CN117046404B - Chlorine gas distribution device and method of chlorination reactor - Google Patents
Chlorine gas distribution device and method of chlorination reactor Download PDFInfo
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- CN117046404B CN117046404B CN202311303564.8A CN202311303564A CN117046404B CN 117046404 B CN117046404 B CN 117046404B CN 202311303564 A CN202311303564 A CN 202311303564A CN 117046404 B CN117046404 B CN 117046404B
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- 238000005660 chlorination reaction Methods 0.000 title claims abstract description 50
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 115
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000460 chlorine Substances 0.000 claims abstract description 57
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- -1 photoinitiator Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a chlorine gas distribution device and a chlorine gas distribution method for a chlorination reactor, wherein the chlorination reactor is provided with a cylinder body extending along the vertical direction, the chlorine gas distribution device is positioned in the reactor and comprises a gas transmission vertical pipe extending along the vertical direction and a plurality of gas transmission horizontal pipes extending along the horizontal direction which are mutually communicated, the gas transmission horizontal pipes are arranged at the top of the gas transmission vertical pipe, the gas transmission horizontal pipes are equidistantly provided with distribution horizontal pipes, two ends of each distribution horizontal pipe respectively form a gas transmission end and a closed end, wherein the gas transmission end is communicated with the gas transmission horizontal pipe, and gas distribution strip seams are arranged on the distribution horizontal pipes. The chlorine distribution device comprises a plurality of gas transmission transverse pipes, wherein the gas transmission vertical pipes are provided with the gas transmission transverse pipes, the gas transmission transverse pipes are equidistantly provided with the distribution transverse pipes, and the cross sectional areas of the inner cavities of the distribution transverse pipes are determined through a distribution method, so that the speeds of chlorine sprayed out by gas distribution strip seams are basically equal, the chlorine distribution in a chlorination reactor is ensured to be uniform, the chlorination reaction effect is improved, and the performance of products is improved.
Description
Technical Field
The invention relates to a chlorine gas distribution device and method of a chlorination reactor.
Background
The chlorination reaction is generally a reaction in which chlorine is introduced into the compound. The chlorination reaction is divided into three types: displacement chlorination, addition chlorination and oxidative chlorination, all of which are involved in the chlorination process. The chlorination process is a common chemical process, and the product has various kinds and is widely applied to the fields of medicine, pesticide, photoinitiator, absorbent manufacturing and the like. Chlorinated products are of great importance in the chemical industry. The chlorination reaction is an exothermic reaction requiring extra attention to the temperature profile of the reactor.
In the chlorination reactor, the chlorine distribution device is a core device playing an important role. If the chlorine gas distribution device distributes the chlorine gas unevenly in the reactor, when the gas-liquid contact reaction is carried out, the area with more chlorine gas distribution amount can cause local severe reaction, excessive chlorine gas can not completely react, and the chlorine gas enters the alkali liquor absorption tower along with tail gas to generate sodium hypochlorite byproducts, so that the consumption of the chlorine gas and liquid alkali is increased, and the production cost is increased. The problem of incomplete reaction exists in the area with less chlorine distribution, and the production efficiency is affected.
Chinese patent CN115193347a discloses a chlorine distributor and a chlorine distribution method for use in a chlorination reactor, which improves the problem of inconsistent chlorine flow rate of each gas distribution hole by changing the pore diameter of the gas distribution hole. However, the size of the gas distribution holes is different, and the flow rate of the chlorine is the same, that is, the distribution speed of the chlorine of each gas distribution hole is not uniform. The gas-liquid contact reaction effect in the chlorination reactor is not only related to the flow rate of chlorine, but also influenced by the flow rate of chlorine.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The invention aims to solve the technical problem that chlorine in a chlorination reactor is unevenly distributed in the reactor.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a chlorine distributing device of chlorination reactor, chlorination reactor has the cylinder that extends along vertical direction, chlorine distributing device is located the reactor, including the gas transmission standpipe that extends along vertical direction and a plurality of gas transmission violently manage that extend along the horizontal direction of mutual intercommunication, the gas transmission violently manage the top at the gas transmission standpipe that sets up, be provided with the horizontal pipe of distribution on the gas transmission violently manage the equidistance, the both ends of each horizontal pipe of distribution form gas transmission end and blind end respectively, wherein the gas transmission end communicates the horizontal pipe of gas transmission, be provided with the gas distribution strip seam on the horizontal pipe of distribution.
