CN202933693U - Distributor at outlet of lift pipe of series combined fluidized bed - Google Patents
Distributor at outlet of lift pipe of series combined fluidized bed Download PDFInfo
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- CN202933693U CN202933693U CN 201220543000 CN201220543000U CN202933693U CN 202933693 U CN202933693 U CN 202933693U CN 201220543000 CN201220543000 CN 201220543000 CN 201220543000 U CN201220543000 U CN 201220543000U CN 202933693 U CN202933693 U CN 202933693U
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- inversed taper
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Abstract
The utility model provides a distributor at the outlet of a lift pipe of a series combined fluidized bed. The distributor at least comprises a hollow inverted frustum, flow guide inner members and a distribution plate, wherein the flow guide inner members are conical edges or flow guide plates, are connected with the inner surface of the hollow inverted frustum and are arranged into 1-5 rows from the top down; and within the region that De<(0.5-0.8) Dd and De=(0.5-0.8) Dd-Dd, the total of aperture ratios K1 and K2 based on the section of the lift pipe is 20-80 percent, K2/K1=1.1-3.5, and De is the horizontal projection diameter of the distribution plate. The distributor remarkably reduces back-mixing in the outlet region of the lift pipe of the series combined fluidized bed, improves the gas-solid distribution uniformity in the upper bed layer, has a simple structure, is simple for reconstruction of an original device, and can be extensively applied in the petroleum refining and chemical engineering field, the coal chemical industry, the particle combustion field, and the pharmaceutical manufacturing or environment-friendly field.
Description
Technical field
It is riser that the utility model relates to a kind of substructure, superstructure is the tandem compound fluid bed of bed (bubbling bed or turbulent bed or fast bed), be particularly related to a kind of distributor of tandem compound fluid bed leg outlet, belong to petroleum refining and chemical industry, Coal Chemical Industry, particle burning, pharmacy or field of Environment Protection.
Background technology
bottom riser and top bed (bubbling bed, or turbulent bed, or fast bed) tandem compound fluid bed, gas-solid mixture has the shorter time of staying in the riser of bottom, has the relatively long time of staying in the bed of top, in riser, reacted gas-solid mixture can enter the top bed and proceed subsequent reactions by the gas-solid distributor that is arranged on leg outlet, this tandem compound structure, can realize the coupling of fast response and long response time on technique, can require to realize fast response district and the regulation and control of slow response region subregion according to process conditions simultaneously in operation.Due to simple in structure, regulation and control flexibly, the tandem compound fluid bed has obtained more application in the techniques such as heavy oil DCC, modification of gasoline while reducing olefin.For complexity parallel-consecutive reaction, when middle product is one of the target product of whole process, just need the strict conditions such as reaction temperature, reaction time, raw material thing and reactant concentration of controlling, to adapt to the generative process of intermediate product, thereby suppress the intermediate product overreaction, reach the maximized purpose of target product productive rate.The tandem compound fluid bed can be realized above-mentioned process take intermediate product as target product, but be arranged on the gas-solid distributor of tandem compound fluid bed leg outlet, obtain in bed the effect of gas-solid distribution preferably except making gas-solid mixture enter the top bed and can make by riser, also Gas-particle Flows in the riser of bottom has been formed certain effect of contraction, cause a certain amount of gas-solid back-mixing, thereby reduced the productive rate of main reaction generation intermediate product, increased simultaneously the productive rate of side reaction product.Current, in industrial design, leg outlet arranges the gas-solid distributor of sprinkle nozzle usually, the method of mainly taking to increase the aperture of gas-solid distributor and percent opening, the pressure drop of reduction gas-solid distributor reduces leg outlet gas-solid back-mixing, but gas-solid distributor aperture is excessive, be unfavorable for supporting the material in the bed of top, realize fluidisation that gas-solid in bed is good and uniform, the gas-solid distributor must mate certain pressure drop again, therefore, depend merely on the method that increases gas-solid distributor aperture and the pressure drop of reduction gas-solid distributor and only can reduce to a certain extent the gas-solid back-mixing.In addition, the sprinkle nozzle distributor of industrial employing, what taked in the different-diameter zone on the distribution grid face is identical percent opening, and the gas-solid mixture that arrives sprinkle nozzle distributor lower face by riser is usually large in the speed near the distribution grid central area, speed near the distribution grid outer edge area is little, thereby few in the quantity of passing through near distribution grid outer edge area gas-solid mixture, cause gas-solid skewness in the bed of top.Inner at distributor, the gas-solid mixture of arrival distribution grid lower face central area is subject to the plate face and bed constraint rear portion turns to the motion of distribution grid outer rim, if the place can not in time pass through distributor in outer rim, will flow into riser downwards along the conical surface, in the middle of causing thus on the leg outlet cross section, back-mixing is little and large near wall place, limit back-mixing, and this situation reducing and the change of essence occurs with solid-gas ratio in riser not.
