Concentrated sulfuric acid distributor for preparing chlorine dioxide
By designing a concentrated sulfuric acid distributor with an outer tantalum tube, an inner tantalum tube, and a nozzle structure, the problem of chlorine dioxide decomposition caused by uneven distribution of concentrated sulfuric acid was solved, and the yield of chlorine dioxide was improved.
Patent Information
- Application Number
- CN202520082866.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-14
AI Technical Summary
In existing technologies, the uneven distribution of concentrated sulfuric acid leads to excessively high local acidity of chlorine dioxide during the reaction, causing chlorine dioxide to decompose and affecting the yield.
A concentrated sulfuric acid distributor comprising an outer tantalum tube, an inner tantalum tube, and a nozzle was designed. Through the structural design of the inner tantalum tube and the nozzle, the concentrated sulfuric acid solution is evenly distributed, avoiding excessively high local acidity.
This method achieves uniform distribution of concentrated sulfuric acid solution, improves the yield of chlorine dioxide, and avoids the decomposition of chlorine dioxide.
Smart Images
Figure CN223717069U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chlorine dioxide preparation equipment field, especially a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide. BACKGROUND
[0002] Chlorine dioxide is internationally recognized high-quality papermaking bleaching agent, new generation broad-spectrum powerful bactericide and high-efficiency oxidant, chlorine dioxide with its unique oxidation performance in pulp bleaching, water treatment and bactericidal disinfection field application continues to grow.Pulp bleaching agent, its application is more and more universal, so far, it has not been found in cost, pulp whiteness and strength surpassing chlorine dioxide substitute.Chlorine dioxide is strong oxidant, is the best water treatment agent of substitution chlorine, also be ideal chemical disinfection bactericide.
[0003] Chlorine dioxide is extremely easy to explode under pressure, many attempts to compress or store chlorine dioxide, whether alone or combined with other gases, are not successful in business, so it is usually manufactured on site at the use location.Chlorine dioxide preparation process includes chemical method and electrolysis method.Electrolysis method is mainly applied to large-capacity chlorine dioxide preparation device due to high one-time investment.Chemical method is generally used to prepare chlorine dioxide in China, and among them, methanol reduction method is the most widely used, which uses sodium chlorate, concentrated sulfuric acid and methanol as raw materials to prepare chlorine dioxide, and the produced chlorine dioxide bleaching solution is used for pulp bleaching, and the mirabilite produced in the reaction is sent to mirabilite treatment system.Usually, concentrated sulfuric acid is directly added to the circulating pipe of the reactor through the insertion of tantalum tube or tetrafluoro tube, which often causes the local concentration of concentrated sulfuric acid to be too high, which can cause chlorine dioxide to decompose, therefore, the distribution effect of concentrated sulfuric acid directly affects the yield of chlorine dioxide. SUMMARY
[0004] The utility model aims at providing a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, which can effectively utilize the flow rate of reaction liquid, make concentrated sulfuric acid solution evenly distributed, avoid the decomposition of chlorine dioxide due to local acidity being too high, and further improve the chlorine dioxide yield of device.
[0005] In order to achieve the above object and other related purposes, the utility model provides a concentrated sulfuric acid distributor for preparing chlorine dioxide, it includes: outer tantalum tube, inner tantalum tube and spray head, one outer tantalab tube flange is equipped at both ends of outer tantalum tube, a plurality of first connecting holes are evenly provided on two outer tantalum tube flanges, one end of inner tantalum tube is located at the outside of outer tantalum tube, the other end of inner tantalum tube is located at the inside of outer tantalum tube, the outer wall of inner tantalum tube is fixedly connected with the outer wall of outer tantalum tube, one inner tantalum tube flange is equipped at one end of inner tantalum tube which is located at the outside of outer tantalum tube, a plurality of second connecting holes are equipped on inner tantalum tube flange, the spray head is arranged in outer tantalum tube and is coaxially arranged with outer tantalum tube, the spray head includes coaxially arranged first cone and second cone, the first cone and the second cone are all hollow cones with the diameter of bottom surface being larger than the diameter of top surface, the length of second cone is larger than the length of first cone, the bottom surface of first cone is connected with and communicated with the bottom surface of second cone, the top surface of first cone is connected with and communicated with one end of inner tantalum tube, the top surface of second cone is equipped with sealing plate, second cone is fixedly connected with the inner wall of outer tantalum tube through a plurality of rib plates, a plurality of rib plates are arranged along the axial direction of second cone and are evenly distributed on the surface of second cone, a plurality of small holes are evenly distributed on the surface of second cone between two adjacent rib plates.