As a preferred embodiment of the chlorine distributing device of the chlorination reactor according to the present disclosure, wherein: the horizontal distribution pipe comprises an upper horizontal distribution pipe and a lower horizontal distribution pipe, and the upper horizontal distribution pipe corresponds to the lower horizontal distribution pipe one by one in the vertical direction, so that chlorine gas enters the reactor more uniformly.
As a preferred embodiment of the chlorine distributing device of the chlorination reactor according to the present disclosure, wherein: the gas distribution strip seam of the upper distribution horizontal pipe is arranged on the upper side of the upper distribution horizontal pipe, the gas distribution strip seam of the lower distribution horizontal pipe is arranged on the lower side of the lower distribution horizontal pipe, and in the vertical direction, the gas distribution strip seam of the upper distribution horizontal pipe corresponds to the gas distribution strip seam of the lower distribution horizontal pipe in an up-down mode, so that chlorine gas is sprayed out simultaneously in the up-down direction.
As a preferred embodiment of the chlorine distributing device of the chlorination reactor according to the present disclosure, wherein: the gas distribution strip seams on the horizontal distribution pipes are all positioned on the same horizontal plane, so that the chlorine can be uniformly sprayed out.
As a preferred embodiment of the chlorine distributing device of the chlorination reactor according to the present disclosure, wherein: the length of the gas distribution strip seam is equal to the length of the corresponding horizontal distribution pipe, and the width is 0.5 mm-1.5 mm, so that the phenomenon that the gas distribution speed of chlorine is too low or too high due to too wide or too narrow gas distribution strip seam is avoided.
As a preferred embodiment of the chlorine distributing device of the chlorination reactor according to the present disclosure, wherein: the gas transmission transverse pipes are all positioned in the same horizontal plane, and the gas transmission transverse pipes are positioned in the middle of the set liquid level height in the reactor, so that chlorine gas sprayed from the upper gas distribution strip seam is distributed in an upper half liquid level area, and chlorine gas sprayed from the lower gas distribution strip seam is distributed in a lower half liquid level area.
A chlorine distributing method for chloridizing reactor features that the numbers of upper transverse tubes on gas delivering tube are sequentially 1, 2, …, i, i+1, … and N from outside to inside 0 The length of the transverse distribution pipe on the ith is in accordance with the formula (I),
in formula (one): l (L) i Length (m) of the i-th distributed transverse tube, D 0 Is the inner diameter (m), d of the barrel of the chlorination reactor 0 Is the center distance (m), N of the pipe bodies of the adjacent upper distributed transverse pipes 0 The number of the transverse pipes is distributed on the gas transmission transverse pipe.
As a preferred embodiment of the method for chlorine distribution in a chlorination reactor according to the present disclosure, wherein: the cross section of the inner cavity of the horizontal distribution pipe is square, and the horizontal distribution pipe on the ith is a along the lateral side of the reactor i Along the vertical side of the reactor, set as b i The cross section of the inner cavity of the upper distribution transverse tube on the gas transmission end of the upper distribution transverse tube is a along the transverse edge of the reactor i,0 The edge along the axial direction of the reactor is denoted by b i,0 ，a i,0 = b i,0 The cross section of the inner cavity of the gas transmission end of the upper distribution transverse pipe is square, and the cross section of the inner cavity of the ith upper distribution transverse pipe, which is arranged at the position of the upper distribution transverse pipe, which is x meters away from the gas transmission end of the upper distribution transverse pipe, is set as a along the transverse side of the reactor i,x Along the vertical side of the reactor, set as b i,x The cross section of the inner cavity of the distribution transverse tube is along the direction from the gas transmission end to the closed end, a i,x Will remain unchanged all the time, a i,x = a i,0 And b i,x Will gradually become smaller until the closed end is 0, b i,Li =0，L i Is the length of the upper distributed transverse tube;
the cross section size of the inner cavity of the gas transmission end of each upper distribution horizontal pipe except the No. 1 upper distribution horizontal pipe is determined by a formula (II):
in the formula (II): s is the cross section area of the inner cavity of the gas transmission transverse pipe; μ is the flow coefficient; l (L) i-1 The length of the transverse pipes distributed on the ith-1; b i-1,0 The side length of the cross section of the inner cavity of the gas transmission end of the i-1-th upper distributed transverse pipe; b i,0 The side length of the cross section of the inner cavity of the gas transmission end of the i-th upper distributed transverse pipe; lambda (lambda) h The on-way resistance coefficient of the gas transmission transverse pipe is determined according to the flow velocity in the gas transmission transverse pipe and the equivalent diameter of the gas transmission transverse pipe; d (D) h Is equivalent diameter of the gas transmission transverse pipe.