The utility model content
The purpose of this utility model is, for bottom riser and top bed (for bubbling bed or turbulent bed or fast bed) tandem compound fluid bed provides a kind of distributor that is arranged on leg outlet, by being set in distributor, water conservancy diversion inner member and distribution grid zones of different adopt the way of different percent openings to reduce the leg outlet back-mixing, increase the uniformity that in bed, gas-solid distributes simultaneously.
The purpose of this utility model realizes by following approach:
A kind of distributor of tandem compound fluid bed leg outlet comprises at least: the inversed taper platform of hollow, water conservancy diversion inner member, distribution grid.It is characterized in that: the inversed taper platform upper surface of hollow and lower surface are open ports, the water conservancy diversion inner member is connected to the inversed taper platform inner surface of hollow, distribution grid is connected with the inversed taper platform upper surface sealing of hollow, and on distribution grid, zones of different is provided with the tap hole of the different gas of percent opening and particle.
The inversed taper platform of described hollow is the frustum of a cone or lower surface for the circle upper surface is polygonal polygonal pyramid platform, and the scope of many ribs is 3～8, comprises 8 ribs; Inversed taper platform lower surface diameter Dr equals connected riser diameter, height H=(1.5～4.5) Dr, and the inversed taper platform conical surface of hollow and vertical direction angle α=20 °～70 °.
Described water conservancy diversion inner member is cone rib or deflector, is arranged to 1～5 row from top to bottom along the inversed taper platform inner surface of hollow, is arranged to 2 rows or 2 rows when above, vertical range h1=(0～1.2) Dr between adjacent two row's inner member closest approaches; Same row's water conservancy diversion inner member is closed circular setting or subsection setup along the circumferential sustained height of inversed taper platform inner surface of hollow, and during subsection setup, same row's segments is 2～10, and each is intersegmental apart from L=(0.002～0.5) Dr.
When described water conservancy diversion inner member is taked to bore rib, cone rib cross section is triangle, be solid or hollow structure, the inversed taper platform inner surface angle β of cone rib upper surface and hollow=5 °～(90 °-α), the inversed taper platform inner surface angle γ of cone rib lower surface and hollow=5 °～α, the inversed taper platform inner surface intersecting lens that the cone high h0=of rib (0.1～1) hsin α, h represent to bore rib upper surface and hollow is apart from the vertical range of the inversed taper platform lower surface of hollow.
When described water conservancy diversion inner member is taked deflector, deflector is level or oblique lower setting, the inversed taper platform inner surface angle β of surface and hollow=5 °～(90 °-α), the end that deflector is not connected with the inversed taper platform of hollow is apart from distance h 0=(0.1～1) the hsin α of the inversed taper platform inner surface of hollow, and the inversed taper platform inner surface intersecting lens that h represents deflector and hollow is apart from the vertical range of the inversed taper platform lower surface of hollow.
Described distribution grid is surface plate, epirelief cambered plate or recessed cambered plate, intrados height H 1=(0～1.2) Dr of epirelief cambered plate or recessed cambered plate; In distribution grid floor projection diameter De＜(0.5～0.8) Dd zone based on the percent opening K1=5% in riser cross section～45%, in distribution grid floor projection diameter De=(0.5～0.8) Dd～Dd zone based on the percent opening K2=10% in riser cross section～55%, distribution grid is based on total percent opening K=(K1+K2)=20%～80% of riser sectional area, and K2/K1=1.1～3.5, Dd represents the floor projection diameter of distribution grid.
