pressure of the compressed air.

[0013] The encrypted ash bin includes a vibration motor, and the vibration motor is used to vibrate and encrypt the encrypted ash bin;

[0014] The intelligent control unit is used to obtain the density of the powder ash in the dense ash bin, and after the density reaches a preset first density, control the valve at the bottom of the dense ash bin to open, so as to transport the powder ash to the unloading system;

[0015] The unloading system is connected to the ash pipe of the next-level encryption unit and is used to transport the powder ash to the next-level encryption unit so that the next-level encryption unit can encrypt the powder ash again until the multi-level encryption unit encrypts the powder ash to a preset target density.

[0016] Optionally, the pressure pipe is connected to a plurality of the encryption valves inside the encryption tank, and an end of the pressure pipe extends out from the inside of the encryption tank;

[0017] A pulse valve is provided at the end of the pressure pipeline, and the pulse valve is opened or closed according to the instruction of the intelligent control unit.

[0018] Optionally, the encryption valve includes a pulse encryption nozzle connected to the pressure pipeline, an encryption shell connected to the pulse encryption nozzle for accommodating the compressed air, an encryption tray constituting the bottom of the encryption shell, and an encryption cloth suspended above the encryption tray;

[0019] When the pulse valve is opened, the compressed air is ejected from the pulse encryption nozzle and enters the encryption housing. The compressed air passes through the encryption cloth and the encryption tray in sequence through the flow-guiding effect of the encryption housing.

[0020] The dense cloth is used to filter the dust carried in the compressed air. A plurality of circular holes are evenly distributed on the dense tray. The circular holes are used to evenly distribute the compressed air so that the compressed air is ejected in a jet state.

[0021] Optionally, the encryption valve is rotatably connected to the encryption pipeline via the pulse encryption nozzle, and the angle between the encryption valve and the encryption pipeline is adjustable.

[0022] Optionally, there are multiple groups of pressure pipes, and the multiple groups of pressure pipes are arranged in layers and in parallel in the vertical direction inside the encrypted tank body. Each group of pressure pipes is arranged as a layer, and the pressure pipes of two adjacent layers are arranged at an angle staggered.

[0023] Optionally, the number of the pressure pipes in each group is at least one; when the number of the pressure pipes is two, the two pressure pipes form a cross shape; when the number of the pressure pipes is three, the three pressure pipes form a cross shape.

[0024] Optionally, the system further comprises a material level meter and a density sensor; the density sensor is arranged on the side wall of the dense ash bin, and is used to obtain density data of the powder ash in the dense ash bin;

[0025] The material level meter is arranged at the top of the encrypted tank body, and is used to obtain the height data of the powder ash;

[0026] The intelligent control unit is arranged outside the encryption unit, and is used for receiving the density data and the height data, and generating a control instruction according to the density data and the height data.

[0027] Optionally, the encrypted ash bin includes the pulse jet encryption system.

[0028] Optionally, the compressed air is provided by an air compressor.

[0029] A second aspect of an embodiment of the present invention provides a pulse multi-level dust encryption method, which is applied to an intelligent control unit in the pulse multi-level dust encryption system of the first aspect, and the method includes:

[0030] Receiving the height data sent by the material level meter, and comparing the height data with the set height data of the corresponding level encryption unit;

[0031] When the height data reaches the set height data, a gray pipe valve closing instruction is sent to the encrypted tank where the target material level meter is located; the gray pipe valve closing instruction is used to close the gray pipe valve of the encryption unit;

[0032] receiving density data sent by the density sensor, and comparing the density data with set density data of the encryption unit of the corresponding level;

[0033] When the density data reaches the set density data, a valve opening instruction is sent to the encrypted tank body where the density sensor is located; the valve opening instruction is used to open the valve at the bottom of the encrypted tank body.

[0034] The embodiments of the present invention have the following beneficial effects:

[0035] The pulse multi-stage powder ash encryption system provided in the embodiment of the present invention adopts pulse airflow encryption technology, which innovates the original bottom encryption pot to fluidize by blowing airflow, and uses high-pressure pulse airflow encryption. It is controlled by a pulse valve to generate high-pressure pulse airflow, and the pulse airflow acts on the powder ash in the tank. Different from the original continuous blowing of lower-pressure airflow, the present invention can provide high-pressure, intermittent pulse airflow, which improves the encryption efficiency and increases the upper limit of the density of powder ash encryption.