As a preferred embodiment of the method for chlorine distribution in a chlorination reactor according to the present disclosure, wherein: the cross section of the inner cavity of the i-th upper distribution transverse tube at the position of the upper distribution transverse tube x meters away from the gas transmission end of the upper distribution transverse tube is b along the axial side of the reactor i,x The value of which conforms to the formula (III),
in formula (III): e is a natural index; ln is the natural logarithm; lambda (lambda) i The on-way resistance coefficient of the transverse tube distributed on the ith is determined according to the flow velocity in the tube and the equivalent diameter of the tube; x is the distance from the inner cavity cross section of the upper transverse distribution pipe to the gas transmission end of the upper transverse distribution pipe, x=0 for the inner cavity cross section of the gas transmission end of the upper transverse distribution pipe, and x=l for the inner cavity cross section of the closed end of the upper transverse distribution pipe i 。
The invention has the beneficial effects that: the chlorine distribution device comprises a plurality of gas transmission transverse pipes, wherein the gas transmission vertical pipes are provided with the gas transmission transverse pipes, the gas transmission transverse pipes are equidistantly provided with the distribution transverse pipes, and the cross sectional areas of the inner cavities of the distribution transverse pipes are determined through a distribution method, so that the speeds of chlorine sprayed out by gas distribution strip seams are basically equal, the chlorine distribution in a chlorination reactor is ensured to be uniform, the chlorination reaction effect is improved, and the performance of products is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of the location structure of a chlorination reactor and chlorine distribution device.
FIG. 2 is a schematic perspective view of a chlorine distributing device of a chlorination reactor.
Fig. 3 is a top view of fig. 1 of a chlorine distribution device of a chlorination reactor.
FIG. 4 is a schematic view of the position and structure of a gas-conveying horizontal pipe and its attached upper horizontal pipe and distributing slit of a chlorine distributing device of a chlorination reactor.
FIG. 5 is a graph showing a comparison between the experimental value and the target value of the chlorine flow rate of each horizontal distribution pipe.
In the figure: 1. a gas delivery standpipe; 2. a gas transmission transverse pipe; 3. a horizontal distribution pipe; 3-1, the transverse pipes are distributed on the No. 1; 3-2, the transverse pipes are distributed on the No. 2; 3-3, the transverse pipes are distributed on the No. 3; 3-4, the transverse pipes are distributed on the No. 4; 4. a gas distribution strip seam; 5. a cylinder body.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 3, in a first embodiment of the present invention, a chlorine distributing device of a chlorination reactor is provided, the chlorination reactor has a cylinder 5 extending along a vertical direction, the chlorine distributing device is located in the reactor and includes a gas delivery vertical pipe 1 extending along the vertical direction and a plurality of gas delivery horizontal pipes 2 extending along a horizontal direction, which are mutually communicated, the gas delivery horizontal pipes 2 are disposed at the top of the gas delivery vertical pipe 1, the gas delivery horizontal pipes 2 are equidistantly provided with distribution horizontal pipes 3, two ends of each distribution horizontal pipe 3 respectively form a gas delivery end and a closed end, wherein the gas delivery end is communicated with the gas delivery horizontal pipe 2, and a gas distribution slit 4 is disposed on the distribution horizontal pipe 3.
