CN203477412U - Coking-preventive back-pressure valve - Google Patents
Coking-preventive back-pressure valve Download PDFInfo
- Publication number
- CN203477412U CN203477412U CN201320537836.6U CN201320537836U CN203477412U CN 203477412 U CN203477412 U CN 203477412U CN 201320537836 U CN201320537836 U CN 201320537836U CN 203477412 U CN203477412 U CN 203477412U
- Authority
- CN
- China
- Prior art keywords
- valve
- coking
- pressure valve
- valve rod
- spheroid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004939 coking Methods 0.000 claims abstract description 29
- 238000007664 blowing Methods 0.000 claims abstract description 14
- 238000005260 corrosion Methods 0.000 claims abstract description 5
- 230000007797 corrosion Effects 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims abstract description 3
- 239000000945 filler Substances 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 230000008021 deposition Effects 0.000 abstract description 5
- 238000009991 scouring Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 239000000571 coke Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 208000012661 Dyskinesia Diseases 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010000 carbonizing Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005235 decoking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000002010 green coke Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a coking-preventive back-pressure valve. The coking-preventive back-pressure valve is characterized in that a main valve body and an auxiliary valve body are connected with each other to form a valve cavity, a ball is arranged in the cavity, an upper valve stem and a lower valve stem are respectively arranged on the upper side and the lower side of the ball and are connected with the ball by flat keys, and two steam blowing devices are respectively arranged on the left side and the right side of the valve cavity, the upper valve stem and the lower valve stem are respectively provided with other steam blowing devices which are communicated with packing, and the steam blowing devices blow steam to clean the inside of the valve. The coking-preventive back-pressure valve has the advantages that the coking-preventive back-pressure valve is simple in structure, low in opening torque and reliable in performance, is low in flow resistance when fully opened, and is scouring-resistant and corrosion-resistant; coking and deposition of residual oil can be prevented, accordingly, the problem that an existing valve cannot be opened due to the fact that all moving parts in the existing valve are adhered by residual oil can be effectively solved, and the coking-preventive back-pressure valve is safe and reliable in performance and long in service life.
Description
Technical field
The utility model relates to a kind of high temperature back pressure valve, particularly a kind of anti-coking back pressure valve.
Background technique
In petroleum refining industry, along with the development of crude oil deep process technology, oil refinery employing delayed coking unit is that raw material carries out thermal cracking and the condensation reaction of the degree of depth, process gas, gasoline, diesel oil, wax oil and coke at high temperature (approximately 510 ℃) by the heavy oil of poor hydrogen mostly.Existing delayed coking unit is all generally a stove (oven) two towers (coking tower) or two stove four towers, oven continuous feed, coking tower alternate operation.An online green coke of tower, another tower cooler, decoking and warm tower.Coke drum is before the new charging of switching, must carry out oil gas preheating, its main purpose is to make tower body pre-heating temperature elevation gradually, prevents that tower body from producing softer coke because the temperature difference is too large, minimizing fatigue life makes deformation of the body of coke drum and prevent due to huge tower body heat absorption, reduce initial reaction temperature.The preheating of coke drum need to be opened overhead oil gas barrier valve and be drawn high-temperature oil gas and enter coke drum, preheating speed's backrest pressure valve of coke drum regulates, because back pressure valve can be set up a Pressure Drop by this valve time, so just can increase the gas phase flow rate that returns and pass through new coking tower, thereby shorten the coking tower needed time of preheating.
Back pressure valve is arranged on coke drum tower top In Oil-gas Line, and medium temperature is high, contain tar, tar viscosity is large, the problem that existing back pressure valve exists:
While 1, using gate valve, by flashboard, open the Pressure Drop when diverse location is set up by this valve, the oil gas on coke drum tower top In Oil-gas Line can return to and pass through new coking tower, and STRENGTH ON COKE tower carries out preheating, and the preheat time of coke drum is relevant with the aperture of flashboard; But there is the depression runner of irregularity in gate valve itself, large the mobile of tar gas that affect of flow resistance during valve wide open; Easily coking on the depression runner of irregularity simultaneously, the activity matching gap of valve rod also can exist the carbonizing matter and the residual carbon that are constantly accumulated to make mutually to solidify between part, causes dyskinesia, even cannot move, and makes valve total failure.