[0036] The present invention is equipped with several different encryption units, each unit is equipped with several pulse valves, each pulse valve controls several pulse encryption nozzles, and several pulse encryption nozzles are regularly arranged in the encryption tank. Compressed air is provided by the pulse valve, and the compressed air is evenly sprayed through the pulse encryption nozzle, and is in uniform contact with the powder ash. The high-pressure airflow provided by the compressed air drives the powder ash to act, which can provide a more uniform pulse airflow for the dust in the entire encryption bin, further improve the encryption efficiency, and can simultaneously encrypt the encryption density of the entire encryption tank, reducing the phenomenon of the upper and lower powder ash density difference.

[0037] The present invention has been intelligently upgraded, with an intelligent unit configured to provide density monitoring, combined with the required encryption density, to adjust parameters such as the blowing pressure, time interval, and action time, thereby achieving intelligent and precise control of the entire encryption process. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A mechanical structure diagram of a pulse multi-level powder ash encryption system provided by an embodiment of the present invention;

[0039] Figure 2 It is an internal structure diagram of a pulse multi-level powder ash encryption system provided by an embodiment of the present invention;

[0040] Figure 3 A mechanical structure diagram of a pressure pipeline provided by an embodiment of the present invention;

[0041] Figure 4 A side view of an encryption valve provided by an embodiment of the present invention;

[0042] Figure 5 A top view of an encryption valve provided by an embodiment of the present invention;

[0043] Figure 6 It is a top view of pressure pipes of various layers in a dense tank body provided by an embodiment of the present invention;

[0044] Figure 7 A flow chart of the steps of a pulse multi-level powder ash encryption method provided in an embodiment of the present invention.

[0045] Figure markings: 1-ash pipe, 2-encryption tank body, 3-pulse jet encryption system, 4-encryption ash bin, 5-unloading system, 6-vibration motor, 7-pressure balance pipe, 31-pressure pipeline, 32-encryption valve, 33-pulse valve, 34-pulse encryption nozzle, 321-encryption nozzle, 323-encryption shell, 324-encryption tray, 325-encryption cloth. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "multiple" means two or more. In addition, the use of "based on" or "according to" means openness and inclusiveness, because the process, steps, calculations or other actions "based on" or "according to" one or more of the conditions or values ​​may be based on additional conditions or values ​​beyond the described values ​​in practice.

[0048] Figure 1 A mechanical structure diagram of a pulse multi-level powder ash encryption system provided in an embodiment of the present invention.

[0049] like Figure 1 As shown, the system includes a multi-level encryption unit and an intelligent control unit. The multi-level encryption unit is distributed in layers in the vertical direction and fixed by a steel frame. Figure 1 The multi-level encryption unit in the figure is the first-level encryption unit and the second-level encryption unit inside the virtual frame.

[0050] Specifically, the present invention sets a multi-level encryption unit, the number of which is composed of 1 to N encryption units, and the spatial arrangement is an upper and lower layer relationship. The powder ash enters the first encryption unit from the top layer, and the encryption starts from the top encryption unit. The powder ash encrypted to a certain degree is transported to the second encryption unit, and the second encryption unit encrypts the powder ash of the first encryption unit for a second time. By analogy, the encryption unit of the corresponding level can be set according to the required final encryption density. The powder ash here can be specifically microsilica powder ash.

[0051] Figure 2 It is an internal structure diagram of a pulse multi-level powder ash encryption system provided by an embodiment of the present invention.

[0052] like Figure 2 As shown, each level of encryption unit is provided with an ash pipe 1, a pressure balance pipe 7, an encryption tank body 2, multiple groups of pulse jet encryption systems 3, an encrypted ash bin 4 and a discharge system 5 from top to bottom; the ash pipe 1 and the pressure balance pipe 7 are arranged on the top of the encrypted tank body 2 and are connected to the encrypted tank body 2; multiple groups of pulse jet encryption systems 3 are arranged in the encrypted tank body 2, the encrypted ash bin 4 is arranged below the encrypted tank body 2, and the discharge system 5 is arranged below the encrypted ash bin 4; each group of pulse jet encryption systems 3 includes a pressure pipe 31 and an encryption valve 32, and the pressure pipe 31 is used to connect external compressed air.

