Temperature-controllable integrated catalytic reactor
By integrating a heat exchanger, auxiliary heater, and intelligent temperature control components into a temperature-controlled integrated catalytic reactor, the problem of temperature instability caused by fluctuations in exhaust gas concentration has been solved, achieving stable operation and cost reduction.
Patent Information
- Application Number
- CN202423107858.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-17
AI Technical Summary
When treating volatile organic compound (VOC) waste gas, existing catalytic reactors suffer from unstable temperature control due to fluctuations in waste gas concentration, which affects system energy consumption and operating costs.
Design a temperature-controlled integrated catalytic reactor that integrates a heat exchanger, auxiliary heater, catalytic bed, and intelligent temperature control components. The flue gas flow rate is adjusted through thermocouples and intelligent temperature control components to achieve precise temperature control.
Stable operation of the catalytic reactor was achieved, reducing energy consumption and operating costs, minimizing frequent start-ups and shutdowns due to over-temperature alarms, and extending equipment lifespan.
Smart Images
Figure CN223602323U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to VOCs waste gas treatment technical field, concretely relates to a controllable temperature integrated catalytic reactor. BACKGROUND
[0002] With the continuous advancement of industrialization, the production and manufacturing industry develops rapidly, and the production of waste gas often accompanies the production of desired products, among which volatile organic compounds are widely used as organic solvents in plastic, rubber, semiconductor, electronic production, coating, printing and other industries, such as waste gas, which has low boiling point and is easy to volatilize, has toxicity, irritability, teratogenicity and carcinogenicity, and seriously harms human health, so the world has made strict control on VOC waste gas emission, and our country's atmospheric pollutants comprehensive emission standard and emission standard of several industries also stipulate the emission limit value and the maximum allowable concentration. The recovery value of this kind of waste gas is low, and it is generally discharged after reaching the standard by using combustion method, and the combustion method is divided into direct combustion and catalytic combustion method, and the catalytic combustion method is widely used because of its low waste gas ignition temperature, wide application range and energy saving,
[0003] At present, the waste gas collected by the industry generally has a large fluctuation range, and the flue gas temperature fluctuation range after catalytic reaction is also large, and the control of catalytic reaction temperature directly affects the energy consumption and operation cost of the system, and good temperature control can directly bring considerable economic benefits, so it is necessary to research and develop a controllable temperature integrated catalytic reactor. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a controllable temperature integrated catalytic reactor to solve the problems in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a controllable temperature integrated catalytic reactor, which comprises a heat exchanger, an auxiliary heater, a catalytic bed, an intelligent temperature control assembly and an adjusting channel in the same shell, one side of the shell is provided with a waste gas inlet, the waste gas inlet is connected with the heat exchanger through a pipeline, the other end of the heat exchanger is connected with the auxiliary heater through a pipeline, a thermocouple one is arranged in the connecting pipeline between the heat exchanger and the auxiliary heater, the other end of the auxiliary heater is connected with the catalytic bed through a pipeline, a thermocouple two is arranged in the connecting pipeline between the auxiliary heater and the catalytic bed, the other end of the catalytic bed is connected with the intelligent temperature control assembly through a pipeline, one end of the intelligent temperature control assembly is connected with the catalytic bed, the other end of the intelligent temperature control assembly is connected with the heat exchanger, the intelligent temperature control assembly is also connected with the adjusting channel, one end of the adjusting channel is connected with the heat exchanger, the heat exchanger and the adjusting channel are connected through a pipeline to form a flue gas outlet, and the flue gas outlet is connected with an external chimney through a pipeline.
[0006] Preferably, the heat exchanger, auxiliary heater, catalytic bed, intelligent temperature control assembly, and adjusting channel are installed in the same housing, and an inlet and an outlet are arranged on the housing; the inlet is connected with the exhaust gas pipeline to be purified, and the outlet is connected with the chimney pipeline.
[0007] Preferably, the thermocouple is connected with an electric control cabinet, and a light-off temperature is set to ensure that the exhaust gas reaches the catalytic oxidation temperature.
[0008] Preferably, the catalytic bed is composed of multiple layers of honeycomb catalysts.
