Steam pocket device for removing reaction heat and generating steam

Abstract

The invention discloses a steam pocket device for removing reaction heat and generating steam, and belongs to the technical field of chemical equipment. The device comprises a steam pocket and a tubular reactor, the tubular reactor is communicated with the steam pocket through a conveying pipeline, reaction heat generated in the reaction process can be transferred to the steam pocket, and heat absorption and cyclic utilization are achieved. A water level detector is arranged in the steam pocket and comprises a monitoring floating ball and a control part, the monitoring floating ball can monitor the water level depth of waste water, and the control part can control the sewage discharge pipeline to discharge sewage when the water level reaches an early warning line; an adjusting piece is arranged between a high water level detection piece and a low water level detection piece in the control part, and the water level control interval can be flexibly adjusted; secondly, efficient recovery of reaction heat and resource utilization of steam are achieved, and accurate water level control and comprehensive water quality management functions are achieved; the pH value of water is adaptively adjusted, the steam extraction efficiency is greatly improved, and a large amount of scale is prevented from appearing in the steam pocket.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical equipment, and in particular to a steam drum device for removing reaction heat and generating steam. BACKGROUND

[0002] In the industrial fields of chemical industry, petroleum, pharmaceutical and the like, many chemical reaction processes release a large amount of heat (i.e. reaction heat). If the reaction heat cannot be removed in time, the reaction temperature may be out of control, affecting the product quality, and even causing safety accidents. Therefore, the effective removal of reaction heat is one of the key technologies in chemical production.

[0003] A steam generating device for controlling the pressure of a steam drum is disclosed in Chinese Patent No. CN111981450B. The steam generating device includes an electric heating device and a steam drum. The electric heating device is arranged in the steam drum. The steam drum includes a water inlet pipe and a steam outlet. A first pressure sensor is arranged in the steam drum for measuring the pressure in the steam drum. The first pressure sensor is connected to a data acquisition unit. The data acquisition unit is connected to a central processor. The central processor is connected to a controller. The first pressure sensor transmits the detected pressure to the central processor through the data acquisition unit. The central processor receives the pressure data and then compares it with the preset target pressure. According to the comparison result, the controller issues an instruction to automatically control the heating power of the electric heater. The present application designs a device for intelligently controlling the pressure of the steam drum. The heating power can be adjusted according to the pressure in the steam drum, thereby ensuring the safety of the steam generating device under the condition of maximizing steam output.

[0004] However, the above-mentioned device still has some deficiencies in actual use: 1. First, the water source needed for the operation of the existing steam drum is generally provided by the boiler water in the boiler. Although the boiler water is already very pure, with the high-temperature evaporation, a large amount of water evaporates into steam and leaves the steam drum under the concentration effect, while the trace amount of salt and impurities dissolved in the water remain in the boiler water and continuously concentrate. This concentration can significantly increase the concentration of the originally trace amount of substances, thereby causing the originally pure boiler water to become waste water. When the waste water accumulates at the bottom of the steam drum waiting to be discharged, the impurities in the waste water will precipitate, solidify and clump, and then adhere to the inner wall of the steam drum, which is difficult to clean. If the dirt solidifies on the internal parts or sensors of the steam drum, it will seriously affect the accuracy of the parts or various sensors.

[0005] 2. Secondly, the increase in the concentration of trace amount of substances during the high-temperature evaporation of the boiler water will also cause the pH value inside the water body to be abnormal, causing the waste water temporarily stored in the steam drum to be in the acidic range for a long time, which will silently corrode the surface of the internal parts of the steam drum, greatly shortening the service life of the internal parts.

[0006] 3、In addition, the water level detection device inside the existing drum device relies on manual observation of the water level gauge or simple mechanical trigger device, there is a problem of response lag, low control precision, secondly, it can only realize the single water level detection function, if it needs to monitor water quality and other parameters at the same time, it needs to install independent equipment, which increases the complexity of the equipment.

[0007] Therefore, under the above-mentioned viewpoints, the existing device still has room for improvement. SUMMARY

[0008] In order to solve the above problems, the present application provides a drum device for removing reaction heat and generating steam, which adopts the following technical scheme: A drum device for removing reaction heat and generating steam, comprising a drum and a tubular reactor which are horizontally distributed and stationary, a conveying pipeline which is connected between the drum and the tubular reactor, and further comprising: A water level detector which is arranged inside the drum and comprises a monitoring float ball and a control component, the monitoring float ball can rise and fall with the liquid level, and the control component has a high water level detection sheet, a low water level detection sheet, and a moving sensing sheet connected with the monitoring float ball; A blowdown actuating mechanism which comprises an actuating cylinder arranged at the bottom of the drum, an opening and closing cylinder slidingly arranged in the actuating cylinder, and an electric push rod driving the opening and closing cylinder to rise and fall, and the cylinder wall of the actuating cylinder is provided with blowdown mesh holes; The moving sensing sheet triggers the electric push rod to act when it contacts with the high water level detection sheet to lift the opening and closing cylinder to open the blowdown, and triggers the electric push rod to act reversely when it contacts with the low water level detection sheet to lower the opening and closing cylinder to close the blowdown; The bottom of the drum is further provided with a blowdown pipeline.