[0053] Specifically, the powder ash required for encryption enters the encrypted tank body 2 in the encryption unit from the top of the encrypted tank body 2 through the ash pipe 1, and the pulse jet encryption system 3 is arranged in layers inside the encrypted tank body 2, and the pulse jet encryption system 3 inputs compressed air into the powder ash in the encryption unit.

[0054] The specific process is that when the powder ash required for densification enters the densification tank body 2 from the top of the densification tank body 2 through the ash pipe 1, the pulse jet densification system 3 introduces compressed air through the pressure pipe 31 and releases the compressed air through the densification valve 32, so that the powder ash is densified layer by layer from top to bottom under the pressure of the compressed air.

[0055] The encrypted ash bin 4 includes a vibration motor 6 , and the vibration motor 6 is used to vibrate and encrypt the encrypted ash bin 4 .

[0056] The vibration motor 6 continuously acts on the dense ash bin 4 to assist the denseness. The vibration generated by the vibration motor 6 further increases the density of the powder ash.

[0057] The intelligent control unit is used to obtain the density of the powder ash in the dense ash bin 4, and after the density reaches a preset first density, control the valve at the bottom of the dense ash bin 4 to open, so as to transport the powder ash to the unloading system 5.

[0058] After the fly ash is transported to the discharge system 5, the valve of the pressure balance pipe 7 is opened, and the remaining compressed air is discharged from the pressure balance pipe 7 to the external dust removal or filtering components.

[0059] The unloading system 5 is connected to the ash pipe 1 of the next-level encryption unit, and is used to transport the powder ash to the next-level encryption unit, so that the next-level encryption unit can encrypt the powder ash again until the multi-level encryption unit encrypts the powder ash to a preset target density.

[0060] In addition, the steel frame provides support for encryption units at all levels.

[0061] In this way, the multi-level encryption unit in the present invention sets different compressed air pressures, different blowing programs, and different blowing times according to the required different encryption densities, which can improve the interaction between the airflow and the powder ash of different densities, improve the encryption efficiency of each layer, achieve the purpose of grading efficiency, and realize the effect of encrypting higher density.

[0062] In some embodiments, the pressure pipe 31 is connected to multiple encryption valves 32 inside the encryption tank body 2, and the end of the pressure pipe 31 extends from the inside of the encryption tank body 2; a pulse valve 33 is provided at the end of the pressure pipe 31, and the pulse valve 33 is opened or closed according to the instruction of the intelligent control unit.

[0063] In some embodiments, the encryption valve 32 includes a pulse encryption nozzle 321 connected to the pressure pipe 31, an encryption shell 323 connected to the pulse encryption nozzle 321 for containing the compressed air, an encryption tray 324 constituting the bottom of the encryption shell 323, and an encryption cloth 325 suspended above the encryption tray 324;

[0064] When the pulse valve 33 is opened, the compressed air is ejected from the pulse encryption nozzle 321 and enters the encryption housing 323. The compressed air passes through the encryption cloth 325 and the encryption tray 324 in sequence through the flow-guiding effect of the encryption housing 323.

[0065] The densifying cloth 325 is used to filter the dust carried in the compressed air. A plurality of circular holes are evenly distributed on the densifying tray 324. The circular holes are used to evenly distribute the compressed air so that the compressed air is ejected in a jet state.

[0066] Figure 3 A mechanical structure diagram of a pressure pipeline 31 provided in an embodiment of the present invention.