Described distribution grid perforate direction be vertical, oblique in or oblique outside, the hole be shaped as circle, triangle, rectangle or strip, the center line in hole and vertical direction angle α 1=-1.1 α～+ 1.1 α, the angle that "-" expression vertically is rotated counterclockwise, the angle that "+" expression vertically turns clockwise, α is the inversed taper platform conical surface of hollow and the angle of vertical direction.
On described distribution grid, equilateral triangle arrangement, square arrangement are taked in each hole, regular polygon arranges or along the concentric circles arranged, the limit number of regular polygon is 5～8, comprises 8; Perforate equivalent diameter d0=5mm～30mm, hole center distance S=(2～5) d0.
The utility model compared with prior art exists obvious advantage to be:
(1) distribution grid zone line percent opening is low, the outer edge area percent opening is high, thereby reduced distribution grid outer rim below gas-solid mixture by the resistance of distributor, and then has increased the throughput of outer rim below gas-solid mixture, has reduced the back-mixing of gas-solid mixture.
(2) distribution grid zone line percent opening is low, the outer edge area percent opening is high, and the gas flow that the distribution grid outer edge area is passed through is large, has improved the radial distribution of gas-solid in the bed of top, has improved the radially-arranged uniformity of two-phase in bed.
(3) by the inversed taper platform inner surface in hollow, the water conservancy diversion inner member is set, can form certain inhibition to the gas-solid mixture that flows downward along distributor cone inner surface, and its water conservancy diversion can be entered in the gas-solid main flow that the distributor center makes progress at a high speed, upwards enter bed by distributor again under the gas-solid main flow drives, thereby further reduced the back-mixing of gas-solid mixture.
(4) device structure is simple, easily processing; Existing apparatus is implemented transformation easily, and cost is low.
Description of drawings
Fig. 1 is the parts connection diagram of the distributor of tandem compound fluid bed leg outlet;
Fig. 2 is the structural representation of the distributor embodiment 1 of tandem compound fluid bed leg outlet;
Fig. 3 is the X-X view of Fig. 2;
Fig. 4 is the node I enlarged drawing of Fig. 2;
Fig. 5 is the generalized section of distribution grid 3 in Fig. 2;
Fig. 6 is the node II enlarged drawing of Fig. 5;
Fig. 7 is the cloth hole schematic diagram of distribution grid 3 in Fig. 2;
Fig. 8 is the node III enlarged drawing of Fig. 7;
Fig. 9 is the structural representation of the distributor embodiment 2 of tandem compound fluid bed leg outlet;
Figure 10 is the node V enlarged drawing of Fig. 9;
Figure 11 is the X-X view of Fig. 9;
Figure 12 is the node VI enlarged drawing of Figure 11;
Figure 13 is the generalized section of distribution grid 3 in Fig. 9;
Figure 14 is the cloth hole schematic diagram of distribution grid 3 in Fig. 9;
Figure 15 is the node VII enlarged drawing of Figure 14;
Figure 16 is the structural representation of the distributor embodiment 3 of tandem compound fluid bed leg outlet;
Figure 17 is the X-X view of Figure 16;
Figure 18 is the node IX enlarged drawing of Figure 16;
Figure 19 is the generalized section of distribution grid 3 in Figure 16;
Figure 20 is the cloth hole schematic diagram of distribution grid 3 in Figure 16;
Figure 21 is the nodes X enlarged drawing of Figure 20.
The specific embodiment
Also describe by reference to the accompanying drawings the utility model in detail below by several specific embodiments.
Referring to accompanying drawing 1～and accompanying drawing 8, the distributor 5 of a kind of tandem compound fluid bed leg outlet of the present embodiment comprises at least: the inversed taper platform 1 of hollow, water conservancy diversion inner member 2, distribution grid 3.Inversed taper platform 1 upper surface and the lower surface of hollow are open ports, water conservancy diversion inner member 2 is connected to inversed taper platform 1 inner surface of hollow, distribution grid 3 is connected with the inversed taper platform 1 upper surface sealing of hollow, on distribution grid 3, zones of different is provided with the tap hole of the different gas of percent opening and particle, inversed taper platform 1 lower surface of hollow is connected with riser 6 outlet sealings, and the inversed taper platform 1 that is connected with the hollow of distribution grid 3 stretches in bed 4.
The inversed taper platform 1 of hollow is the frustum of a cone, and lower surface diameter Dr equals connected riser 6 diameters, height H=(1.5～4.5) Dr, and the conical surface and vertical direction angle α=22 °～50 °.