The chlorination reactor is provided with a cylinder 5 extending along the vertical direction as a reaction container, a chlorine distribution device is arranged at the bottom of the center in the reactor and mainly comprises a vertical gas transmission vertical pipe 1 and a plurality of horizontal gas transmission horizontal pipes 2 which are mutually communicated and extend along the vertical direction, the horizontal gas transmission pipe 2 is fixedly arranged at the top of the vertical gas transmission vertical pipe 1 and is communicated with the inside of the vertical gas transmission vertical pipe 1, four horizontal gas distribution pipes 3 which are equidistantly arranged are arranged on the horizontal gas transmission pipe 2, two ends of each horizontal gas distribution pipe 3 are respectively provided with a gas transmission end and a closed end, wherein the gas transmission end is communicated with the horizontal gas transmission pipe 2, gas distribution slits 4 are formed in the horizontal gas distribution pipes 3, and the chlorine enters the horizontal gas transmission pipe 2 through the horizontal gas transmission vertical pipe 1 and is injected into the horizontal gas distribution pipes 3 from the horizontal gas distribution slits 4 on the horizontal gas distribution pipes 3 so as to enable the chlorine to be uniformly injected into the chlorine reactor.
Specifically, the horizontal distribution pipe 3 comprises an upper horizontal distribution pipe 3 and a lower horizontal distribution pipe 3, and in the vertical direction, the upper horizontal distribution pipe 3 corresponds to the lower horizontal distribution pipe 3 one by one.
The horizontal tube 3 of distribution comprises horizontal tube 3 of last distribution and horizontal tube 3 of lower distribution, and horizontal tube 3 of going up distribution and horizontal tube 3 of lower distribution are installed on gas-supply horizontal tube 2 in vertical direction symmetry, and go up horizontal tube 3 of distribution and horizontal tube 3 of lower distribution one-to-one to make the chlorine more even enter into in the reactor.
The gas distribution strip seam 4 of the upper distribution horizontal pipe 3 is arranged on the upper side of the upper distribution horizontal pipe 3, the gas distribution strip seam 4 of the lower distribution horizontal pipe 3 is arranged on the lower side of the lower distribution horizontal pipe 3, and in the vertical direction, the gas distribution strip seam 4 of the upper distribution horizontal pipe 3 corresponds to the position of the gas distribution strip seam 4 of the lower distribution horizontal pipe 3 up and down, so that chlorine gas is sprayed out simultaneously in the upper direction and the lower direction, and a better gas-liquid contact reaction effect is achieved.
Further, the gas distribution strip slits 4 on the horizontal distribution pipes 3 are all positioned on the same horizontal plane, namely, the gas distribution strip slits 4 on all the upper horizontal distribution pipes 3 are positioned on the same horizontal plane, and the gas distribution strip slits 4 on all the lower horizontal distribution pipes 3 are positioned on the same horizontal plane, so that the uniform ejection of chlorine can be ensured; and the length of the gas distribution strip slit 4 formed on the horizontal distribution tube 3 is equal to the length of the horizontal distribution tube 3 corresponding to the gas distribution strip slit, preferably, the width of the gas distribution strip slit 4 is 0.5 mm-1.5 mm in the embodiment, so as to avoid too low or too high gas distribution speed of chlorine caused by too wide or too narrow gas distribution strip slit 4 and ensure that the chlorine can uniformly flow out of the gas distribution strip slit 4.
The gas transmission horizontal pipes 2 are all positioned in the same horizontal plane, and the gas transmission horizontal pipes 2 are positioned in the middle position of the set liquid level height in the reactor, so that chlorine gas sprayed from the upper gas distribution strip slit 4 is distributed in an upper half liquid level area, and chlorine gas sprayed from the lower gas distribution strip slit 4 is distributed in a lower half liquid level area.
Example 2
Referring to FIGS. 1 to 5, a second embodiment of the present invention provides a chlorine distribution method for use in a chlorination reactor, wherein the numbers of the upper distribution cross pipes 3 on the gas transmission cross pipe 2 are sequentially 1, 2, …, i, i+1, …, N from outside to inside along the radial direction of the reactor cylinder 5 0 The length of the transverse distribution pipe 3 on the ith is in accordance with the formula (I),
in formula (one): l (L) i For the length (m) of the i-th upper distributed transverse tube 3, D 0 The inner diameter (m), d) of the barrel 5 of the chlorination reactor 0 For the center distance (m), N of the pipe bodies of the adjacent upper distribution transverse pipes 3 0 For the number of upper distribution cross pipes 3 on the gas transmission cross pipe 2.