While 2, using stop valve, by flap, open the Pressure Drop when diverse location is set up by this valve, the oil gas on coke drum tower top In Oil-gas Line can return to and pass through new coking tower, and STRENGTH ON COKE tower carries out preheating, and the preheat time of coke drum is relevant with the aperture of flap; Stop valve runner is S-type, and flow channel shape is complicated, and flow resistance is large, affects flowing of tar gas; The activity matching gap of valve rod also can exist the carbonizing matter and the residual carbon that are constantly accumulated to make mutually to solidify between part, causes dyskinesia, even cannot move, and makes valve total failure.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, and flow resistance is little, is conducive to the circulation of tar gas, and can stop the anti-coking back pressure valve of residual oil coking and deposition.
In order to solve above technical problem, the utility model provides a kind of anti-coking back pressure valve, comprise main valve body, auxiliary valve body, spheroid, valve rod, flat key, filler, gasket seal, steam blowing equipment and Electric actuator, main valve body and auxiliary valve body are connected to form valve body body cavity, spheroid is housed in body cavity, upper valve rod and lower valve rod are respectively equipped with in the both sides up and down of spheroid, spheroid and upper valve rod, lower valve rod connects with flat key, valve body body cavity each side have a steam blowing equipment, simultaneously at upper valve rod, lower valve rod is respectively provided with the steam blowing equipment being connected with filler, valve internal is purged, can stop residual oil coking and deposition, effectively solve the problem that in valve, all movement parts are caused valve to open by residual oil bonding
Described spherome surface and internal channel adopt spraying corrosion and wear resistant alloy, effectively solve washing away and etching problem of spheroid.
Described main valve body and auxiliary valve body junction surface are provided with gasket seal.
The gap of described valve rod is by packing seal.
The upper valve rod of anti-coking back pressure valve, lower valve rod are connected with Electric actuator, by Electric actuator actuate valve stem, open spheroid, the different opening of spheroid regulates by Electric actuator, thereby realize Pressure Drop when setting up by this valve, reach and increase the gas phase flow rate that returns to and pass through new coking tower, coking tower is effectively regulated preheat time.
The beneficial effects of the utility model:
1, adopt stationary structure to open moment of torsion little;
2, runner adopts full-bore design, and negotiability is strong, the little circulation that is conducive to tar gas of flow resistance;
3, spherome surface and internal channel adopt spraying corrosion and wear resistant alloy, effectively solve washing away and etching problem of spheroid;
4, adopt steam blowing equipment to purge and can stop residual oil coking and deposition valve internal, effectively solve the problem that in valve, all movement parts are caused valve to open by residual oil bonding.
Accompanying drawing explanation
Fig. 1 is internal structure schematic diagram of the present utility model;
Fig. 2 is the side view of Fig. 1;
Number in the figure explanation
1-main valve body; 2-spheroid;
31-valve rod; 32-lower valve rod;
4-flat key; 5-filler;
6-Electric actuator; 7-gasket seal;
8-auxiliary valve body; 9-purge vapor device
101-valve handle activity gap; 102-body cavity;
103-spherome surface; 104-spheroid internal channel.