[0006] In the utility model discloses a concentrated sulfuric acid distributor for preparing chlorine dioxide one example, both ends of outer tantalum tube are equipped with outer tantalum tube turn -ups, two outer tantalum tube flanges are sleeved on the outer tantalum tube and are connected with the outer tantalab tube slip, and two outer tantalum tube flanges are matched with two outer tantalum tube turn -ups respectively.
[0007] In the utility model discloses a concentrated sulfuric acid distributor for preparing chlorine dioxide one example, one end of inner tantalum tube which is located at the outside of outer tantalum tube is equipped with inner tantalum tube turn -ups, the inner tantalum tube flange is sleeved on the inner tantalum tube and is connected with the inner tantalum tube slip, and the inner tantalum tube flange is matched with the inner tantalum tube turn -ups.
[0008] In the utility model discloses a concentrated sulfuric acid distributor for preparing chlorine dioxide one example, the inner tantalum tube is vertically arranged with the outer tantalum tube, one end of inner tantalum tube which is located at the inside of outer tantalum tube is equipped with the elbow, and the end of elbow is connected with and communicated with the top surface of first cone.
[0009] In the utility model discloses a concentrated sulfuric acid distributor for preparing chlorine dioxide one example, the taper of first cone is twice the taper of second cone.
[0010] In the utility model discloses a concentrated sulfuric acid distributor for preparing chlorine dioxide one example, two ends of a plurality of rib plates are fixedly connected with the surface of second cone and outer tantalum tube perpendicularly.
[0011] In the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, the width of several the rib plate is 0.3~0.5 times of the length of the second cone.
[0012] In the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, the width of several the rib plate is 0.3~0.5 times of the length of the second cone.
[0013] In the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, several the small hole is vertically arranged on the surface of the second cone.
[0014] In the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, the width of several the rib plate is 0.3~0.5 times of the length of the second cone.
[0015] The utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, by the outer tantalum tube is installed at the inlet of reactor circulating pump, concentrated sulfuric acid is entered into the spray head by the inner tantalum tube, and it is sprayed out by several small holes on the surface of the second cone, while under the action of mother liquor circulating pump, reaction liquid flows from the first cone side to the second cone side at high speed, and reaction liquid forms turbulent flow when passing through the first cone, and is fully and uniformly mixed with the concentrated sulfuric acid sprayed from small hole.The utility model can effectively utilize the flow rate of reaction liquid, make concentrated sulfuric acid solution evenly distributed, avoid the decomposition of chlorine dioxide due to local acidity too high, and then improve the chlorine dioxide yield of device. BRIEF DESCRIPTION OF DRAWINGS
[0016] Fig. 1 It is the front view of one embodiment of the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide;
[0017] Fig. 2 It is the sectional view of one embodiment of the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide;
[0018] Fig. 3 It is the structure schematic view of the spray head in one embodiment of the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide.
[0019] Element reference numeral:
[0020] 100, outer tantalum tube;110, outer tantalum tube flange;111, first connecting hole;120, outer tantalum tube turnup;200, inner tantalum tube;210, inner tantalum tube flange;220, inner tantalum tube turnup;300, spray head;310, first cone;320, second cone;321, small hole;330, sealing plate;340, rib plate;400, elbow. DETAILED DESCRIPTION
[0021] The above and other advantages and effects of the present application will become readily apparent to those skilled in the art from the following description in conjunction with the accompanying drawings. The present application can be carried out by means either known or to be developed and stored in a computer program product, software, firmware, or hardware, including the means disclosed herein. The present application can be implemented in various ways, and the embodiments described herein should not be construed as limiting the scope of the present application. The features of the embodiments described herein can be combined with each other, provided that there is no conflict. It should be understood that the terms used in the embodiments of the present application are intended to describe specific embodiments and are not intended to limit the scope of the present application. Unless otherwise specified, the test methods in the following examples were generally performed under conventional conditions or according to the manufacturer's recommendations.
[0022] When the embodiments give a numerical range, it should be understood that, unless otherwise specified by the present application, both endpoints of each numerical range and any number between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present application are consistent with the understanding of the present art by those skilled in the art and the description of the present application. Any method, equipment and material of the prior art similar or equivalent to the method, equipment and material of the embodiments of the present application can be used to realize the present application.