[0067] In the embodiment of the present invention, each encryption unit is equipped with a plurality of pressure pipes 31, and the pressure pipes 31 are used to access compressed air. Each pressure pipe 31 is equipped with a pulse valve 33, and each pulse valve 33 controls a plurality of pulse encryption nozzles 321. The pulse encryption nozzles 321 are arranged in the encryption valve 32, and the plurality of encryption valves 32 are regularly arranged in the encryption tank body 2. The pulse valve 33 provides a pulse airflow, and the pressurized pulse airflow is uniformly sprayed through the pulse encryption nozzle 321, and uniformly contacts the powder ash. The high-pressure airflow provided by the pulse airflow drives the powder ash to act, and can provide a more uniform pulse airflow for the dust in the entire encryption tank body 2, further improving the encryption efficiency, and can simultaneously encrypt the entire encryption tank body 2, reducing the phenomenon of the upper and lower powder ash density difference.

[0068] Figure 4 A side view of an encryption valve 32 provided in an embodiment of the present invention.

[0069] Figure 5 A top view of an encryption cloth 325 and an encryption tray 324 provided in an embodiment of the present invention.

[0070] like Figure 4 As shown, the encryption valve 32 includes a pulse encryption nozzle 321 connected to the pressure pipe 31, an encryption shell 323 connected to the pulse encryption nozzle 321 for containing compressed air, an encryption tray 324 constituting the bottom of the encryption shell 323, and an encryption cloth 325 suspended above the encryption tray 324.

[0071] Specifically, the high-pressure airflow enters the encrypted nozzle 321 from the pressure pipe 31, and the compressed air passes through the encrypted cloth 325 and the encrypted tray 324 through the flow-guiding effect of the encrypted housing 323. Figure 5 As shown, the encryption cloth 325 is used to prevent external powder and dust from entering the encryption tank body 2, thereby preventing the encryption nozzle 321 in the next-level encryption unit from being blocked.

[0072] like Figure 5 As shown, a certain number and diameter of circular holes are evenly distributed on the encrypted tray 324, which has the function of uniformly distributing the compressed air release and increasing the contact area between the airflow and the powder ash. The compressed air passes through the circular holes and enters the powder ash in the encrypted tank 2 and the encrypted ash bin 4 in a plurality of jet states. Due to the effect of the high-pressure airflow, a gas-solid two-phase flow is formed in the powder ash, and the airflow drives the turbulent movement of the dust, causing the dust to interact with each other, thereby achieving the purpose of increasing the dust density.

[0073] In some embodiments, the encryption valve 32 is rotatably connected to the encryption pipe via the pulse encryption nozzle 321, and the angle between the encryption valve 32 and the encryption pipe is adjustable.

[0074] Specifically, the connection between the encryption valve 32 and the encryption pipeline is a rotation connection, that is, the angle between the encryption valve 32 and the encryption pipeline is adjustable. Figure 1 As shown, the included angles between all the encryption valves 32 and the encryption pipelines are right angles.

[0075] The angle between the encryption valve 32 and the encryption pipeline can also be adjusted to other angles according to needs, and the angle between each encryption valve 32 and the encryption pipeline can also be adjusted to different angles. In this way, the encryption valve 32 can spray compressed air in multiple directions to compress the powder ash faster and better.

[0076] In some embodiments, there are multiple groups of pressure pipes 31, and the multiple groups of pressure pipes 31 are arranged in layers and in parallel in the vertical direction inside the encrypted tank body 2. Each group of pressure pipes 31 is arranged as a layer, and the pressure pipes 31 in two adjacent layers are arranged at an angle.

[0077] like Figure 2 As shown, there are three groups of pressure pipes 31 in the primary encrypted tank body 2, and the three groups of pressure pipes 31 are arranged in parallel in three layers in the vertical direction inside the encrypted tank body 2.

[0078] In addition, the pressure pipes 31 of two adjacent layers are arranged at an angle staggered.

[0079] The intervals between the density valves 32 on the pressure pipe 31 can also be arranged according to the actual working conditions and the shape and size of the density valves 32.

[0080] In a densification unit, the pressure pipe 31 is arranged in several layers, and each layer is arranged at a certain angle, so that the densification valves 32 of the next layer and the previous layer are staggered in the vertical space. In this way, the compressed air sprayed by the densification valve 32 can reach the entire densification tank 2, so that the powder ash and the compressed air are fully and evenly contacted.