In the present embodiment, D 0 =2m，d 0 =0.2m，N 0 =4。
According to the formula (I), the length L of the i-th upper distribution cross tube 3 of the embodiment can be obtained i The values of (2) are as follows in table 1:
in Table 1, the first digit in the number 3 of the upper cross distribution pipe represents the category, i.e., 3 represents the upper cross distribution pipe 3, the second digit represents the position attribute, e.g., 3-1 represents the upper cross distribution pipe No. 1, and so on, as shown in FIG. 4, the upper cross distribution pipe No. 1 3-1, the upper cross distribution pipe No. 2 3-2, the upper cross distribution pipe No. 3-3, and the upper cross distribution pipe No. 4 3-4.
After the length of each upper cross-distribution pipe 3 is determined, the cross-sectional dimensions of the inner cavity of each upper cross-distribution pipe 3 are determined, the cross-section of the inner cavity of each cross-distribution pipe 3 is square, and the i-th upper cross-distribution pipe 3 is set as a along the lateral side of the reactor i Along the vertical side of the reactor, set as b i Each upper transverse distribution pipe 3 has the same cross section as the inner cavity of the opposite lower transverse distribution pipe 3.
The cross section of the inner cavity of the upper distribution horizontal pipe 3 on the gas transmission end of the upper distribution horizontal pipe 3 is set as a along the lateral side of the reactor i,0 The edge along the axial direction of the reactor is denoted by b i,0 ，a i,0 = b i,0 The cross section of the inner cavity of the gas transmission end of the upper distribution horizontal pipe 3 is square.
The cross section of the inner cavity of the upper distribution horizontal pipe 3 at the position of the upper distribution horizontal pipe 3, which is x meters away from the gas transmission end, is set as a along the lateral side of the reactor i,x Along the vertical side of the reactor, set as b i,x The cross section of the inner cavity of the distribution transverse tube 3 is along the direction from the gas delivery end to the closed end, a i,x Will remain unchanged all the time, a i,x = a i,0 And b i,x Will gradually become smaller until the closed end is 0, b i,Li =0，L i For the length of the upper distribution cross tube 3.
Specifically, the cross-sectional dimensions of the inner cavities of the gas delivery ends of the upper distribution horizontal tubes 3 except the upper distribution horizontal tube 3 of the No. 1 are determined by the formula (II):
in the formula (II): s is the cross section area of the inner cavity of the gas transmission transverse pipe 2; μ is the flow coefficient; l (L) i-1 The length of the transverse tube 3 is distributed on the ith-1; b i-1,0 The side length of the cross section of the inner cavity of the gas transmission end of the horizontal pipe 3 is distributed on the ith-1; b i,0 The side length of the cross section of the inner cavity of the gas transmission end of the i-th upper distribution horizontal pipe 3; lambda (lambda) h The resistance coefficient along the way of the gas transmission transverse pipe 2 is determined according to the flow velocity in the gas transmission transverse pipe 2 and the equivalent diameter of the gas transmission transverse pipe 2; d (D) h Is equivalent diameter of the gas transmission transverse pipe 2.
b 1,0 The side length of the cross section of the inner cavity of the gas transmission end of the transverse tube 3 distributed on the No. 1 is b in the embodiment 1,0 =0.015，S=0.02×0.02㎡，μ=0.65，λ h =0.042，D h =0.02。
According to formula (II), the side lengths of the cross sections of the inner cavities of the gas delivery ends of the distribution horizontal tubes 3 on the numbers 2, 3 and 4 of the present embodiment can be obtained as shown in Table 2 below:
as described above, the cross section of the inner cavity of the upper distribution horizontal tube 3 at the position x m away from the gas delivery end of the upper distribution horizontal tube 3 is a along the lateral side of the reactor i,x The method comprises the steps of carrying out a first treatment on the surface of the The cross section of the inner cavity of the distribution transverse tube 3 is along the direction from the gas delivery end to the closed end, a i,x Will remain unchanged all the time, a i,x = a i,0 The method comprises the steps of carrying out a first treatment on the surface of the For the upper distribution horizontal tube 3 of No. 1, a 1,x = a 1,0 =b 1,0 =15 mm; as can be seen from Table 2, for the upper distribution horizontal tube No. 2 3, a 2,x = a 2,0 =b 2,0 =13.63 mm; for the upper distributed transverse tube 3, a 3,x = a 3,0 =b 3,0 =11.11 mm; for the No. 4 upper distribution horizontal tube 3, a 4,x = a 4,0 =b 4,0 =6.89mm。
As can be seen from fig. 5, the side length of the cross section of the inner cavity of the gas transmission end of the upper transverse distribution pipe 3 is determined by the formula (two), so that the flow rate of chlorine gas reaching each transverse distribution pipe 3 through the gas transmission pipe 2 can be ensured to meet the requirement.
