Detection and reworking device for denitration of waste gas
By introducing a dual detection method of detection box and activated carbon plate layer into the waste gas treatment device, the problem of unqualified denitrification in the existing device is solved, and efficient waste gas detection and treatment is achieved, reducing environmental pollution.
Patent Information
- Application Number
- CN202511182427.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-22
- Publication Date
- 2025-11-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing waste gas treatment devices lack effective testing procedures, which makes it easy for unqualified denitrification waste gas to be emitted, causing environmental pollution.
A device comprising an exhaust chimney, a reaction chamber, a detection chamber, and an activated carbon plate layer was designed. It utilizes sensing components, a laser pointer, and a camera module for dual detection, combining redox reactions and physical adsorption to achieve accurate detection of nitric oxide and nitrogen dioxide in exhaust gas. The laser module monitors the gas flow of the activated carbon plate layer, allowing for timely replacement of the adsorption material.
It improves the accuracy and intensity of exhaust gas detection, ensures denitrification effect, and allows for timely replacement of activated carbon plates to prevent reduced gas delivery and reduce emissions of substandard exhaust gases.
Smart Images
Figure CN120992595A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of waste gas treatment equipment, in particular to a detection and rework device for denitration of waste gas. BACKGROUND
[0002] A large amount of waste gas is generated in the printing and dyeing process, and the waste gas contains a large amount of nitrogen oxides. If these nitrogen oxides are not treated before being discharged into the air, they will cause acid rain, photochemical smog and haze, and further cause serious pollution to the environment.
[0003] The existing waste gas treatment device has a simple structure and directly discharges the waste gas after preliminary denitration. There is no step of detecting the treated waste gas, or the detection effect of the waste gas is poor. Due to the poor detection effect, there is no rework measure. Therefore, the waste gas that does not meet the denitration standard is easily discharged into the air. SUMMARY
[0004] (I) Technical problem to be solved In view of the deficiencies of the prior art, the present application provides a detection and rework device for denitration of waste gas, which solves the problems raised in the background art.
[0005] (II) Technical scheme To achieve the above purpose, the present application is implemented by the following technical scheme: a detection and rework device for denitration of waste gas, comprising an exhaust chimney and a reaction box, the exhaust chimney is located on the left side of the reaction box, the top of the reaction box is connected with a gas guiding channel, a reaction cavity is arranged in the reaction box, the gas guiding channel is connected with the reaction cavity, a detection box is arranged in the reaction box, the bottom of the detection box is connected with the reaction cavity, a gas return pipe is arranged on the left side of the detection box, the gas outlet end of the gas return pipe is connected with the gas guiding channel, a sleeve and a sleeve ring are arranged in the exhaust chimney, the sleeve is located below the sleeve ring, and the sleeve is filled with a layer of activated carbon plate.
[0006] A reaction liquid is injected into the detection box, and a sensing assembly is arranged in the detection box, the sensing assembly comprises an iron block, a support rod and a sliding sheet, the iron block is located above the support rod, the sliding sheet is in sliding fit with the support rod, and the sliding sheet can slide up and down.
[0007] Iron rods are symmetrically connected to the two sides of the sliding sheet, wires are wound around the iron rods, electrode sheets are connected to the ends of the wires, a capacitor is arranged above the sliding sheet, a tension sensor is connected to the bottom of the capacitor, a thin spring is connected between the tension sensor and the sliding sheet, and the electrode sheets are electrically connected with the capacitor.
[0008] A laser pen and a camera module are further included, the laser pen and the camera module are connected with the inner wall of the detection box, the light emitted by the laser pen is rose red, and the camera module captures the light of the laser pen.
[0009] Preferably, the sleeve ring slides up and down in the exhaust chimney, the exhaust fan is installed in the sleeve ring, the laser emitting module is annularly distributed at the bottom of the sleeve ring, the laser receiving module is annularly distributed at the top of the sleeve ring, the laser emitting module corresponds to the laser receiving module one by one, and the light emitted by the laser emitting module is inclined to the corresponding laser receiving module.
[0010] Preferably, the detection box is provided with three chambers, the three chambers are respectively a retention chamber, a detection chamber and a gas conveying chamber, the retention chamber is located at the leftmost side and is communicated with the gas return pipe and the reaction chamber, the detection chamber is located at the right side of the retention chamber, the gas conveying chamber is located at the rightmost side of the detection chamber, the sensing assembly is located in the detection chamber, and the reaction liquid is injected into the detection chamber.