[0009] Preferably, the control component further comprises a control box mounted on the end face of the inner wall of the drum, the high water level detection sheet and the low water level detection sheet are symmetrically arranged in the control box, the moving sensing sheet is located between the high water level detection sheet and the low water level detection sheet, and the moving sensing sheet is connected with the monitoring float ball through a connecting column which slidingly penetrates the control box, and the moving sensing sheet rises and falls synchronously with the monitoring float ball.

[0010] Preferably, an adjusting member is further arranged between the high water level detection sheet and the low water level detection sheet, which comprises two adjusting screw rods rotatingly arranged in the control box, a synchronous belt synchronously rotating the two adjusting screw rods, an adjusting gear arranged at the end of one of the adjusting screw rods, and an adjusting rack meshing with the adjusting gear and partially extending out of the drum, and the high water level detection sheet and the low water level detection sheet are respectively screwed on the two adjusting screw rods.

[0011] Preferably, a vertical column is slidably installed in the steam drum, the moving sensing sheet is connected with the opening and closing cylinder through the vertical column, the vertical column is connected with the output end of the electric push rod by sliding through the control box and the top wall of the steam drum, an electric push rod is installed on the top of the steam drum, and the output end of the electric push rod is connected with the vertical column. The electric push rod is controlled to start and stop through electric control technology, and the electric control technology of the electric push rod is associated with the electric signals of the high water level detection sheet, the low water level detection sheet and the moving sensing sheet.

[0012] Preferably, the outer periphery of the monitoring floating ball is symmetrically provided with buoyancy fins, the buoyancy fins are provided with detection nozzles and temporary storage tank bodies in communication with the detection nozzles; two groups of symmetrical branch pipes are further installed on the two sides of the monitoring floating ball, a plurality of temporary storage tank bodies are installed on the branch pipes at equal intervals, and the plurality of temporary storage tank bodies are arranged on the buoyancy fins.

[0013] Preferably, the acid-base balancing device and a total conduit communicating the temporary storage tank bodies and the acid-base balancing device are further included, and the acid-base balancing device injects neutralizing agents into the steam drum through the total conduit.

[0014] Preferably, a first dosing pipe and a second dosing pipe in communication with the steam drum are further included, the first dosing pipe is connected with a first tank body storing a scale inhibitor, and the second dosing pipe is connected with a second tank body storing a corrosion inhibitor or a bactericide.

[0015] Preferably, a cyclone separator is further arranged in the steam drum and located in the steam separation area for separating steam-water mixture.

[0016] Preferably, a steam pipe network is connected with the top of the steam drum and in communication with the steam outlet of the cyclone separator.

[0017] Preferably, the conveying pipe includes a hot medium conveying pipe and a cooling backwater pipe, the hot medium conveying pipe is used for conveying a medium absorbing reaction heat to the steam drum, and the cooling backwater pipe is used for returning waste water in the steam drum to the surface of the tubular reactor for cooling.

[0018] In summary, the present application has at least one of the following beneficial technical effects: Firstly, the present application directly transfers the reaction heat generated in the chemical reaction process to the water in the steam drum through the communication design of the tubular reactor and the steam drum, so that the heat energy is converted into steam and output through the steam pipe network, thereby avoiding the energy waste caused by direct discharge of reaction heat in the traditional cooling mode; the energy utilization efficiency of chemical production is significantly improved, the energy consumption cost of enterprises is reduced, and the industrial development trend of energy saving and emission reduction is met.

[0019] Moreover, the waste water generated by the steam can also be recycled to the tubular reactor for cooling, thereby improving the utilization rate of waste water.

[0020] Secondly, the application realizes real-time monitoring of water level and automatic control of sewage by monitoring the linkage design of the floating ball and the control component. When the wastewater level reaches the high water level detection sheet, the moving induction sheet triggers the sewage pipeline to open; when it drops to the low water level detection sheet, the sewage pipeline is automatically closed. The whole process does not need manual intervention, avoids the hysteresis and error of manual operation, ensures that the water level in the steam drum is always maintained in a reasonable range, and guarantees the stability of steam quality.

[0021] Thirdly, by means of the bidirectional threaded rod of the adjusting member, the synchronous belt and the adjusting rack structure, the application can flexibly adjust the distance between the high and low water level detection sheets according to different reaction conditions, so as to adjust the start and stop time of the sewage pipeline, meet diversified production needs, and improve the applicability and operation flexibility of the device.

[0022] Fourthly, the application realizes the addition of trisodium phosphate and sodium hydroxide through the first dosing pipeline and the second dosing pipeline, changes the existence form and properties of some impurities in water, makes them more easily removed from the steam drum water through precipitation, sewage and other methods, avoids their adhesion to the inner wall of the steam drum, solves the problem that the wastewater in the steam drum is easy to form calcium and magnesium salts in the prior art, and reduces the risk of scale adhesion and pipeline blockage through double dosing design, thereby reducing the equipment maintenance frequency and cost.

[0023] Fifthly, the monitoring floating ball is integrated with the buoyancy fin, the detection nozzle and the temporary storage tank, which can simultaneously detect the acidity and alkalinity of the wastewater while monitoring the water level. The detection data is transmitted to the external acid-base balancing equipment through the main conduit, so that the water quality can be adjusted in time to avoid the corrosion of the inner wall of the steam drum caused by over-acid or over-alkali wastewater, and prolong the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0024] The application will be further described below in combination with the drawings and examples.

[0025] Figure 1 is a structural schematic view of the steam drum device and the tube reactor of the application.