[0023] Please refer to Figs. 1-3The utility model provides a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, it includes: outer tantalum tube 100, inner tantalum tube 200 and spray head 300, one outer tantalum tube flange 110 is equipped at the both ends of the outer tantalum tube 100 respectively, and a plurality of first connecting holes 111 are equipped on the two outer tantalum tube flanges 110.The one end of the inner tantalum tube 200 is located at the outside of the outer tantalum tube 100, the other end of the inner tantalum tube 200 is located at the inside of the outer tantalum tube 100, the outer wall of the inner tantalum tube 200 is fixedly connected with the outer wall of the outer tantalum tube 100, and the one end of the inner tantalum tube 200 located at the outside of the outer tantalum tube 100 is equipped with inner tantalum tube flange 210, and a plurality of second connecting holes are equipped on the inner tantalum tube flange 210.The spray head 300 is arranged in the outer tantalum tube 100 and is coaxially arranged with the outer tantalum tube 100, and the spray head 300 includes coaxially arranged first cone 310 and second cone 320;The first cone 310 and the second cone 320 are both hollow cone bodies with the diameter of bottom surface greater than the diameter of top surface, the length of the second cone 320 is greater than the length of the first cone 310, the bottom surface of the first cone 310 is connected and communicated with the bottom surface of the second cone 320, the top surface of the first cone 310 is connected and communicated with the one end of the inner tantalum tube 200, the top surface of the second cone 320 is equipped with sealing plate 330, the second cone 320 is fixedly connected with the inner wall of the outer tantalum tube 100 through a plurality of rib plates 340, a plurality of rib plates 340 are arranged along the axial direction of the second cone 320 and are evenly distributed on the surface of the second cone 320, and a plurality of small holes 321 are evenly distributed on the surface of the second cone 320 between adjacent two rib plates 340.
[0024] The utility model discloses a kind of concentrated sulfuric acid distributors for preparing chlorine dioxide, the outer tantalum tube 100 is installed at the inlet of reactor circulating pump, the outer tantalum tube flange 110 of the one end of the outer tantalum tube 100 is connected with reactor circulating pump inlet flange using bolt, nut and gasket, the outer tantalum tube flange 110 of the other end of the outer tantalum tube 100 is connected with reactor circulating pipe flange, the inner tantalum tube flange 210 is connected with concentrated sulfuric acid supply pipe flange, concentrated sulfuric acid enters the spray head 300 by the inner tantalum tube 200, and it is sprayed out by a plurality of small holes 321 on the surface of the second cone 320, while under the action of mother liquor circulating pump, reaction liquid flows from the first cone 310 side to the second cone 320 side at high speed, and reaction liquid forms turbulent flow when passing through the first cone 310, and is fully and uniformly mixed with concentrated sulfuric acid sprayed from small hole 321.The utility model can effectively utilize the flow rate of reaction liquid, so that concentrated sulfuric acid solution is evenly distributed, avoid the decomposition of chlorine dioxide due to local acidity being too high, and then improve the chlorine dioxide yield of device.
[0025] Please refer to Fig. 2In the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, two ends of the outer tantalum tube 100 are equipped with outer tantalum tube flanging 120, two outer tantalum tube flanges 110 are sleeved on the outer tantalum tube 100 and are slidably connected with the outer tantalum tube 100, and two outer tantalum tube flanges 110 are matched with two outer tantalum tube flanging 120 respectively.The inner tantalum tube 200 is located at one end of the outer tantalum tube 100 outside and is equipped with inner tantalum tube flanging 220, the inner tantalum tube flange 210 is sleeved on the inner tantalum tube 200 and is slidably connected with the inner tantalum tube 200, and the inner tantalum tube flange 210 is matched with the inner tantalum tube flanging 220.
[0026] Please refer to Fig. 2 In the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, the inner tantalum tube 200 is vertically arranged with the outer tantalum tube 100, one end of the inner tantalum tube 200 inside the outer tantalum tube 100 is equipped with elbow 400, and the end of the elbow 400 is connected with the top surface of the first cone 310 and is communicated.The taper of the first cone 310 is twice the taper of the second cone 320.The elbow 400 is 90 elbow, so that space and material can be saved.