[0011] Preferably, the detection box is provided with three chambers, the three chambers are respectively a retention chamber, a detection chamber and a gas conveying chamber, the retention chamber is located at the leftmost side and is communicated with the gas return pipe and the reaction chamber, the detection chamber is located at the right side of the retention chamber, the gas conveying chamber is located at the rightmost side of the detection chamber, the sensing assembly is located in the detection chamber, and the reaction liquid is injected into the detection chamber.
[0012] Preferably, one of the electrode sheets is a positive electrode made of platinum metal, and the other electrode sheet is a negative electrode made of silver metal.
[0013] Preferably, the supporting rod is in an inverted T shape, the longitudinal part is vertically matched with the sliding piece, and the transverse part is used for welding with the inner wall of the detection box.
[0014] Preferably, the reaction box is connected with the exhaust pipe at the back, one end of the exhaust pipe is connected with the gas conveying chamber of the detection box in a butt joint mode, the other end of the exhaust pipe is connected with the exhaust chimney in a butt joint mode, a sliding groove is formed in the inner wall of the exhaust chimney, the sleeve ring is located in the sliding groove, vertical sliding rods are annularly distributed through the sleeve ring, the end portions of the sliding rods are connected with the inner wall of the sliding groove, a thick spring is connected with the top of the sleeve ring, and the upper end of the thick spring is connected with the top of the inner wall of the sliding groove.
[0015] (Three) beneficial effects The application provides a detection and rework device for denitration of waste gas. 1. The detection and rework device for denitration of waste gas sets up a detection box, the detection box is provided with a sensing assembly, the sensing assembly is composed of an iron block, a supporting rod, a sliding piece, an iron rod, a wire and an electrode sheet, a capacitor, a tension sensor and a spring, a current is generated by means of an oxidation-reduction reaction, a magnetic field is generated around the iron rod, and the sliding piece box iron block is close to a small distance under the action of magnetic force and buoyancy. Thus, the effect of detecting nitric oxide is achieved, the mode is more sensitive and fast in testing, and the accuracy of waste gas detection is improved.
[0016] 2、The device for detecting and reworking the waste gas for denitration detects nitrogen dioxide through the laser pen, the camera module and the reaction liquid, establishes double detection mode, improves the detection intensity of the waste gas, and further strengthens the waste gas detection effect. The waste gas is physically adsorbed by the activated carbon plate layer, and the absorption effect is further improved.
[0017] 3、The device for detecting and reworking the waste gas for denitration, the activated carbon plate layer is installed in the sleeve, the sleeve top is provided with a laser receiving module, the sleeve top is provided with a sleeve ring in sliding fit, the sleeve ring is provided with an exhaust fan, the laser receiving module and the laser emitting module are used for detecting the gas flowability of the activated carbon plate layer, and the workers are timely informed to replace the activated carbon plate layer. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structure perspective view of the present application; Figure 2 It is a structure sectional view of the present application; Figure 3 It is a structure sectional view of the present application; Figure 4 It is a structure sectional view of the present application; Figure 3 It is a structure sectional view of the present application; Figure 5 It is a structure sectional view of the present application; Figure 6 It is a structure sectional view of the present application;
[0019] In the figure: 1, exhaust chimney, 11, sliding rod, 2, reaction box, 21, air guide channel, 22, water pipe, 3, detection box, 31, air return pipe, 32, one-way membrane one, 33, one-way membrane two, 34, one-way membrane three, 35, laser pen, 4, sleeve, 41, laser receiving module, 5, activated carbon plate layer, 6, sleeve ring, 61, spring, 62, exhaust fan, 63, laser emitting module, 7, iron block, 8, support rod, 9, sliding sheet, 91, iron rod, 92, wire, 93, electrode sheet, 94, capacitor, 95, tension sensor, 96, spring. DETAILED DESCRIPTION
[0020] The present application provides a device for detecting and reworking the waste gas for denitration, as shown in Figures 1-6As shown, it comprises an exhaust chimney 1 and a reaction box 2, the exhaust chimney 1 is located on the left side of the reaction box 2, the top of the reaction box 2 is fixedly installed with an air guide channel 21, the reaction box 2 has a reaction cavity, the air guide channel 21 is in butt joint communication with the reaction cavity, the reaction box 2 is fixedly installed with a detection box 3, the bottom of the detection box 3 is in butt joint communication with the reaction cavity, the left side of the detection box 3 is fixedly installed with a back gas pipe 31, the gas outlet end of the back gas pipe 31 is in butt joint communication with the air guide channel 21, the exhaust chimney 1 is provided with a sleeve 4 and a sleeve ring 6, the sleeve 4 is located directly below the sleeve ring 6, the sleeve 4 is filled with an active carbon plate layer 5. The above-mentioned reaction box 2 carries out waste gas denitration treatment by means of acid absorption method, since it is a conventional technical means, therefore the specific mode is not described in detail. The sleeve 4 is opened at the top and bottom to facilitate the flow of waste gas.