[0026] Figure 2 is a structural schematic view of the steam drum device of the application for removing reaction heat and generating steam.

[0027] Figure 3 is a structural schematic view of the water level detector and the cyclone separator in the steam drum of the application.

[0028] Figure 4 is a first perspective structural schematic view of the control component and the adjusting member of the application.

[0029] Figure 5 is a second perspective structural schematic view of the control component and the adjusting member of the application.

[0030] Figure 6 is the plan view of the control component and the adjusting member of the present application.

[0031] Figure 7 is the structural schematic view among the buoyancy fin of the monitoring floating ball, the detection nozzle and the temporary storage tank of the present application.

[0032] Figure 8 is the local structural schematic view of A in the present application. Figure 7

[0033] Figure 9 is the structural schematic view among the vertical column, the execution cylinder, the opening and closing cylinder and the pollution mesh hole of the present application.

[0034] Explanation of reference signs: 1, steam drum; 2, column reactor; 10, conveying pipe; 4, water level detector; 40, monitoring floating ball; 41, control component; 11, pollution pipe; 410, control box; 411, high water level detection sheet; 412, low water level detection sheet; 413, moving induction sheet; 414, connecting column; 5, adjusting member; 50, adjusting screw rod; 51, synchronous belt; 52, adjusting gear; 53, adjusting rack; 16, vertical column; 12, execution cylinder; 13, electric push rod; 14, opening and closing cylinder; 15, pollution mesh hole; 400, buoyancy fin; 401, detection nozzle; 402, temporary storage tank; 403, acid-base balance equipment; 404, main conduit; 405, branch pipe; 70, No. 1 dosing pipe; 80, No. 2 dosing pipe; 9, cyclone separator; 90, steam pipe network. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below. Figures 1-9

[0036] The device aims to realize efficient removal of reaction heat of column reactor 2 and steam resource utilization through integrated structural design, while integrating functions such as accurate water level monitoring, automatic pollution discharge and water quality regulation, and is suitable for various chemical production scenes that need heat recovery and steam utilization. The core of the device is composed of a static and horizontally distributed steam drum 1 and a column reactor 2, which form a closed loop heat transfer system through the intercommunicating conveying pipe 10, ensuring that the reaction heat can be stably conducted to the steam drum 1, completing the conversion and recovery of heat energy to steam.

[0037] Specifically, as follows: Example one: ​​The water source needed for the existing drum to work is generally provided by the boiler water in the boiler. Although the boiler water is very pure, with the high-temperature evaporation, a large amount of water evaporates into steam and leaves the drum, and the trace amount of salt and impurities dissolved in the water is left in the boiler water and continuously concentrated. This concentration can significantly increase the concentration of substances that originally have a trace amount of influence, thereby changing the originally pure boiler water into waste water. Therefore, the steam drum device for removing reaction heat and generating steam provided in the present application maintains the balance of substances in the waste water by external dosing to adjust the pH value of the waste water.

[0038] Referring to Figure 1 A steam drum device for removing reaction heat and generating steam is shown in FIG. 1, which includes a steam drum 1 that is stationary and horizontally distributed.

[0039] The steam drum 1 adopts a horizontal stationary design and has a hollow cylindrical structure. The material thereof is selected from metal materials (for example, stainless steel 316L or low-alloy high-strength steel) having good high-temperature resistance and corrosion resistance, so as to adapt to the complex environment of high temperature and multiple media in chemical production. The internal space of the steam drum 1 is divided into multiple regions according to functions: the lower part is a waste water storage area for temporarily storing waste water generated in the reaction process; the middle part is a steam-water mixing area, which is the main place for water to absorb heat and convert into steam-water mixture; and the upper part is a steam separation area, which is provided with a steam-water separation component for separating steam from water. A blowdown port is arranged at the center of the bottom of the steam drum 1 and is fixedly connected with a blowdown pipeline 11 through a flange connection structure.

[0040] The two ends of the steam drum 1 are designed in a sealed structure to ensure stable internal pressure and avoid steam leakage. The blowdown pipeline 11 is arranged at the bottom of the steam drum 1, and a sealing flange structure is used at the connection between the blowdown pipeline 11 and the steam drum 1 to ensure no leakage during blowdown.

[0041] Referring to Figure 1 A tubular reactor 2 is shown in FIG. 2, which is used for chemical reactions in chemical production. The reaction heat generated in the reaction process is absorbed by the steam drum 1 and recycled. A conveying pipeline 10 is installed between the tubular reactor 2 and the steam drum 1 to communicate with each other.

[0042] The tubular reactor 2 is a chemical reaction equipment, which is internally provided with multiple groups of tubes. The reaction medium is introduced into the tubes, and the outside of the tubes is in contact with the circulating medium. When a chemical reaction occurs in the reactor, the released reaction heat is transferred to the circulating medium outside the tubes through the tube wall. The circulating medium absorbs heat and its temperature rises, and then flows into the steam drum 1 through the conveying pipeline 10.

[0043] The conveying pipe 10 is made of high-temperature and high-pressure seamless steel pipe, and the outer wall is covered with a heat preservation layer (such as rock wool or aluminum silicate fiber felt) to reduce heat loss. It includes two pipes, one of which is a hot medium conveying pipe for conveying high-temperature medium (usually water or heat conducting oil) that has absorbed the reaction heat to the steam-water mixing area of the steam drum 1; the other is a cooling return water pipe for returning the waste water at the bottom of the steam drum 1 to the outside of the shell or tube side of the tubular reactor 2 to assist in cooling the shell and realize the cascade utilization of waste heat. The connection between the conveying pipe 10 and the equipment is made by standard flange or welding to ensure the reliability and sealing of the connection.