Referring to accompanying drawing 2～accompanying drawing 4, water conservancy diversion inner member 2 be 1 row the cross section be the cone rib of black triangle, the inversed taper platform 1 circumferential sustained height of inner surface along hollow is the closed circular setting, the inversed taper platform 1 inner surface angle β of cone rib upper surface and hollow=10 °～(90 °-α), the inversed taper platform 1 inner surface angle γ=10 °～α of cone rib lower surface and hollow, the inversed taper platform 1 inner surface intersecting lens that the cone high h0=of rib (0.1～0.5) hsin α, h represent to bore rib upper surface and hollow is apart from the vertical range of inversed taper platform 1 lower surface of hollow.
Referring to accompanying drawing 5～accompanying drawing 8, distribution grid 3 is the epirelief cambered plate, intrados height H 1=(0.3～0.7) Dr of epirelief cambered plate; In distribution grid 3 floor projection diameter De＜0.7Dd zone based on the percent opening K1=25% in riser 6 cross sections～35%, in distribution grid 3 floor projection diameter De=0.7Dd～Dd zone based on the percent opening K2=20% in riser 6 cross sections～45%, distribution grid 3 is based on total percent opening K=(K1+K2)=30%～70% of riser 6 sectional areas, and K2/K1=1.3～2.0, Dd represents the floor projection diameter of distribution grid 3.
On distribution grid 3, the equilateral triangle arranged is taked in each hole, opening diameter d0=10mm～20mm, hole center distance S=(3～4) d0.
Referring to accompanying drawing 1, accompanying drawing 9～accompanying drawing 15, the distributor 5 of a kind of tandem compound fluid bed leg outlet of the present embodiment comprises at least: the inversed taper platform 1 of hollow, water conservancy diversion inner member 2, distribution grid 3.Inversed taper platform 1 upper surface and the lower surface of hollow are open ports, water conservancy diversion inner member 2 is connected to inversed taper platform 1 inner surface of hollow, distribution grid 3 is connected with the inversed taper platform 1 upper surface sealing of hollow, on distribution grid 3, zones of different is provided with the tap hole of the different gas of percent opening and particle, inversed taper platform 1 lower surface of hollow is connected with riser 6 outlet sealings, and the inversed taper platform 1 that is connected with the hollow of distribution grid 3 stretches in bed 4.
The inversed taper platform 1 of hollow is the frustum of a cone, and inversed taper platform lower surface diameter Dr equals connected riser 6 diameters, height H=(1.5～4.5) Dr, and the conical surface and vertical direction angle α=20 °～70 °.
Referring to accompanying drawing 9～accompanying drawing 12, water conservancy diversion inner member 2 is that 1 row cross section is the cone rib of three-pointed hollow star, is subsection setup along the inversed taper platform 1 circumferential sustained height of inner surface of hollow, and segments is 2, and is intersegmental apart from L=(0.002～0.1) Dr; The inversed taper platform 1 inner surface angle β of cone rib upper surface and hollow=12 °～(90 °-α), the inversed taper platform 1 inner surface angle γ=10 °～α of lower surface and hollow, high h0=(0.25～0.55) hsin α (, the inversed taper platform 1 inner surface intersecting lens that h represents to bore rib upper surface and hollow is apart from the vertical range of inversed taper platform 1 lower surface of hollow.
When described water conservancy diversion inner member 2 is taked deflector, deflector is level or oblique lower setting, the inversed taper platform inner surface angle β of surface and hollow=5 °～(90 °-α), the end that deflector is not connected with the inversed taper platform of hollow is apart from distance h 0=(0.1～1) the hsin α of the inversed taper platform inner surface of hollow, and the inversed taper platform inner surface intersecting lens that h represents deflector and hollow is apart from the vertical range of the inversed taper platform lower surface of hollow.
Referring to accompanying drawing 13～accompanying drawing 15, distribution grid 3 is the epirelief cambered plate, intrados height H 1=(0.2～0.4) Dr of epirelief cambered plate; In distribution grid 3 floor projection diameter De＜(0.5～0.8) Dd zone based on the percent opening K1=5% in riser 6 cross sections～45%, in distribution grid 3 floor projection diameter De=(0.5～0.8) Dd～Dd zone based on the percent opening K2=10% in riser 6 cross sections～55%, distribution grid 3 is based on total percent opening K=(K1+K2)=20%～80% of riser 6 sectional areas, and K2/K1=1.1～3.5, Dd represents the floor projection diameter of distribution grid.