[0081] From a macroscopic perspective, the structure of the encryption valves 32 that are staggered from top to bottom allows the entire can of powder ash to be in a state of micro-rotation after being acted upon by the upper encryption airflow during the encryption process, while the lower encryption airflow continues to act. Due to the micro-rotation state, the encrypted airflow formed by the compressed air presents a relay state from top to bottom, further improving the encryption efficiency.

[0082] In some embodiments, the number of the pressure pipes 31 in each group is at least one; when the number of the pressure pipes 31 is two, the two pressure pipes 31 form a cross shape; when the number of the pressure pipes 31 is three, the three pressure pipes 31 form a cross shape.

[0083] The pressure pipe 31 can be arranged in a variety of ways according to the working conditions, such as in a straight line, a cross, a cross, or a multi-dimensional arrangement.

[0084] Figure 6 It is a top view of each layer of pressure pipes 31 in a encrypted tank body 2 provided in an embodiment of the present invention.

[0085] like Figure 6 As shown, the number of pressure pipes 31 on each layer in the encrypted tank body 2 is different, and the rotation angle is different, so that the pressure pipes 31 on each layer are staggered.

[0086] The first layer has two densified pipes, which are arranged horizontally and vertically to form a cross shape; the second and third layers also have two densified pipes, and the cross shape formed by the two densified pipes on the second layer is rotated at a certain angle compared to the first layer, and the cross shape formed by the two densified pipes on the third layer is rotated at a certain angle compared to the first and second layers. In this way, the three layers of pressure pipes 31 are arranged in a staggered manner.

[0087] In the pulse jet encryption system 3 of the present invention, the pressure pipe 31 is arranged in layers in space, and the airflow presents a more uniform three-dimensional shape in the tank, and contacts the powder ash more fully, so that the density difference between the upper and lower parts of the whole tank of powder ash is small and the density is more uniform.

[0088] In some embodiments, the system also includes a level meter and a density sensor; the density sensor is arranged on the side wall of the encrypted ash bin 4, for obtaining the density data of the powder ash in the encrypted ash bin 4; the level meter is arranged at the top of the encrypted tank body 2, for obtaining the height data of the powder ash; the intelligent control unit is arranged outside the encryption unit, for receiving the density data and the height data, and generating control instructions according to the density data and the height data.

[0089] In the embodiment of the present invention, according to the program set by the intelligent unit, when the density of the powder ash in the encrypted ash bin 4 reaches a certain value obtained by the density sensor, a control instruction is generated to start the unloading system 5 to transport the powder ash encrypted to a certain density to the next-level encryption unit.

[0090] In addition, the density sensor may not be provided, and the density of the powder ash in the dense ash bin 4 may be measured by the duration of the pulse valve 33 being open and the pressure of the high-pressure air.

[0091] The material level meter is arranged at the top of the encrypted tank body 2 to obtain the height data of the ash to determine whether the ash reaches a preset height. When the preset height is reached, a control instruction is generated to close the valve of the ash pipe 1.

[0092] The present invention is equipped with an intelligent unit to provide material level monitoring and density monitoring, and in combination with setting the required encryption density, adjusts parameters such as the injection pressure, time interval, and action time, thereby achieving precise control of the entire encryption process.

[0093] In some embodiments, the compressed air is provided by an air compressor.

[0094] The embodiment of the present invention uses an air compressor to replace the original Roots blower, so that the airflow passes through the pulse valve 33 and operates at intervals, thereby achieving the purpose of energy saving. The air compressor can provide a high-pressure airflow of 0.1-0.8 MPa for the pressure pipe 31.

[0095] In summary, the pulse multi-stage powder ash encryption system provided in the embodiment of the present invention adopts pulse airflow encryption technology, and innovates the method of fluidizing the original bottom encryption pot by blowing airflow into it into high-pressure pulse airflow encryption. It is controlled by the pulse valve 33 to generate high-pressure pulse airflow. The pulse airflow acts on the powder ash in the tank. Different from the original continuous blowing of lower-pressure airflow, the present invention can provide high-pressure, intermittent pulse airflow, which improves the encryption efficiency and increases the upper limit of the density of powder ash encryption.