[0044] The key of the system is to realize real-time and accurate monitoring of water level and trigger automatic pollution removal action.

[0045] It should be noted that the tubular reactor 2 is provided with two conveying pipes 10, one of which conveys the reaction heat generated by the tubular reactor 2 to the steam drum 1, and the other conveys the waste water separated from the steam drum 1 to the surface of the tubular reactor 2 to cool it, thereby improving the utilization rate of waste water.

[0046] Referring to Figure 2 and Figure 3 , the steam drum 1 is provided with a water level detector 4, which detects the water produced when steam is extracted from the steam drum 1. It includes a monitoring float ball 40 for monitoring the water level of the waste water produced when steam is extracted from the steam drum 1, and a control component 41 for controlling the pollution removal after the monitoring float ball 40 detects that the depth of the waste water reaches the warning line.

[0047] The bottom of the steam drum 1 is also provided with a pollution removal pipe 11.

[0048] The water level detector 4 is used to monitor the water level of the waste water in the steam drum 1 in real time, and trigger the pollution removal operation when the water level reaches the warning line. The core is composed of a monitoring float ball 40 and a control component 41.

[0049] The monitoring float ball 40 is a hollow structure made of a material with a density less than that of the waste water, which can float on the surface of the waste water and move synchronously with the water level. The outer wall of the float ball is corrosion resistant and can withstand the corrosion of the waste water to ensure long-term stable operation.

[0050] Its working principle and process are as follows: When the water level in the steam drum 1 rises, the monitoring float ball 40 drives the moving inductive sheet 413 to move up. If the water level reaches the preset high water level, the moving inductive sheet 413 and the high water level detection sheet 411 come into physical contact and form an electrically conductive loop. The conductive signal is sent to an external controller (not shown in the figure, such as PLC), and the controller immediately issues a command to start pollution removal.

[0051] Further, referring to Figure 4 、 Figure 5 and Figure 6 , a structure schematic diagram of the control component 41 for controlling the detection of the detection float ball in the present application is shown; the control component 41 comprises a control box 410 installed on the upper end face of the inner wall of the steam pocket 1, two groups of high water level detection sheets 411 and low water level detection sheets 412 are arranged in the control box 410 in a symmetrical manner respectively, and a group of moving sensing sheets 413 is arranged between the high water level detection sheets 411 and the low water level detection sheets 412, and the moving sensing sheets 413 are connected with the monitoring float ball 40 through connecting columns 414, the moving sensing sheets 413 are synchronously lifted and lowered with the lifting and lowering of the monitoring float ball 40, the moving sensing sheets 413 are in contact with the high water level detection sheets 411, and then the steam pocket 1 starts to discharge the stored waste water through the blowdown pipeline 11, and the moving sensing sheets 413 are in contact with the low water level detection sheets 412, and then the blowdown pipeline 11 is closed to stop the discharge of the waste water.

[0052] The electric push rod 13 is controlled to start and stop through the electric control technology, and the electric control technology of the electric push rod 13 is associated with the electric signals of the high water level detection sheets 411, the low water level detection sheets 412 and the moving sensing sheets 413.

[0053] The two groups of high water level detection sheets 411 and low water level detection sheets 412 are made of metal materials with good electric conductivity, and the surfaces are subjected to oxidation resistance treatment to prolong the service life.

[0054] In specific implementation, when the water level in the steam pocket 1 rises, the monitoring float ball 40 drives the moving sensing sheets 413 to move upwards, and when the water level drops, the monitoring float ball 40 drives the sensing sheets to move downwards. When the moving sensing sheets 413 are in contact with the high water level detection sheets 411, an electric conduction loop is formed to trigger a blowdown signal, and the waste water is discharged through the blowdown pipeline 11 under the action of the internal pressure or gravity of the steam pocket 1. With the discharge of the waste water, the water level in the steam pocket 1 gradually drops, the monitoring float ball 40 drives the moving sensing sheets 413 to move downwards, and when the moving sensing sheets 413 are in contact with the low water level detection sheets 412, the loop is disconnected, the blowdown signal is terminated, and thus the linkage of the real-time monitoring of the water level and the blowdown control is realized.

[0055] When receiving a blowdown instruction, the electric push rod 13 is started to pull the vertical column 16 and the opening and closing cylinder 14 to move upwards. Since the outer wall of the opening and closing cylinder 14 originally blocks the blowdown mesh hole 15 on the execution cylinder 12, when it moves upwards, the blowdown mesh hole 15 is exposed and opened, and the waste water in the steam pocket 1 flows into the inside of the execution cylinder 12 through the blowdown mesh hole 15 under the action of gravity or pressure difference, and then enters the blowdown pipeline 11 to be discharged.

[0056] With the wastewater discharge, the water level drops, monitoring the floating ball 40 driven mobile sensing sheet 413 down. When the water level drops to the preset low water level, the mobile sensing sheet 413 and low water level detection sheet 412 contact, forming another electrical circuit, the signal triggers the controller to close the electric push rod 13 (or make it reverse operation), open and close cylinder 14 under the push of the electric push rod 13 reset downward, resealing sewage screen 15, stop sewage.