Referring to accompanying drawing 1, accompanying drawing 16～accompanying drawing 21, the distributor 5 of a kind of tandem compound fluid bed leg outlet of the present embodiment comprises at least: the inversed taper platform 1 of hollow, water conservancy diversion inner member 2, distribution grid 3.Inversed taper platform 1 upper surface and the lower surface of hollow are open ports, water conservancy diversion inner member 2 is connected to inversed taper platform 1 inner surface of hollow, distribution grid 3 is connected with the inversed taper platform 1 upper surface sealing of hollow, on distribution grid 3, zones of different is provided with the tap hole of the different gas of percent opening and particle, inversed taper platform 1 lower surface of hollow is connected with riser 6 outlet sealings, and the inversed taper platform 1 that is connected with the hollow of distribution grid 3 stretches in bed 4.
The inversed taper platform 1 of hollow is the frustum of a cone, and lower surface diameter Dr equals connected riser 6 diameters, height H=(1.8～4.0) Dr, and the conical surface and vertical direction angle α=24 °～65 °.
Referring to accompanying drawing 16～accompanying drawing 18, water conservancy diversion inner member 2 is the cone rib, is arranged to 2 rows from top to bottom along inversed taper platform 1 inner surface of hollow, is respectively cone rib 2-2 and cone rib 2-1.
Cone rib 2-2 and cone rib 2-1 are closed circular, and the cross section is the triangle of hollow; Cone rib 2-2 and to bore rib 2-1 upper surface identical with the inversed taper platform 1 inner surface angle of hollow, angle be β=15 °～(90 °-α), lower surface is identical with the inversed taper platform 1 inner surface angle of hollow, is γ=α; The height method to set up of cone rib 2-2 and cone rib 2-1 is identical, is h0=(0.1～1) hsin α, and h represents that the inversed taper platform 1 inner surface intersecting lens of boring rib 2-2 or boring rib 2-1 upper surface and hollow is apart from the vertical range of inversed taper platform 1 lower surface of hollow; The lower surface of cone rib 2-2 and vertical range h1=(0.1～0.5) Dr of the inversed taper platform 1 inner surface intersecting lens of the upper surface of boring rib 2-1 and hollow.
Referring to accompanying drawing 19～accompanying drawing 21, distribution grid 3 is surface plate, in distribution grid 3 floor projection diameter De＜0.6 Dd zone based on the percent opening K1=15% in riser 6 cross sections～20%, in distribution grid 3 floor projection diameter De=0.6Dd～Dd zone based on the percent opening K2=30% in riser 6 cross sections～55%, distribution grid 3 is based on total percent opening K=(K1+K2)=45%～80% of riser 6 sectional areas, and K2/K1=1.3～3.0, Dd represents the floor projection diameter of distribution grid 3.
It should be noted that at last: above embodiment is only in order to illustrate the utility model and the described technical scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can modify or be equal to replacement the utility model; And all do not break away from technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the middle of claim scope of the present utility model.
Claims (8)
1. the distributor of a tandem compound fluid bed leg outlet, at least comprise: the inversed taper platform of hollow, water conservancy diversion inner member, distribution grid, it is characterized in that: the inversed taper platform upper surface of hollow and lower surface are open ports, the water conservancy diversion inner member is connected to the inversed taper platform inner surface of hollow, distribution grid is connected with the inversed taper platform upper surface sealing of hollow, and on distribution grid, zones of different is provided with the tap hole of the different gas of percent opening and particle.
2. the distributor of a kind of tandem compound fluid bed leg outlet according to claim 1, it is characterized in that: the inversed taper platform of described hollow be the frustum of a cone or lower surface for the circle upper surface be polygonal polygonal pyramid platform, the scope of many ribs is 3～8, comprises 8 ribs; Inversed taper platform lower surface diameter Dr equals connected riser diameter, height H=(1.5～4.5) Dr, and the inversed taper platform conical surface of hollow and vertical direction angle α=20 °～70 °.