[0021] The detection box 3 is injected with a reaction liquid, the detection box 3 is provided with a sensing assembly, the sensing assembly comprises an iron block 7, a support rod 8 and a sliding sheet 9, the iron block 7 is located directly above the support rod 8, the sliding sheet 9 is in sliding fit with the rod body of the support rod 8, and the sliding sheet 9 can slide up and down.
[0022] The main components of the reaction liquid include liquid water, p-aminobenzenesulfonic acid solution, naphthalene ethylenediamine hydrochloride solution and small particle suspended glass balls.
[0023] The sliding sheet 9 is fixedly installed with an iron rod 91 on both sides respectively, the iron rod 91 is externally wound with a wire 92, the wire 92 is an entire uninterrupted wire. The wire 92 is wound with two iron rods 91 at both ends respectively, and the winding directions are consistent.
[0024] The wire 92 is electrically connected with an electrode sheet 93 at the end, the sliding sheet 9 is provided with a capacitor 94 above, and the capacitor 94 is fixedly installed with the upper end of the support rod 8. The end of the iron rod 91 is fixedly installed with a non-conductive support, and the support is used for fixing the electrode sheet 93. The iron rod 91 is coated with a waterproof layer.
[0025] The capacitor 94 is fixedly installed with a tension sensor 95 at the bottom, the tension sensor 95 is fixedly bonded with a thin spring 96 between the sliding sheet 9, and the electrode sheet 93 is electrically connected with the capacitor 94.
[0026] It also comprises a laser pen 35 and a camera module, the laser pen 35 and the camera module are fixedly installed with the inner wall of the detection box 3, the light emitted by the laser pen 35 is rose red, and the camera module captures the light of the laser pen 35. Through the small particle suspended glass balls, the laser forms a clear visible light path in the reaction liquid, which facilitates the camera module to capture the light path.
[0027] Since the denitration treatment mainly removes the nitrogen monoxide and nitrogen dioxide in the waste gas, therefore the detection box 3 is used for monitoring whether there is residual nitrogen monoxide and nitrogen dioxide in the waste gas. In work, the waste gas is sent into the reaction liquid, if the waste gas is cleaned completely, the liquid has no change, and the camera module can clearly capture the light path formed by the laser pen 35 in the reaction liquid.
[0028] If the exhaust gas is not cleaned, nitrogen dioxide reacts with water to form nitrous acid and nitric acid. Nitrous acid undergoes diazotization reaction with p-aminobenzenesulfonic acid under acidic conditions, and then couples with naphthalene ethylenediamine hydrochloride to form rose red azo dye. The light path of the laser pen 35 is integrated with the color of the reaction solution. At this time, the camera module cannot tilt to capture the light path. The camera module feeds back the picture information to the computer terminal.
[0029] At the same time, combine the following equations, the working electrode (take NO detection as an example): The counter electrode (equilibrium reaction): .
[0030] Nitric oxide and water produce redox reaction, and the redox reaction on the surface of the electrode sheet 93 produces current. The current enters the capacitor 94 through the wire 92, and the current passes through the iron rod 91, thereby causing the iron rod 91 to generate a relatively weak magnetic field. Under the joint action of magnetic attraction and buoyancy, the sliding sheet 9 moves upward by a small amplitude, so that the fine spring 96 changes the force applied to the tension sensor 95, and the tension sensor 95 feeds back information to the computer terminal. To this end, an electrochemical NO sensor is formed for detection.
[0031] The sleeve ring 6 slides up and down in the exhaust chimney 1, the exhaust fan 62 is fixedly installed in the sleeve ring 6, the laser emitting module 63 is fixedly installed in the annular distribution at the bottom of the sleeve ring 6, the laser receiving module 41 is fixedly installed in the annular distribution at the top of the sleeve 4, the laser emitting module 63 and the laser receiving module 41 correspond one-to-one, and the laser emitting module 63 emits light obliquely to the corresponding laser receiving module 41.
[0032] Working principle: use activated carbon plate layer 5 for physical adsorption. With long-term use, the pores of the activated carbon plate layer are blocked, resulting in a gradual decrease in gas delivery. At this time, the exhaust fan 62 continues to work, and negative pressure is easily generated between the activated carbon plate layer 5 and the exhaust fan 62, thereby causing the exhaust fan 62 to slowly descend.