[0057] This automatic control logic ensures that the water level in the drum 1 is always maintained within a reasonable range, to avoid the water level is too high to affect the quality of steam or water level is too low to cause the equipment idle.

[0058] In addition, the end of the sewage pipe 11 can be connected to wastewater treatment device, the discharged wastewater is treated before discharge or reuse, in line with environmental requirements.

[0059] See Figure 4 And Figure 5 As shown, specifically, the high water level detection sheet 411 and low water level detection sheet 412 is also provided with an adjusting member 5 to adjust the distance between the high water level and low water level, the adjusting member 5 includes two groups of adjusting screw rod 50 rotatingly installed in the control box 410 through bearings, the adjusting screw rod 50 is a bidirectional screw structure, the high water level detection sheet 411 and the low water level detection sheet 412 are symmetrically screwed on the two adjusting screw rods 50 respectively.

[0060] The two adjusting screw rods 50 are commonly sleeved with a synchronous belt 51, and one side of the adjusting screw rod 50 is provided with an adjusting gear 52, the adjusting gear 52 is engaged with an adjusting rack 53, the adjusting rack 53 is slidingly arranged through the control box 410 and the drum 1 and extends outward.

[0061] When the water level control interval needs to be adjusted, the operator pushes and pulls the adjusting rack 53 extending outward, drives the adjusting gear 52 to rotate, and the adjusting gear 52 drives the adjusting screw rod 50 connected thereto to rotate; under the action of the synchronous belt 51, the other adjusting screw rod 50 rotates synchronously. Because the screw rod adopts a bidirectional screw structure, the high water level detection sheet 411 and the low water level detection sheet 412 will move in opposite directions or in reverse along the screw rod, thereby adjusting the distance between the two.

[0062] The working process is as follows: When the water level control interval needs to be adjusted, the operator pushes or pulls the adjusting rack 53 from the outside. The adjusting rack 53 drives the adjusting gear 52 to rotate, which in turn drives the adjusting threaded rod 50 connected thereto to rotate. Through the synchronous belt 51, the other adjusting threaded rod 50 rotates synchronously. Since the threads are bidirectional, the high water level detection sheet 411 and the low water level detection sheet 412 screwed thereon will move towards or away from each other at the same time, thereby changing the distance between them. The distance becomes larger, and the water level control interval becomes wider; the distance becomes smaller, and the control interval becomes narrower. A scale (not shown in the figure) can be provided beside the adjusting rack 53 to achieve precise distance control.

[0063] For example, when the adjusting rack 53 is pushed in a certain direction, the adjusting gear 52 drives the threaded rod to rotate clockwise, and the high water level detection sheet 411 and the low water level detection sheet 412 move towards each other under the action of the bidirectional threads, and the water level control interval is reduced; when the adjusting rack 53 is pulled in the opposite direction, the threaded rod rotates counterclockwise, and the two sets of detection sheets move away from each other, and the water level control interval is expanded. This adjustment method is simple to operate, and can accurately control the relative position of the high and low water level detection sheets 412, meeting the water level control requirements under different working conditions. A distance scale is provided near the adjusting rack 53 to facilitate precise control of the water level control interval.

[0064] Looking at Figure 4 , Figure 7 and Figure 9 , specifically, a vertical column 16 is slidingly installed in the steam drum 1, the bottom of the vertical column 16 is installed with an execution cylinder 12 of a conical structure, the top of the vertical column 16 slidingly penetrates the control box 410, the moving sensing sheet 413 and the steam drum 1 and extends to the top of the steam drum 1, and the electric push rod 13 is installed at the top of the steam drum 1 and connected with the vertical column 16 at the output end.

[0065] The execution cylinder 12 is of a meshed hollow structure, and a plurality of pollution discharge mesh holes 15 are equally spaced on the execution cylinder 12. The inner wall of the execution cylinder 12 is slidingly installed with an opening and closing cylinder 14, the opening and closing cylinder 14 abuts against the pollution discharge mesh hole 15 of the execution cylinder 12, and the opening and closing of the pollution discharge mesh hole 15 is realized by the movement of the opening and closing cylinder 14. The top of the opening and closing cylinder 14 is connected with the vertical column 16.

[0066] When the moving sensing sheet 413 contacts the high water level detection sheet 411 or the low water level detection sheet 412, a corresponding electrical signal is generated, which is transmitted to the electric control system of the electric push rod 13 to control the start and stop or change the running direction of the electric push rod 13.

[0067] For example, when the water level reaches the high water level warning line, when the moving sensor 413 contacts the high water level detection plate 411, the electronic control system drives the electric push rod 13 to shorten, causing the vertical column 16 to move upward. The vertical column 16 then causes the opening and closing cylinder 14 to slide upward relative to the actuator cylinder 12. At this time, the sewage discharge mesh 15 on the surface of the actuator cylinder 12 opens, and the wastewater enters the sewage discharge pipe 11 from the sewage discharge mesh 15 of the actuator cylinder 12, and then separates from the steam drum 1 from the sewage discharge pipe 11.

[0068] When the opening and closing cylinder 14 abuts against the inner wall of the actuator cylinder 12, the drain hole 15 of the actuator cylinder 12 is blocked, and the wastewater cannot be discharged.