[0009] Preferably, the thermocouple and the temperature linkage intelligent temperature control assembly are connected, when the temperature of the thermocouple is lower than the light-off temperature, the intelligent temperature control assembly flows all the flue gas into the heat exchanger, at this time, all the heat is used for heat exchange of the low-temperature exhaust gas; when the temperature of the thermocouple is higher than the light-off temperature, the intelligent temperature control assembly flows part of the flue gas into the heat exchanger to heat the low-temperature exhaust gas at the inlet of the housing, and part of the flue gas flows into the adjusting channel, at this time, the heat of the equipment is in a self-balancing state, and the auxiliary heater does not need to be started again.
[0010] Preferably, the intelligent temperature control assembly comprises an electric actuator connecting rod, a rocker arm, an upper movable assembly, a partition plate, a lower movable assembly and a rocker arm connecting rod, the partition plate divides the shell of the intelligent temperature control assembly into two parts, the upper movable assembly and the lower movable assembly are arranged in the two parts respectively, the upper movable assembly and the lower movable assembly control the proportion of the gas flowing from the catalytic bed into the adjusting channel and the heat exchanger respectively, the upper movable assembly and the lower movable assembly are provided with a plurality of rocker arms, the rocker arms are connected in series through the rocker arm connecting rod, the electric actuator connecting rod drives the rotation of the rocker arms, and the rocker arms drive the rotation of the upper movable assembly and the lower movable assembly.
[0011] Technical effects and advantages: the heat exchanger, auxiliary heater, catalytic bed, intelligent temperature control assembly and adjusting channel are integrated in the same housing, which significantly reduces the floor area occupied by the equipment; at the same time, since all the components of the equipment are integrated in one housing, the on-site installation workload is small, and the equipment is convenient to move.
[0012] Through the functional design of the intelligent temperature control assembly, the temperature of the catalytic bed can be accurately controlled, the problem of unstable operation of the system caused by a large range of exhaust gas concentration in the existing catalytic system is effectively solved, and when the exhaust gas concentration is too high, the frequent alarm caused by over-temperature of the equipment affects the treatment efficiency and service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 FIG. 1 is a structural schematic view of the present application;
[0014] Figure 2 FIG. 4 is a structural schematic view of the intelligent temperature control assembly.
[0015] In the figure: 1, heat exchanger; 2, auxiliary heater; 3, catalytic bed; 4, intelligent temperature control assembly; 5, adjusting channel; 6, thermocouple one; 7, thermocouple two; 4.1, controller; 4.2, rocker arm; 4.3, upper movable assembly; 4.4, partition plate; 4.5, lower movable assembly; 4.6, rocker arm connecting rod. DETAILED DESCRIPTION
[0016] The specific embodiments of the utility model will be further described below in combination with the drawings. It needs to be explained here that the description of these embodiments is used to help understand the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.
[0017] The utility model provides a kind of temperature-controllable integrated catalytic reactor as shown in Figure 1 It includes heat exchanger 1, auxiliary heater 2, catalytic bed 3, intelligent temperature control assembly 4, adjusting channel 5 in the same shell, each component is connected by pipeline, heat exchanger 1 and auxiliary heater 2 are connected in the pipeline and are provided with thermocouple one 6, auxiliary heater 2 and catalytic bed 3 are connected in the pipeline and are provided with thermocouple two 7. Shell side is provided with waste gas inlet, waste gas inlet is connected with heat exchanger 1 by pipeline, heat exchanger 1 other end is connected with auxiliary heater 2 by pipeline, the other end of auxiliary heater 2 is connected with catalytic bed 3 by pipeline, catalytic bed 3 other end is connected with intelligent temperature control assembly 4 by pipeline, one end of intelligent temperature control assembly 4 is connected with catalytic bed 3, and the other end is provided with two connection outlets, simultaneously connect adjusting channel 5 and heat exchanger 1, heat exchanger 1 and adjusting channel 5 are connected and form flue gas outlet, flue gas outlet is connected with chimney by pipeline.