As described above, the cross section of the inner cavity of the upper distribution horizontal tube 3 at the position x meters away from the gas transmission end of the upper distribution horizontal tube 3 is b along the axial side of the reactor i,x The value of which conforms to the formula (III),
in formula (III): e is a natural index; ln is the natural logarithm; lambda (lambda) i The on-way resistance coefficient of the transverse distribution pipe 3 on the ith is determined according to the flow velocity in the pipe and the equivalent diameter of the pipe; x is the distance from the inner cavity cross section of the upper transverse distribution pipe 3 to the gas transmission end of the upper transverse distribution pipe 3, x=0 for the inner cavity cross section of the gas transmission end of the upper transverse distribution pipe 3, and x=l for the inner cavity cross section of the closed end of the upper transverse distribution pipe 3 i 。
In the present embodiment, lambda 1 =0.047，λ 2 =0.05，λ 3 =0.054，λ 4 =0.063。
According to the formula (III), the cross section of the inner cavity of the upper distribution horizontal tube 3 of the embodiment 1 can be obtained along the edge b of the axial direction of the reactor 1,x Values. Table 3 below:
according to the formula (III), the cross section of the inner cavity of the upper distribution horizontal tube 3 of the No. 2 of the embodiment can be obtained along the edge b of the axial direction of the reactor 2,x Values. Table 4 below:
according to the formula (III), the cross section of the inner cavity of the upper distribution horizontal tube 3 of the embodiment 3 can be obtained along the edge b of the axial direction of the reactor 3,x Values. Table 5 below:
according to the formula (III), the cross section of the inner cavity of the upper distribution horizontal tube 3 of the No. 4 of the embodiment can be obtained along the edge b of the axial direction of the reactor 4,x Values. Table 6 below:
to examine the effect of the examples, 3 speed measurement points were set on each gas distribution slit 4, and there were 96 gas distribution slits 4 from the chlorine distribution device, and 288 speed measurement points in total. The results are shown in Table 7 below, and the chlorine flow rate at the gas distribution slit 4 of this example is substantially uniform.
By changing the sectional area of the horizontal distribution pipe 3, namely the sectional area of the inner cavity in the process of chlorine flowing through the horizontal distribution pipe 3, the uniformity of the gas distribution speed of the chlorine is realized, and the standard deviation of the flow speed of the chlorine in the embodiment is only 0.19m/s, so that the chlorine is ensured to be uniformly distributed in the chlorination reactor, the chlorination reaction effect is improved, and the performance of a product is improved.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (7)
1. The chlorine distribution device is characterized by comprising a vertical gas transmission vertical pipe and a plurality of horizontal gas transmission horizontal pipes which are mutually communicated and extend in the vertical direction, wherein the horizontal gas transmission pipes are arranged at the top of the vertical gas transmission pipe, the horizontal gas transmission pipes are equidistantly provided with distribution horizontal pipes, two ends of each distribution horizontal pipe respectively form a gas transmission end and a closed end, the gas transmission ends are communicated with the horizontal gas transmission pipes, and gas distribution strip seams are formed on the horizontal distribution pipes;
the horizontal distribution pipes comprise upper horizontal distribution pipes and lower horizontal distribution pipes, and the upper horizontal distribution pipes and the lower horizontal distribution pipes are in one-to-one correspondence in the vertical direction;