[0033] When the exhaust fan 62 descends to the lowest point, the light emitted by the laser emitting module 62 cannot be irradiated on the laser receiving module 41. At this time, the laser receiving module 41 transmits information to the computer terminal, informing the worker to replace the activated carbon plate layer 5 in time.
[0034] The detection box 3 is provided with three chambers, which are respectively a retention chamber, a detection chamber and a gas conveying chamber. The retention chamber is located at the leftmost side and is in communication with the gas return pipe 31 and the reaction chamber. The detection chamber is located at the right side of the retention chamber. The gas conveying chamber is located at the rightmost side of the detection chamber. The sensing assembly is in the detection chamber, and the reaction solution is filled in the detection chamber.
[0035] Also including one-way membrane one 32, one-way membrane two 33 and one-way membrane three 34, one-way membrane one 32 is fixedly installed at the communication between detection box 3 and reaction cavity, and one-way membrane two 33 and one-way membrane three 34 are fixedly installed with the inner wall of detection box 3. The inner part of detection box 3 is divided into three chambers by one-way membrane two 33 and one-way membrane three 34. One-way membrane one 32 only allows exhaust gas to pass from bottom to top, and one-way membrane two 33 and one-way membrane three 34 only allow exhaust gas to pass from left to right.
[0036] A gas pump and a solenoid valve are fixedly installed between detection box 3 and gas return pipe 31. When the exhaust gas detection is unqualified, the solenoid valve is opened, and the gas pump re-enters the exhaust gas into the bleed air passage 21.
[0037] One of the electrode sheets 93 is a positive electrode made of platinum metal, and the other electrode sheet 93 is a negative electrode made of silver metal.
[0038] The support rod 8 is in inverted T shape, the longitudinal part is vertically matched with the sliding sheet 9, and the transverse part is used for welding with the inner wall of the detection box 3. The capacitor 94 is fixedly installed at the top of the longitudinal part.
[0039] The reaction box 2 is butt-jointed and communicated with the exhaust pipe, one end of the exhaust pipe is butt-jointed and communicated with the gas conveying cavity of the detection box 3, and the other end of the exhaust pipe is butt-jointed and communicated with the exhaust chimney 1.
[0040] A sliding groove is formed in the inner wall of the exhaust chimney 1, the sleeve ring 6 is in the sliding groove, the sleeve ring 6 is annularly distributed and penetrates through the vertical sliding rod 11, the end of the sliding rod 11 is welded with the inner wall of the sliding groove, the sleeve ring 6 is fixedly installed with the thick spring 61 at the top, and the upper end of the thick spring 61 is welded with the top of the inner wall of the sliding groove. The sleeve ring 6 is suspended above the sleeve 4 by the thick spring 61.
[0041] Water pipes 22 are also fixedly installed on both sides of the reaction box 2, which are used to replace the liquid in the reaction chamber.
[0042] As described above, the detection and rework device for denitration of exhaust gas is provided with a detection box 3, the detection box 3 has a sensing assembly, the sensing assembly is composed of an iron block 7, a support rod 8, a sliding sheet 9, an iron rod 91, a wire 92, an electrode sheet 93, a capacitor 94, a tension sensor 95 and a spring 96, an electric current is generated by means of oxidation-reduction reaction, a magnetic field is generated around the iron rod 91, and the sliding sheet 9 is prompted to approach the iron block 7 by a small distance under the action of magnetic force and buoyancy. Thus, the effect of detecting nitric oxide is achieved, the test is more sensitive and fast, and the accuracy of exhaust gas detection is improved.
[0043] Moreover, nitrogen dioxide is detected by means of a laser pen 35, a camera module and a reaction liquid, so that a double detection mode is established, the detection strength of exhaust gas is improved, and the exhaust gas detection effect is further strengthened. The active carbon plate layer 5 is also provided to physically adsorb the exhaust gas, and the absorption effect is further improved.
[0044] And, the active carbon plate layer 5 is installed in the sleeve 4, the sleeve 4 top is equipped with laser receiving module 41, the sleeve 4 top is slidably fitted with the sleeve ring 6, the sleeve ring 6 is installed with exhaust fan 62, through the cooperation of laser receiving module 41 and laser emitting module 63, the gas flowability of the active carbon plate layer 5 is detected, and the function of timely informing the worker to replace the active carbon plate layer 5 is realized.
[0045] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are only by way of example and that modifications, changes, substitutions and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.