[0018] The utility model discloses a gas temperature control purifying working process is: the exhaust gas of purifying under the action of external blower enters the heat exchanger 1 through the shell import, one end of heat exchanger 1 connects the high temperature flue gas after catalytic oxidation of catalytic bed 3, one end connects the low temperature exhaust gas of purifying, under the action of heat exchanger 1, the temperature of low temperature exhaust gas of purifying is improved, one end of heat exchanger 1 is connected with auxiliary heater 2, and the exhaust gas after heat exchange then enters auxiliary heater 2 and heats to the ignition temperature, one end of auxiliary heater 2 is connected with catalytic bed 3, at this time, the exhaust gas reaching the ignition temperature enters catalytic bed 3 and carries out smokeless catalytic oxidation, obtains the high temperature flue gas of purifying, extremely low dischargeable concentration, catalytic bed 3 is connected through pipeline and temperature control component 4, and the high temperature flue gas reaching dischargeable concentration enters intelligent temperature control component 4, and the flow opening degree is adjusted through temperature control, and intelligent temperature control component 4 is connected through pipeline and heat exchanger 1, and intelligent temperature control component is connected through pipeline and adjusting channel 5 simultaneously, and the proportion of high temperature flue gas according to the set proportion is intelligently adjusted into heat exchanger 1 and adjusting channel 5, and heat exchanger 1 and adjusting channel 5 are connected with flue gas outlet simultaneously, and after the partial flue gas after heat exchange and the partial flue gas in adjusting channel are converged through pipeline, the flue gas is discharged into the chimney through flue gas outlet. This flue gas is the low concentration low temperature purifying gas reaching the standard.
[0019] As Figure 2 Shown, the intelligent temperature control component 4 includes electric actuator connecting rod 4.1, rocker arm 4.2, upper movable assembly 4.3, partition plate 4.4, lower movable assembly 4.5 and rocker arm connecting rod 4.6, the partition plate 4.4 divides intelligent temperature control component shell into two parts, and upper movable assembly 4.3 and lower movable assembly 4.5 are arranged in two parts respectively, and the left end of partition plate 4.4 does not contact the left side inner wall of intelligent temperature control component shell, so that the gas entering from the left end can enter upper movable assembly 4.3 and lower movable assembly 4.5 respectively, the upper movable assembly 4.3 and lower movable assembly 4.5 control the proportion of gas flowing from catalytic bed 3 into adjusting channel 5 and heat exchanger 1 respectively, the upper movable assembly 4.3 and lower movable assembly 4.5 are provided with a plurality of cutting even connecting rods, 4.2 rocker arm is connected together through 4.6 rocker arm connecting rod, realizes the synchronous rotation of rocker arm, 4.2 rocker arm drives upper movable assembly 4.3 and lower movable assembly 4.5 to rotate, the high temperature flue gas after catalytic oxidation through catalytic bed 3 enters intelligent temperature control component 4 through pipeline, electric actuator connecting rod 4.1 and electric actuator are connected, and electric actuator is connected through electric actuator connecting rod 4.1 according to the temperature difference between thermocouple one 6 and ignition temperature, drives rocker arm 4.2 to rotate and adjust, rocker arm 4.2 is connected in series through rocker arm connecting rod 4.6, and rocker arm drives upper movable assembly 4.3 and lower movable assembly 4.5 to rotate synchronously. The starting state of starting furnace (such as Figure 2), that is, the upper movable assemblies 4.3 are all perpendicular to the partition plates 4.4, and the upper movable assemblies 4.3 are in the closed state and cannot flow through the flue gas, and the lower movable assemblies 4.5 are all parallel to the partition plates 4.4, and at this time, the high-temperature flue gas passing through the catalytic bed all flows into the heat exchanger 1. When the waste gas concentration is low, the outlet temperature of the heat exchanger 1 is lower than the ignition temperature, at this time, the lower movable assemblies 4.5 are in the starting state, the upper movable assemblies 4.3 are in the closed state, and the flue gas all flows into the heat exchanger 1 through the lower movable assemblies 4.5; when the waste gas concentration is high to a certain extent, the catalytic oxidation is exothermic, and the flue gas temperature of the catalytic bed 3 rises more, at this time, if the flue gas all enters the heat exchanger 1 to heat the low-temperature waste gas, the outlet temperature of the waste gas will be greater than the catalytic ignition temperature, at this time, the rocker arm 4.2 will rotate, so that part of the high-temperature flue gas after catalysis enters the heat exchanger 1, and part of the high-temperature flue gas after catalysis enters the adjusting channel 5, so that the outlet temperature of the heat exchanger 1 is just equal to the catalytic ignition temperature, and the auxiliary heater 2 does not need to be opened for heat compensation, and the system reaches a self-running state. With the fluctuation of the concentration, the new device of the experiment can automatically control and regulate to make the system reach a stable operation.