the serial numbers of the upper distribution transverse pipes on the gas transmission transverse pipes are sequentially 1, 2, …, i, i+1, … and N from outside to inside along the radial direction of the reactor cylinder body 0 The length of the transverse distribution pipe on the ith is in accordance with the formula (I),
in formula (one): l (L) i For the length of the transverse tube distributed on the ith, D 0 Is the inner diameter d of the barrel of the chlorination reactor 0 Is the center distance of the pipe bodies of the adjacent upper distributed transverse pipes, N 0 The number of the upper distributed transverse pipes on the gas transmission transverse pipe is as follows;
the cross section of the inner cavity of the horizontal distribution pipe is square, and the horizontal distribution pipe on the ith is a along the lateral side of the reactor i Along the vertical side of the reactor, set as b i The cross section of the inner cavity of the upper distribution transverse tube on the gas transmission end of the upper distribution transverse tube is a along the transverse edge of the reactor i,0 The edge along the axial direction of the reactor is denoted by b i,0 ，a i,0 ＝b i,0 The cross section of the inner cavity of the gas transmission end of the upper distribution transverse pipe is square, and the cross section of the inner cavity of the ith upper distribution transverse pipe, which is arranged at the position of the upper distribution transverse pipe, which is x meters away from the gas transmission end of the upper distribution transverse pipe, is set as a along the transverse side of the reactor i,x Along the vertical side of the reactor, set as b i,x The cross section of the inner cavity of the distribution transverse tube is along the direction from the gas transmission end to the closed end, a i,x Will remain unchanged all the time, a i,x ＝a i,0 And b i,x Will gradually become smaller until the closed end is 0, b i,Li ＝0，L i Is the length of the upper distributed transverse tube;
the cross section size of the inner cavity of the gas transmission end of each upper distribution horizontal pipe except the No. 1 upper distribution horizontal pipe is determined by a formula (II):
in the formula (II): s is the cross section area of the inner cavity of the gas transmission transverse pipe; μ is the flow coefficient; l (L) i-1 The length of the transverse pipes distributed on the ith-1; b i-1,0 The side length of the cross section of the inner cavity of the gas transmission end of the i-1-th upper distributed transverse pipe; b i,0 The side length of the cross section of the inner cavity of the gas transmission end of the i-th upper distributed transverse pipe; lambda (lambda) h The on-way resistance coefficient of the gas transmission transverse pipe is determined according to the flow velocity in the gas transmission transverse pipe and the equivalent diameter of the gas transmission transverse pipe; d (D) h Is equivalent diameter of the gas transmission transverse pipe.
2. The chlorine distributing apparatus for use in a chlorination reactor according to claim 1, wherein the gas distributing slit of the upper horizontal distribution pipe is provided on an upper side of the upper horizontal distribution pipe, the gas distributing slit of the lower horizontal distribution pipe is provided on a lower side of the lower horizontal distribution pipe, and the gas distributing slit of the upper horizontal distribution pipe vertically corresponds to the gas distributing slit of the lower horizontal distribution pipe.
3. The chlorine distributing apparatus for use in a chlorination reactor of claim 2, wherein the gas distribution slits in the horizontal distribution pipe are all located on the same horizontal plane.
4. The chlorine distributing device for chlorination reactor according to claim 2, wherein the length of the gas distribution slit is equal to the length of the corresponding horizontal distribution tube, and the width is 0.5mm to 1.5mm.
5. The chlorine distribution device for use in a chlorination reactor of claim 1, wherein each gas delivery cross tube is in the same horizontal plane, and each gas delivery cross tube is located in the middle of a set liquid level in the reactor.