[0027] Please refer to Figs. 1-3 In the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, the two ends of the plurality of rib plates 340 are vertically fixedly connected with the surface of the second cone 320 and the outer tantalum tube 100 respectively.One end of the plurality of rib plates 340 is located at the sealing plate 330 of the second cone 320, and the width of the plurality of rib plates 340 is 0.3-0.5 times the length of the second cone 320.The rib plate 340 is 3, and two rows of small holes 321 are arranged on the second cone 320 along the axial direction of the second cone 320 between the adjacent two rib plates 340, and the number of small holes 321 in each row is 5.Of course, the number of small holes 321 can be increased or reduced according to the length of the second cone 320, so as to match the addition amount of concentrated sulfuric acid.
[0028] Please refer to Figs. 1-3 In the utility model a kind of concentrated sulfuric acid distributor for preparing chlorine dioxide, the plurality of small holes 321 are vertically arranged on the surface of the second cone 320.The diameter of the plurality of small holes 321 is 3-5mm.
[0029] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.
Claims
1. A concentrated sulphuric acid distributor for the production of chlorine dioxide, characterised in that, The utility model provides a kind of outer thimble, the outer thimble is provided with outer thimble flange on both ends, and the outer thimble flange is provided with a plurality of first connecting holes. The utility model provides a kind of inner thimble, one end of the inner thimble is located at the outside of the outer thimble, the other end of the inner thimble is located at the inside of the outer thimble, the outer wall of the inner thimble is fixedly connected with the outer wall of the outer thimble, and the inner thimble flange is provided on the end of the inner thimble located at the outside of the outer thimble, and the inner thimble flange is provided with a plurality of second connecting holes. The utility model provides a kind of spray head, which is arranged in the outer thimble and coaxially arranged with the outer thimble, and the spray head includes coaxially arranged first cone and second cone. The first cone and the second cone are both hollow cones with the diameter of bottom surface larger than the diameter of top surface, the length of the second cone is greater than the length of the first cone, the bottom surface of the first cone is connected and communicated with the bottom surface of the second cone, the top surface of the first cone is connected and communicated with one end of the inner thimble, the top surface of the second cone is provided with sealing plate, the second cone is fixedly connected with the inner wall of the outer thimble through a plurality of rib plates, a plurality of rib plates are arranged along the axial direction of the second cone and uniformly distributed on the surface of the second cone, and a plurality of small holes are uniformly distributed on the surface of the second cone between adjacent two rib plates. Both ends of the outer thimble are provided with outer thimble turnups, and the outer thimble flanges are sleeved on the outer thimble and slidably connected with the outer thimble, and the outer thimble flanges are matched with the outer thimble turnups respectively.
2. A concentrated sulphuric acid distributor for the production of chlorine dioxide as claimed in claim 1, wherein, The end of the inner thimble located at the outside of the outer thimble is provided with inner thimble turnup, the inner thimble flange is sleeved on the inner thimble and slidably connected with the inner thimble, and the inner thimble flange is matched with the inner thimble turnup.
3. A concentrated sulphuric acid distributor for the production of chlorine dioxide as claimed in claim 1, wherein, The inner thimble is vertically arranged with the outer thimble, one end of the inner thimble located at the inside of the outer thimble is provided with elbow, and the end of the elbow is connected and communicated with the top surface of the first cone.
4. A concentrated sulphuric acid distributor for the production of chlorine dioxide as claimed in claim 1, wherein, The taper of the first cone is twice the taper of the second cone.
5. A concentrated sulphuric acid distributor for the production of chlorine dioxide as claimed in claim 1, wherein, Both ends of a plurality of rib plates are fixedly connected with the surface of the second cone and the outer thimble perpendicularly respectively.
6. A concentrated sulphuric acid distributor for the production of chlorine dioxide as claimed in claim 1, wherein, One end of a plurality of rib plates is located at the sealing plate of the second cone, and the width of a plurality of rib plates is 0.3-0.5 times the length of the second cone.
7. A concentrated sulphuric acid distributor for the production of chlorine dioxide as claimed in claim 6, wherein, There are three rib plates, two rows of small holes are arranged along the axial direction of the second cone on the second cone between adjacent two rib plates, and the number of small holes in each row is five.
8. A concentrated sulphuric acid distributor for the production of chlorine dioxide as claimed in claim 7, wherein, A plurality of small holes are vertically arranged on the surface of the second cone.
9. A concentrated sulphuric acid distributor for the production of chlorine dioxide as claimed in claim 1, wherein, The diameter of a plurality of small holes is 3-5 mm.
10. A concentrated sulphuric acid distributor for the production of chlorine dioxide as claimed in claim 1, wherein,