[0020] The utility model can effectively solve the problem of unstable operation of the system caused by the large range of waste gas concentration in the current catalytic system, effectively solve the problem that when the waste gas concentration is too high, the equipment over-temperature causes frequent alarm start-stop to affect the treatment efficiency and the service life of the equipment, and the utility model has the advantages of small land occupation, small pressure loss and heat loss, low energy consumption, significantly reduced operation cost and the like.
[0021] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.
Claims
1. A temperature-controllable integrated catalytic reactor, characterized in that: The system includes a heat exchanger (1), an auxiliary heater (2), a catalytic bed (3), an intelligent temperature control component (4), and a regulating channel (5) all within the same housing. A waste gas inlet is located on one side of the housing and is connected to the heat exchanger (1) via a pipe. The other end of the heat exchanger (1) is connected to the auxiliary heater (2) via a pipe. A thermocouple (6) is installed in the connecting pipe between the heat exchanger (1) and the auxiliary heater (2). The other end of the auxiliary heater (2) is connected to the catalytic bed (3) via a pipe. A thermocouple 2 (7) is installed in the connecting pipe between the auxiliary heater (2) and the catalytic bed (3). The other end of the catalytic bed (3) is connected to the intelligent temperature control component (4) through a pipe. One end of the intelligent temperature control component (4) is connected to the catalytic bed (3), and the other end of the intelligent temperature control component (4) is connected to the heat exchanger (1). The intelligent temperature control component (4) is also connected to the regulating channel (5). One end of the regulating channel (5) and the heat exchanger (1) are connected to the flue gas outlet. The flue gas outlet is connected to the external chimney through a pipe.
2. The temperature-controllable integrated catalytic reactor according to claim 1, characterized in that: The heat exchanger (1), auxiliary heater (2), catalytic bed (3), intelligent temperature control component (4), and regulating channel (5) are installed in the same housing. The housing has an inlet and an outlet. The inlet is connected to the exhaust gas pipeline to be purified, and the outlet is connected to the chimney pipeline.
3. The temperature-controllable integrated catalytic reactor according to claim 1, characterized in that: Thermocouple 2 (7) is connected to the electrical control cabinet and the ignition temperature is set to ensure that the exhaust gas reaches the catalytic oxidation temperature.
4. The temperature-controllable integrated catalytic reactor according to claim 1, characterized in that: The catalyst bed (3) is composed of multiple layers of honeycomb catalyst.
5. The temperature-controllable integrated catalytic reactor according to claim 1, characterized in that: The intelligent temperature control component (4) of the thermocouple 1 (6) is used to control the temperature of the thermocouple 1 (6) when the temperature is lower than the ignition temperature. When the temperature of the thermocouple 1 (6) is higher than the ignition temperature, the intelligent temperature control component (4) controls the temperature of the thermocouple 1 (6) to control the temperature of the thermocouple 1 (6) when the temperature is lower than the ignition temperature. When the temperature of the thermocouple 1 (6) is higher than the ignition temperature, the intelligent temperature control component (4) controls the temperature of the thermocouple 1 (6) to control the temperature of the thermocouple 1 (6) when the temperature is lower than the ignition temperature. When the temperature of the thermocouple 1 (6) is higher than the ignition temperature, the intelligent temperature control component (4) controls the temperature of the thermocouple 1 (6) to control the temperature of the thermocouple 1 (6) when the temperature is lower than the ignition temperature. When the temperature of the thermocouple 1 (6) is lower ...
6. The temperature-controllable integrated catalytic reactor according to claim 1, characterized in that: The intelligent temperature control component (4) includes an electric actuator link (4.1), a rocker arm (4.2), an upper movable component (4.3), a partition plate (4.4), a lower movable component (4.5), and a rocker arm link (4.6). The partition plate (4.4) divides the housing of the intelligent temperature control component into two parts, and the upper movable component (4.3) and the lower movable component (4.5) are respectively arranged in the two parts. The upper movable component (4.3) and the lower movable component (4.5) control the proportion of gas flowing from the catalyst bed (3) into the regulating channel (5) and the heat exchanger (1). The upper movable component (4.3) and the lower movable component (4.5) are provided with several rocker arms (4.2). The rocker arms (4.2) are connected in series through the rocker arm link (4.6). The electric actuator link (4.1) drives the rocker arms (4.2) to rotate, and the rocker arms (4.2) drive the upper movable component (4.3) and the lower movable component (4.5) to rotate.