[0096] The present invention is equipped with several different encryption units, each unit is equipped with several pulse valves 33, each pulse valve 33 controls several pulse encryption nozzles, and several pulse encryption nozzles are regularly arranged in the encryption tank body 2. Compressed air is provided by the pulse valve 33, and the compressed air is uniformly sprayed through the pulse encryption nozzles to uniformly contact the powder ash. The high-pressure airflow provided by the compressed air drives the powder ash to act, which can provide a more uniform pulse airflow for the dust in the entire encryption bin, further improve the encryption efficiency, and can simultaneously encrypt the encryption density of the entire encryption tank body 2, reducing the phenomenon of the upper and lower powder ash density difference.

[0097] The present invention is equipped with an encryption valve 32, and the encryption tray 324 divides the compressed air into porous airflows, which are blown into the powder ash to be encrypted to form a multi-channel impact airflow, so that the powder ash can be fully contacted, thereby improving the contact between the airflow and the powder ash, strengthening the contact between the turbulent airflow and the powder ash, and improving the encryption efficiency.

[0098] In the present invention, an air compressor is used to replace the original Roots blower, and the air flow moves at intervals through the pulse valve 33, thereby achieving the purpose of energy saving.

[0099] The present invention has been intelligently upgraded, and an intelligent unit is configured to provide material level monitoring, density monitoring, etc., combined with the setting of the required encryption density, adjusting parameters such as the injection pressure, time interval, action time, etc., to achieve intelligent and precise control of the entire encryption process.

[0100] Figure 7 A flow chart of the steps of a pulse multi-level powder ash encryption method provided in an embodiment of the present invention.

[0101] This method is applied to Figure 1 An intelligent control unit in a pulse multi-level powder ash encryption system, the method comprising:

[0102] Step 101, receiving the height data sent by the material level meter, and comparing the height data with the set height data of the corresponding level encryption unit;

[0103] Step 102: When the height data reaches the set height data, a gray pipe valve closing instruction is sent to the encrypted tank where the target material level meter is located; the gray pipe valve closing instruction is used to close the gray pipe valve of the encryption unit;

[0104] Step 103, receiving density data sent by the density sensor, and comparing the density data with set density data of the corresponding level encryption unit;

[0105] Step 104: When the density data reaches the set density data, a valve opening instruction is sent to the encrypted tank body where the density sensor is located; the valve opening instruction is used to open the valve at the bottom of the encrypted tank body.

[0106] In step 101 to step 104, according to the program set by the intelligent unit, when the density of the powder ash in the encrypted ash bin reaches a certain value obtained by the density sensor, a control instruction is generated to start the unloading system to transport the powder ash encrypted to a certain density to the next-level encryption unit.

[0107] In addition, the density sensor may not be provided, and the density of the powder ash in the dense ash bin can be calculated by the duration of the pulse valve opening and the pressure of the high-pressure air.

[0108] The material level meter is arranged at the top of the encrypted tank body, and is used to obtain the height data of the powder ash to determine whether the powder ash reaches a preset height. When the preset height is reached, a control instruction is generated to close the valve of the ash pipe.

[0109] The present invention has been intelligently upgraded, and an intelligent unit is configured to provide material level monitoring, density monitoring, etc., combined with the setting of the required encryption density, adjusting parameters such as the injection pressure, time interval, action time, etc., to achieve intelligent and precise control of the entire encryption process.