3. the distributor of a kind of tandem compound fluid bed leg outlet according to claim 1, it is characterized in that: described water conservancy diversion inner member is cone rib or deflector, be arranged to 1～5 row from top to bottom along the inversed taper platform inner surface of hollow, be arranged to 2 rows or 2 rows when above, vertical range h1=(0～1.2) Dr between adjacent two row's inner member closest approaches; Same row's water conservancy diversion inner member is closed circular setting or subsection setup along the circumferential sustained height of inversed taper platform inner surface of hollow, and during subsection setup, same row's segments is 2～10, and each is intersegmental apart from L=(0.002～0.5) Dr.
4. the distributor of according to claim 1 or 3 described a kind of tandem compound fluid bed leg outlets, it is characterized in that: when described water conservancy diversion inner member is taked to bore rib, cone rib cross section is triangle, be solid or hollow structure, the inversed taper platform inner surface angle β of cone rib upper surface and hollow=5 °～(90 °-α), the inversed taper platform inner surface angle γ of cone rib lower surface and hollow=5 °～α, the inversed taper platform inner surface intersecting lens that the cone high h0=of rib (0.1～1) hsin α, h represent to bore rib upper surface and hollow is apart from the vertical range of the inversed taper platform lower surface of hollow.
5. the distributor of according to claim 1 or 3 described a kind of tandem compound fluid bed leg outlets, it is characterized in that: when described water conservancy diversion inner member is taked deflector, deflector is level or oblique lower setting, surface and 3=5 ° of the inversed taper platform inner surface angle of hollow～(90 °-α), the end that deflector is not connected with the inversed taper platform of hollow is apart from distance h 0=(0.1～1) the hsin α of the inversed taper platform inner surface of hollow, and the inversed taper platform inner surface intersecting lens that h represents deflector and hollow is apart from the vertical range of the inversed taper platform lower surface of hollow.
6. the distributor of a kind of tandem compound fluid bed leg outlet according to claim 1, it is characterized in that: described distribution grid is surface plate, epirelief cambered plate or recessed cambered plate, intrados height H 1=(0～1.2) Dr of epirelief cambered plate or recessed cambered plate; In distribution grid floor projection diameter De＜(0.5～0.8) Dd zone based on the percent opening K1=5% in riser cross section～45%, in distribution grid floor projection diameter De=(0.5～0.8) Dd～Dd zone based on the percent opening K2=10% in riser cross section～55%, distribution grid is based on total percent opening K=(K1+K2)=20%～80% of riser sectional area, and K2/K1=1.1～3.5, Dd represents the floor projection diameter of distribution grid.
7. the distributor of a kind of tandem compound fluid bed leg outlet according to claim 1, it is characterized in that: described distribution grid perforate direction be vertical, oblique in or oblique outside, the hole be shaped as circle, triangle, rectangle or strip, the center line in hole and vertical direction angle α 1=-1.1 α～+ 1.1 α, the angle that "-" expression vertically is rotated counterclockwise, the angle that "+" expression vertically turns clockwise, α is the inversed taper platform conical surface of hollow and the angle of vertical direction.
8. the distributor of a kind of tandem compound fluid bed leg outlet according to claim 1, it is characterized in that: on described distribution grid, each hole takes that equilateral triangle is arranged, square is arranged, regular polygon is arranged or along the concentric circles arranged, the limit number of regular polygon is 5～8, comprises 8; Perforate equivalent diameter d0=5mm～30mm, hole center distance S=(2～5) d0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220543000 CN202933693U (en) | 2012-10-23 | 2012-10-23 | Distributor at outlet of lift pipe of series combined fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220543000 CN202933693U (en) | 2012-10-23 | 2012-10-23 | Distributor at outlet of lift pipe of series combined fluidized bed |
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| Publication Number | Publication Date |
|---|---|
| CN202933693U true CN202933693U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220543000 Expired - Fee Related CN202933693U (en) | 2012-10-23 | 2012-10-23 | Distributor at outlet of lift pipe of series combined fluidized bed |
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| CN (1) | CN202933693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279915A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Solid particle ejecting distributor and online decoking device |
-
2012
- 2012-10-23 CN CN 201220543000 patent/CN202933693U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279915A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Solid particle ejecting distributor and online decoking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20151023 |
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| EXPY | Termination of patent right or utility model |