Claims
1. A device for detecting and reworking a denitration of exhaust gas, characterized by: Including exhaust chimney (1) and reaction box (2), exhaust chimney (1) is located reaction box (2) left side, reaction box (2) top butt joint has air lead channel (21), reaction box (2) is equipped with reaction cavity, air lead channel (21) is butt joint with reaction cavity intercommunication, reaction box (2) is equipped with detection box (3), detection box (3) bottom and reaction cavity butt joint intercommunication, detection box (3) left side is equipped with back gas pipe (31), back gas pipe (31) outlet end and air lead channel (21) butt joint intercommunication, exhaust chimney (1) is equipped with sleeve (4) and sleeve ring (6), sleeve (4) is located sleeve ring (6) directly below, sleeve (4) is filled with active carbon slab layer (5) in; The detection box (3) is filled with a reaction liquid, and the detection box (3) is provided with a sensing assembly, the sensing assembly comprises an iron block (7), a support rod (8) and a sliding sheet (9), the iron block (7) is located above the support rod (8), the sliding sheet (9) is in sliding fit with the support rod (8), and the sliding sheet (9) can slide up and down. The sliding sheet (9) is connected with an iron rod (91) on both sides, the iron rod (91) is wrapped with a wire (92), the wire (92) is connected with an electrode sheet (93), the sliding sheet (9) is provided with a capacitor (94) above, the capacitor (94) is connected with a tension sensor (95) at the bottom, the tension sensor (95) and the sliding sheet (9) are connected with a thin spring (96), and the electrode sheet (93) is electrically connected with the capacitor (94). It also includes a laser pen (35) and a camera module, the laser pen (35) and the camera module are connected with the inner wall of the detection box (3), the light emitted by the laser pen (35) is rose red, and the camera module captures the light of the laser pen (35).
2. The device for detecting and repairing the denitration of exhaust gas according to claim 1, characterized in that: The sleeve ring (6) slides up and down in the exhaust chimney (1), the sleeve ring (6) is provided with an exhaust fan (62), the sleeve ring (6) is provided with a laser emission module (63) in annular distribution at the bottom, the sleeve ring (6) is provided with a laser receiving module (41) in annular distribution at the top, the laser emission module (63) corresponds to the laser receiving module (41) one by one, and the laser emission module (63) emits light obliquely to the corresponding laser receiving module (41).
3. The device for detecting and repairing the denitration of exhaust gas according to claim 2, characterized in that: The detection box (3) is provided with three chambers, and the three chambers are respectively a retention chamber, a detection chamber and a gas conveying chamber, the retention chamber is located at the leftmost side and is communicated with the back gas pipe (31) and the reaction cavity, the detection chamber is located at the right side of the retention chamber, the gas conveying chamber is located at the rightmost side of the detection chamber, the sensing assembly is located in the detection chamber, and the reaction liquid is injected into the detection chamber.
4. The device for detecting and repairing the denitration of exhaust gas according to claim 3, characterized in that: It also includes one-way membrane one (32), one-way membrane two (33) and one-way membrane three (34), the one-way membrane one (32) is arranged at the communication position between the detection box (3) and the reaction cavity, the detection box (3) is divided into three chambers by the one-way membrane two (33) and the one-way membrane three (34), and the one-way membrane one (32) only allows exhaust gas to pass from bottom to top, and the one-way membrane two (33) and the one-way membrane three (34) only allow exhaust gas to pass from left to right.
5. The device for detecting and repairing the denitration of exhaust gas according to claim 4, characterized in that: One of the electrode sheets (93) is a positive electrode made of platinum metal, and the other electrode sheet (93) is a negative electrode made of silver metal.
6. The device for detecting and repairing the denitration of exhaust gas according to claim 5, characterized in that: The support rod (8) is in inverted T shape, the longitudinal part is vertically slidably connected with the sliding sheet (9), and the transverse part is used for being welded with the inner wall of the detection box (3).
7. The device for detecting and repairing the denitration of exhaust gas according to claim 6, characterized in that: The back of the reaction box (2) is connected with an exhaust pipe, one end of the exhaust pipe is in butt joint communication with the gas conveying cavity of the detection box (3), the other end of the exhaust pipe is in butt joint communication with the exhaust chimney (1), a sliding groove is formed in the inner wall of the exhaust chimney (1), the sleeve ring (6) is located in the sliding groove, vertical sliding rods (11) are arranged in the sleeve ring (6) in annular distribution, the end portions of the sliding rods (11) are connected with the inner wall of the sliding groove, and the top of the sleeve ring (6) is connected with a thick spring (61), and the upper end of the thick spring (61) is connected with the top of the inner wall of the sliding groove.