[0069] Reference Figure 7 , Figure 8 and Figure 9 As shown, specifically, the monitoring float 40 integrates wastewater acidity / alkalinity monitoring functions while simultaneously monitoring water level. Two sets of symmetrically distributed buoyancy fins 400 are installed on the outer wall of the monitoring float 40. These buoyancy fins 400 are made of lightweight, corrosion-resistant materials, providing additional buoyancy to ensure stable floating and also serving as a mounting carrier for the detection components. See below for details: The monitoring float 40 monitors both the wastewater level and its acidity / alkalinity. Two sets of symmetrical buoyancy fins 400 are installed on the outer wall of the float 400. Detection nozzles 401 are installed on the buoyancy fins 400 and inserted into the wastewater. A pump-tank integrated temporary storage tank 402 is installed on each detection nozzle 401. The temporary storage tank 402, closer to the monitoring float 400, is connected to an external acid-base balance device 403 via a main conduit 404. This is used to transport water samples to the external device for acid-base analysis.

[0070] Two sets of symmetrical branch pipes 405 are installed on both sides of the monitoring float 40. Several temporary storage tanks 402 are installed at equal intervals on the branch pipes 405, and these temporary storage tanks 402 are also located on the buoyancy fins 400, forming a multi-point sampling structure. Multi-point sampling avoids detection errors caused by a single sampling point, ensuring the accuracy of acidity and alkalinity monitoring results.

[0071] After the detection nozzle 401 collects water samples and temporarily stores them in the tank, the micro pump transports the water samples to the external acid-base balance device 403 through the main conduit 404. The device analyzes the pH value of the water samples. If the acidity or alkalinity is found to be outside the preset range, the corresponding neutralizing agent is injected into the steam drum 1 through the main conduit 404 to adjust the acidity or alkalinity of the wastewater and prevent corrosion of the inner wall of the steam drum 1 due to water quality imbalance.

[0072] Its working process is as follows: The detection nozzle 401 is immersed below the liquid level, and the micro pump in the temporary storage tank 402 periodically extracts the wastewater sample and transports it to the external acid-base balancing device 403 through the total conduit 404 for real-time pH value analysis. If the analysis result shows that the pH value deviates from the preset range (such as 9-11), the acid-base balancing device 403 will start the dosing pump to accurately inject the neutralizing agent (such as NaOH solution or Na3PO4 solution) into the wastewater in the steam drum 1 through the total conduit 404 in the reverse direction, automatically adjusting the water quality to the target pH range, effectively preventing equipment acid corrosion or alkali embrittlement. If the pH value is too low, the water is acidic, which will accelerate the corrosion of metals; and if the pH value is too high, it may cause problems such as alkaline corrosion or caustic embrittlement, so it is necessary to accurately adjust the pH value by adding sodium hydroxide to maintain it within the appropriate range.

[0073] Looking back Figure 1 and Figure 2 As shown, in addition, the steam drum 1 is also independently provided with a first dosing pipeline 70 and a second dosing pipeline 80, which are connected to different agent storage tanks (first tank body, second tank body). The first dosing pipeline 70 is mainly used for adding scale inhibitor (such as trisodium phosphate), which reacts with calcium and magnesium ions in water to form loose water slag, which is discharged through the blowdown to prevent hard scale formation. The second dosing pipeline 80 can be used to add corrosion inhibitor or bactericide, etc., to further optimize the water quality and protect the equipment.

[0074] In the prior art, the wastewater in the steam drum 1 usually contains calcium, magnesium and other ions, which can easily form insoluble calcium and magnesium salts such as calcium carbonate and magnesium hydroxide in the high temperature and high pressure environment of the steam drum 1, thereby forming scale on the inner surface of the steam drum 1 and the steam pipeline. After adding trisodium phosphate through the first dosing pipeline 70, phosphate ions can react with calcium ions in water to form calcium phosphate, which has good flowability but is difficult to dissolve. These calcium phosphates exist in the form of water slag and can be discharged through the blowdown device of the steam drum 1 to prevent the formation of hard scale, ensure the heat transfer efficiency of the equipment, reduce energy consumption, and prolong the service life of the equipment. Trisodium phosphate is stored in the first tank body.

[0075] The steam drum 1 is also provided with a second dosing pipeline 80, and the second pipeline is provided with a second tank body at the end away from the steam drum 1. The second tank body can store corrosion inhibitor, bactericide and other auxiliary agents as needed. The corrosion inhibitor can form a protective film on the inner wall of the steam drum 1 to prevent corrosion of the metal surface by the wastewater; the bactericide can inhibit the growth of microorganisms in the water to prevent the formation of biological sludge. The dosing frequency and dosage of the second dosing pipeline 80 can be flexibly adjusted according to the water quality conditions, and it cooperates with the first dosing pipeline 70 to comprehensively ensure the stability of the water quality in the steam drum 1.

[0076] The addition of trisodium phosphate and sodium hydroxide helps to change the existence form and properties of some impurities in water, so that they are more easily removed from the steam drum 1 water by precipitation, pollution, etc. For example, they can make some colloidal substances coagulate to form larger particles, which are easy to separate, further improving the quality of the steam drum 1 water and reducing the adverse effects of impurities on steam quality and equipment operation.

[0077] Looking back Figure 1 、 Figure 2 and Figure 3 As shown, the steam drum 1 is provided with a cyclone separator 9 for steam-water separation of the reaction heat generated by the reactor. The top of the steam drum 1 is provided with a steam pipe network 90 for conveying the steam separated by the cyclone separator 9.