[0110] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0111] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0112] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A pulse multi-level powder ash encryption system, characterized in that: The system includes a multi-level encryption unit and an intelligent control unit, wherein the multi-level encryption unit is distributed in layers in the vertical direction and fixed by a steel frame; Among them, each level of the encryption unit is provided with ash pipes, pressure balance pipes, encryption tanks, multiple groups of pulse jet encryption systems, encrypted ash bins and unloading systems from top to bottom; the ash pipes and the pressure balance pipes are both arranged on the top of the encrypted tanks and are connected to the encrypted tanks; the multiple groups of pulse jet encryption systems are arranged in the encrypted tanks, the encrypted ash bins are arranged below the encrypted tanks, and the unloading system is arranged below the encrypted ash bins; each group of the pulse jet encryption systems includes a pressure pipe and an encryption valve, and the pressure pipe is used to connect external compressed air; The pulse jet densification system is arranged in layers within the densification tank body. When the powder ash to be densified enters the densification tank body from the top of the densification tank body through the ash pipe, the pulse jet densification system introduces compressed air through the pressure pipe and releases the compressed air through the densification valve, so that the powder ash is densified in layers from top to bottom under the pressure of the compressed air. The encrypted ash bin includes a vibration motor, and the vibration motor is used to vibrate and encrypt the encrypted ash bin; The intelligent control unit is used to obtain the density of the powder ash in the dense ash bin, and after the density reaches a preset first density, control the valve at the bottom of the dense ash bin to open, so as to transport the powder ash to the unloading system; The pressure balance pipe is used to discharge the compressed air in the encrypted tank after the fly ash is transported to the unloading system; The unloading system is connected to the ash pipe of the next-level encryption unit and is used to transport the powder ash to the next-level encryption unit so that the next-level encryption unit can encrypt the powder ash again until the multi-level encryption unit encrypts the powder ash to a preset target density.

2. The system according to claim 1, characterized in that The pressure pipe is connected to a plurality of the encryption valves inside the encryption tank, and the end of the pressure pipe extends out from the inside of the encryption tank; A pulse valve is provided at the end of the pressure pipeline, and the pulse valve is opened or closed according to the instruction of the intelligent control unit.

3. The system according to claim 2, characterized in that The encryption valve comprises a pulse encryption nozzle connected to the pressure pipe, an encryption shell connected to the pulse encryption nozzle for containing the compressed air, an encryption tray constituting the bottom of the encryption shell, and an encryption cloth suspended above the encryption tray; When the pulse valve is opened, the compressed air is ejected from the pulse encryption nozzle and enters the encryption housing. The compressed air passes through the encryption cloth and the encryption tray in sequence through the flow-guiding effect of the encryption housing. The dense cloth is used to filter the dust carried in the compressed air. A plurality of circular holes are evenly distributed on the dense tray. The circular holes are used to evenly distribute the compressed air so that the compressed air is ejected in a jet state.

4. The system according to claim 3, characterized in that The encryption valve is rotatably connected to the encryption pipeline through the pulse encryption nozzle, and the angle between the encryption valve and the encryption pipeline is adjustable.

5. The system according to claim 1, characterized in that There are multiple groups of pressure pipes, which are arranged in layers and in parallel in the vertical direction inside the encrypted tank body. Each group of pressure pipes is arranged as a layer, and the pressure pipes in two adjacent layers are arranged at an angle staggered.

6. The system according to claim 1, characterized in that The number of the pressure pipes in each group is at least one; when the number of the pressure pipes is two, the two pressure pipes form a cross shape; when the number of the pressure pipes is three, the three pressure pipes form a cross shape.

7. The system according to claim 1, characterized in that The system further comprises a material level meter and a density sensor; the density sensor is arranged on the side wall of the dense ash bin and is used to obtain the density data of the powder ash in the dense ash bin; The material level meter is arranged at the top of the encrypted tank body, and is used to obtain the height data of the powder ash; The intelligent control unit is arranged outside the encryption unit, and is used for receiving the density data and the height data, and generating a control instruction according to the density data and the height data.

8. The system according to claim 1, characterized in that The encrypted ash bin includes the pulse jet encryption system.

9. The system according to claim 1, characterized in that The compressed air is provided by an air compressor.

10. A pulse multi-level powder ash encryption method, characterized in that: An intelligent control unit applied to the pulse multi-level dust encryption system according to any one of claims 1 to 9, the method comprising: Receiving height data sent by the material level meter, and comparing the height data with the set height data of the corresponding level encryption unit; When the height data reaches the set height data, a gray pipe valve closing instruction is sent to the encrypted tank where the target material level meter is located; the gray pipe valve closing instruction is used to close the gray pipe valve of the encryption unit; receiving density data sent by the density sensor, and comparing the density data with set density data of the encryption unit of the corresponding level; When the density data reaches the set density data, a valve opening instruction is sent to the encrypted tank body where the density sensor is located; the valve opening instruction is used to open the valve at the bottom of the encrypted tank body.

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