6. The chlorine distributing apparatus for use in a chlorination reactor according to claim 1, wherein the cross section of the inner cavity of the upper distribution cross pipe of the ith row, at a distance of x m from the gas delivery end thereof, is b along the axial side of the reactor i,x The value of which conforms to the formula (III),
in formula (III): e is a natural index; ln is the natural logarithm; lambda (lambda) i The on-way resistance coefficient of the transverse tube distributed on the ith is determined according to the flow velocity in the tube and the equivalent diameter of the tube; x is the distance from the inner cavity cross section of the upper transverse distribution pipe to the gas transmission end of the upper transverse distribution pipe, x=0 for the inner cavity cross section of the gas transmission end of the upper transverse distribution pipe, and x=l for the inner cavity cross section of the closed end of the upper transverse distribution pipe i 。
7. A chlorine gas distribution method using the chlorine gas distribution apparatus for chlorination reactor according to any one of claims 1 to 6, wherein the numbers of each upper distribution cross pipe on the gas transmission cross pipe are 1, 2, …, i, i+1, …, N in order from outside to inside in the radial direction of the reactor cylinder 0 The length of the transverse distribution pipe on the ith is in accordance with the formula (I),
in formula (one): l (L) i For the length of the transverse tube distributed on the ith, D 0 Is the inner diameter d of the barrel of the chlorination reactor 0 Is the center distance of the pipe bodies of the adjacent upper distributed transverse pipes, N 0 The number of the upper distributed transverse pipes on the gas transmission transverse pipe is as follows;
the cross section of the inner cavity of the horizontal distribution pipe is square, for the No. i upper horizontal distribution pipe,the side along the transverse direction of the reactor is designated as a i Along the vertical side of the reactor, set as b i The cross section of the inner cavity of the upper distribution transverse tube on the gas transmission end of the upper distribution transverse tube is a along the transverse edge of the reactor i,0 The edge along the axial direction of the reactor is denoted by b i,0 ，a i,0 ＝b i,0 The cross section of the inner cavity of the gas transmission end of the upper distribution transverse pipe is square, and the cross section of the inner cavity of the ith upper distribution transverse pipe, which is arranged at the position of the upper distribution transverse pipe, which is x meters away from the gas transmission end of the upper distribution transverse pipe, is set as a along the transverse side of the reactor i,x Along the vertical side of the reactor, set as b i,x The cross section of the inner cavity of the distribution transverse tube is along the direction from the gas transmission end to the closed end, a i,x Will remain unchanged all the time, a i,x ＝a i,0 And b i,x Will gradually become smaller until the closed end is 0, b i,Li ＝0，L i Is the length of the upper distributed transverse tube;
the cross section size of the inner cavity of the gas transmission end of each upper distribution horizontal pipe except the No. 1 upper distribution horizontal pipe is determined by a formula (II):
in the formula (II): s is the cross section area of the inner cavity of the gas transmission transverse pipe; μ is the flow coefficient; l (L) i-1 The length of the transverse pipes distributed on the ith-1; b i-1,0 The side length of the cross section of the inner cavity of the gas transmission end of the i-1-th upper distributed transverse pipe; b i,0 The side length of the cross section of the inner cavity of the gas transmission end of the i-th upper distributed transverse pipe; lambda (lambda) h The on-way resistance coefficient of the gas transmission transverse pipe is determined according to the flow velocity in the gas transmission transverse pipe and the equivalent diameter of the gas transmission transverse pipe; d (D) h The equivalent diameter of the gas transmission transverse pipe;
the cross section of the inner cavity of the i-th upper distribution transverse tube at the position of the upper distribution transverse tube x meters away from the gas transmission end of the upper distribution transverse tube is b along the axial side of the reactor i,x The value of which conforms to the formula (III),
in formula (III): e is a natural index; ln is the natural logarithm; lambda (lambda) i The on-way resistance coefficient of the transverse tube distributed on the ith is determined according to the flow velocity in the tube and the equivalent diameter of the tube; x is the distance from the inner cavity cross section of the upper transverse distribution pipe to the gas transmission end of the upper transverse distribution pipe, x=0 for the inner cavity cross section of the gas transmission end of the upper transverse distribution pipe, and x=l for the inner cavity cross section of the closed end of the upper transverse distribution pipe i 。
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226208A (en) * | 2013-06-06 | 2014-12-24 | 神华集团有限责任公司 | Gas distributor for multiphase flow reactor and multiphase flow reactor |
| CN207024705U (en) * | 2017-06-22 | 2018-02-23 | 四川蓝剑化工（集团）有限责任公司 | A kind of equipment of phosphoric acid for food production removing hydrogen sulfide gas |
| CN115193347A (en) * | 2022-07-28 | 2022-10-18 | 常熟理工学院 | Chlorine distributor used in chlorination reaction kettle and chlorine distribution method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226208A (en) * | 2013-06-06 | 2014-12-24 | 神华集团有限责任公司 | Gas distributor for multiphase flow reactor and multiphase flow reactor |
| CN207024705U (en) * | 2017-06-22 | 2018-02-23 | 四川蓝剑化工（集团）有限责任公司 | A kind of equipment of phosphoric acid for food production removing hydrogen sulfide gas |
| CN115193347A (en) * | 2022-07-28 | 2022-10-18 | 常熟理工学院 | Chlorine distributor used in chlorination reaction kettle and chlorine distribution method |
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