[0078] The steam drum 1 is provided with a cyclone separator 9 for separating the steam-water mixture generated by the tube reactor 2. The cyclone separator 9 adopts a cylindrical structure, and the inside is provided with guide vanes. When the steam-water mixture enters the separator, it rotates under the action of the guide vanes. Due to the difference in density between steam and water, under the action of centrifugal force, the water is thrown to the inner wall of the separator and flows down along the wall to the waste water area at the bottom of the steam drum 1; while the steam flows upward in the central area, realizing the separation of water and steam.

[0079] The separation efficiency of the cyclone separator 9 is high, which can effectively remove the water droplets carried in the steam and ensure the dryness of the output steam. Its installation position is located between the steam-water mixing area and the steam separation area of the steam drum 1, which is convenient for the steam-water mixture to enter the separator directly for treatment.

[0080] The top of the steam drum 1 is provided with a steam pipe network 90, and the steam separated by the cyclone separator 9 is conveyed to the external energy-using equipment through the steam pipe network 90. The steam pipe network 90 adopts a pressure-resistant and heat-insulating pipeline system, and the inner wall of the pipeline is smooth to reduce the resistance and heat loss during steam flow.

[0081] The inlet of the pipe network is connected with the steam outlet of the cyclone separator 9, and the outlet is provided with valves, pressure gauges, thermometers and other monitoring instruments for controlling the conveying amount of steam and monitoring the pressure and temperature of steam in real time. According to the distribution of energy-using equipment, the steam pipe network 90 can be provided with multiple branches, and each branch is equipped with corresponding control valves to realize the branch conveying and precise control of steam.

[0082] Through the synergistic effect of the cyclone separator 9 and the steam pipe network 90, it is ensured that the separated steam can be stably and efficiently conveyed to each energy-using link, fully realizing the benefits of reaction heat recycling.

[0083] Example two: In this embodiment two, its basic structure and working principle with example one is same. The difference is that the dosing system is further optimized to achieve more precise on-demand dosing.

[0084] In this embodiment, a high-precision metering pump and an electric control valve are added to both the first dosing pipeline 70 and the second dosing pipeline 80. The control unit of the acid-base balancing device 403 (which can be integrated into the central PLC) not only receives the pH analysis signal, but also receives the sewage state signal from the water level detector 4. Its control logic is optimized as follows: after system startup or large water replenishment, increase the dosage of scale inhibitor (Na3PO4); during normal operation or sewage, supplement the reagent in proportion; when the pH value is low, preferentially start the addition of alkaline neutralizing agent (NaOH); at the same time, according to the cumulative running time or steam production, periodically pulse the addition of bactericide or corrosion inhibitor.

[0085] When working: First, the tubular reactor 2 is started, and the internal chemical reaction is carried out and the reaction heat is released; the reaction heat is transmitted to the horizontal static steam drum 1 through the connected conveying pipeline 10, so that the water body in the steam drum 1 absorbs heat and gradually forms a steam-water mixture; at this time, the water level detector 4, the sewage pipeline 11, the dosing system, etc. in the steam drum 1 are all in the initial standby state.

[0086] Second step: The monitoring float ball 40 in the steam drum 1 floats on the surface of the wastewater and rises and falls synchronously with the water level; the monitoring float ball 40 drives the moving inductive sheet 413 to move in the control box 410 through the connecting column 414, and the inductive sheet is between the high water level detection sheet 411 and the low water level detection sheet 412, which reflects the water level position in real time; at the same time, the buoyancy fin 400 on the float ball keeps the float ball stable, ensuring the accuracy of water level monitoring.

[0087] Third step: When the wastewater level rises to the warning height, the moving inductive sheet 413 moves up with the float ball and contacts the high water level detection sheet 411, forming an electrical signal loop and triggering the sewage instruction; the sewage pipeline 11 at the bottom of the steam drum 1 is automatically opened after receiving the instruction, and the wastewater is discharged; with the discharge of wastewater, the water level drops, and the moving inductive sheet 413 moves down with the float ball, and when it contacts the low water level detection sheet 412, the loop is disconnected, and the sewage pipeline 11 is automatically closed, completing the sewage.

[0088] Fourth step: If you need to change the water level control range according to different reaction conditions, the operator pulls or pushes the adjustment rack 53 extended to the outside of the steam drum 1; the adjustment rack 53 drives the meshed adjustment gear 52 to rotate, and through the synchronous belt 51 transmission makes the two groups of adjustment screw rods 50 rotate synchronously; because the screw rod is a bidirectional screw structure, the high water level detection sheet 411 and the low water level detection sheet 412 move along the screw rod in opposite directions or in reverse directions, realizing the accurate adjustment of the distance between the two, and thus changing the water level control interval.

[0089] Fifth step: monitor the detection of the ball 40 on the probe 401 inserted into the wastewater, through the pump tank integrated temporary tank 402 to collect water samples, branch pipe 405 on the multiple temporary tank 402 to achieve multi-point sampling, to ensure monitoring representative; water samples were transported to the external acid-base balance equipment 403 through the main conduit 404, after the analysis of acid-base, through the main conduit 404 back to the injection of neutralizing agent adjustment; at the same time, the first dosing pipe 70 from the first tank to transport cleaning fluid, to remove the water insoluble matter to prevent scale; the second dosing pipe 80 from the second tank to transport auxiliary agent, to optimize water quality; finally, the cyclone separator 9 separates the steam-water mixture, pure steam through the top steam pipe network 90 output utilization.

[0090] The embodiments of the present application are the preferred embodiments of the present application, not limited to the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A steam drum device for removing reaction heat and generating steam, comprising a steam drum (1) and a tubular reactor (2) which are horizontally distributed and stationary, and a delivery pipeline (10) which is connected and communicates between the steam drum (1) and the tubular reactor (2), characterized in that, Also include: Water level detector (4) is arranged in the internal drum (1), including monitoring the ball (40) and control components (41), monitoring the ball (40) with liquid level, control components (41) have high water level detection sheet (411), low water level detection sheet (412) and monitoring the ball (40) connection movement sensing sheet (413); Blowdown actuator, including the execution cylinder (12) arranged at the bottom of the drum (1), the open-close cylinder (14) slidingly arranged in the execution cylinder (12), and the electric push rod (13) driving the open-close cylinder (14) to lift, the cylinder wall of the execution cylinder (12) is provided with blowdown mesh (15); When the movement sensing sheet (413) contacts the high water level detection sheet (411), the electric push rod (13) is triggered to act to lift the open-close cylinder (14) to open blowdown, and when the movement sensing sheet (413) contacts the low water level detection sheet (412), the electric push rod (13) is triggered to act reversely to lower the open-close cylinder (14) to close blowdown; The bottom of the drum (1) is further provided with blowdown pipeline (11).

2. A drum apparatus for removing reaction heat and generating steam according to claim 1, characterized in that: The control components (41) further include a control box (410) mounted on the inner wall of the drum (1), the high water level detection sheet (411) and the low water level detection sheet (412) are symmetrically arranged in the control box (410), the movement sensing sheet (413) is located between the high water level detection sheet (411) and the low water level detection sheet (412), and the movement sensing sheet (413) is connected with the monitoring ball (40) through a connecting column (414), the connecting column (414) slidingly penetrates the control box (410), and the movement sensing sheet (413) synchronously lifts with the monitoring ball (40).

3. A drum apparatus for removing reaction heat and generating steam according to claim 1, characterized in that: The high water level detection sheet (411) and the low water level detection sheet (412) are further provided with an adjusting member (5), which includes two adjusting screw rods (50) rotatingly arranged in the control box (410), a synchronous belt (51) synchronously rotating the two adjusting screw rods (50), an adjusting gear (52) arranged at one end of one of the adjusting screw rods (50), and an adjusting rack (53) meshing with the adjusting gear (52) and partially extending out of the drum (1), the high water level detection sheet (411) and the low water level detection sheet (412) are respectively screwed on the two adjusting screw rods (50).

4. The reactor vessel according to claim 1, wherein: A vertical column (16) is slidingly installed in the drum (1), the movement sensing sheet (413) is connected with the open-close cylinder (14) through the vertical column (16), the vertical column (16) slidingly penetrates the control box (410) and the top wall of the drum (1) and is connected with the output end of the electric push rod (13), the electric push rod (13) is installed at the top of the drum (1), and the output end of the electric push rod (13) is connected with the vertical column (16); The electric push rod (13) is controlled to start and stop by electric control technology, and the electric control technology of the electric push rod (13) is associated with the electric signals of the high water level detection sheet (411), the low water level detection sheet (412) and the movement sensing sheet (413).

5. The reactor vessel according to claim 1, wherein: The outer periphery of the monitoring floating ball (40) is symmetrically provided with buoyancy fins (400), and the buoyancy fins (400) are provided with detection nozzles (401) and temporary storage tanks (402) communicated with the detection nozzles (401); two groups of symmetric branch pipes (405) are further installed on both sides of the monitoring floating ball (40), a plurality of temporary storage tanks (402) are installed on the branch pipes (405) at equal intervals, and the plurality of temporary storage tanks (402) are arranged on the buoyancy fins (400).

6. A drum apparatus for removing reaction heat and generating steam according to claim 1, characterized in that: The device further comprises an acid-base balance device (403) and a general conduit (404) communicating the temporary storage tanks (402) and the acid-base balance device (403), and the acid-base balance device (403) injects neutralizing agents into the steam drum (1) through the general conduit (404).

7. The reactor vessel according to claim 1, wherein: The device further comprises a first dosing pipe (70) and a second dosing pipe (80) communicated with the steam drum (1), the first dosing pipe (70) is connected with a first tank storing a scale inhibitor, and the second dosing pipe (80) is connected with a second tank storing a corrosion inhibitor or a bactericide.

8. The reactor vessel according to claim 1, wherein: The steam drum (1) is further provided with a cyclone separator (9) in a steam separation zone for separating steam-water mixture.

9. The reactor vessel according to claim 1, wherein: The top of the steam drum (1) is connected with a steam pipe network (90) communicated with a steam outlet of the cyclone separator (9).

10. The reactor vessel according to claim 1, wherein: The conveying pipe (10) comprises a hot medium conveying pipe and a cooling backwater pipe, the hot medium conveying pipe is used for conveying a medium absorbing reaction heat to the steam drum (1), and the cooling backwater pipe is used for returning waste water in the steam drum (1) to the surface of the tubular reactor (2) to cool the tubular reactor (2).

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