Embodiment
Refer to shown in accompanying drawing, the utility model will be further described:
As Figure 1-Figure 2, the utility model provides a kind of anti-coking back pressure valve, comprises main valve body 1, auxiliary valve body 8, spheroid 2, upper valve rod 31, lower valve rod 32, flat key 4, filler 5, gasket seal 7, steam blowing equipment 9 and Electric actuator 6.Main valve body 1 and auxiliary valve body 8 junction surfaces are by gasket seal 7 sealings, after being connected with auxiliary valve body 8, main valve body 1 forms valve body body cavity 102, spheroid 2 is housed in body cavity 102, upper valve rod 31 and lower valve rod 32 are equipped with in the both sides up and down of spheroid 2, spheroid 2 and upper valve rod 31, lower valve rod 32 use flat keys 4 connect, the sealing of upper valve rod 31 and lower valve rod 32 is by filler 5 sealings, on main valve body 1, be provided with four steam blowing equipments 9 respectively: body cavity each side have a steam blowing equipment 9, at upper lower valve rod 3, be respectively provided with the steam blowing equipment 9 being connected with filler 5 simultaneously, adopt steam blowing equipment to purge and can stop residual oil coking and deposition valve internal, effectively solve the problem that in valve, all movement parts are caused valve to open by residual oil bonding, spherome surface 103 and internal channel 104 adopt spraying corrosion and wear resistant alloy, effectively solve washing away and etching problem of spheroid 2,
Anti-coking back pressure valve comes actuate valve stem 3 to open spheroid 2 by Electric actuator 6, the different opening of spheroid 2 regulates by Electric actuator 6, realize Pressure Drop when setting up by this valve, reach to increase and return to and pass through the gas phase flow rate of new coking tower, thereby coking tower is effectively regulated preheat time.
Claims (4)
1. an anti-coking back pressure valve, it is characterized in that: main valve body and auxiliary valve body are connected to form valve body body cavity, spheroid is housed in body cavity, upper valve rod and lower valve rod are respectively equipped with in the both sides up and down of spheroid, spheroid is connected with flat key with upper valve rod, lower valve rod, valve body body cavity each side have a steam blowing equipment, at upper valve rod, lower valve rod, be respectively provided with the steam blowing equipment being connected with filler simultaneously, valve internal is purged.
2. anti-coking back pressure valve according to claim 1, is characterized in that: described spherome surface and internal channel adopt spraying corrosion and wear resistant alloy.
3. anti-coking back pressure valve according to claim 1, is characterized in that: described main valve body and auxiliary valve body junction surface are provided with gasket seal.
4. anti-coking back pressure valve according to claim 1, is characterized in that: the gap of described valve rod is by packing seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320537836.6U CN203477412U (en) | 2013-09-02 | 2013-09-02 | Coking-preventive back-pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320537836.6U CN203477412U (en) | 2013-09-02 | 2013-09-02 | Coking-preventive back-pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477412U true CN203477412U (en) | 2014-03-12 |
Family
ID=50225743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320537836.6U Expired - Fee Related CN203477412U (en) | 2013-09-02 | 2013-09-02 | Coking-preventive back-pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916414A (en) * | 2018-09-11 | 2018-11-30 | 山东沃克控制阀有限公司 | A kind of ball valve that can clean spherome surface |
-
2013
- 2013-09-02 CN CN201320537836.6U patent/CN203477412U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916414A (en) * | 2018-09-11 | 2018-11-30 | 山东沃克控制阀有限公司 | A kind of ball valve that can clean spherome surface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202203431U (en) | Anti-coking ball valve | |
| CN201589000U (en) | Pneumatic lifting-revolving cock valve with functions of high temperature, high pressure and abrasion resistance | |
| CN103756692B (en) | Riser waste heat recovery device for coke oven | |
| CN102295943B (en) | Method for coking needle coke by large recycle ratio oil system | |
| CN104194826B (en) | A kind of processing method reducing delayed coking reaction dry gas yied | |
| CN204328022U (en) | Heat recovery rack-type electric brake plate valve | |
| WO2016192307A1 (en) | Novel heating furnace having multi-hearth structure, and design method and use thereof | |
| CN203477412U (en) | Coking-preventive back-pressure valve | |
| CN103215062A (en) | Delay coking processing method of inferior residual oil | |
| CN201269316Y (en) | Metal sealing plate sluice valve for ethylene cracking furnace | |
| CN208594843U (en) | Go up and down sealing device | |
| CN203176360U (en) | Novel dynamic seal structure for drill rod driving assembly | |
| CN104694139A (en) | Coke oven raw gas heat exchanger with flow guide device | |
| CN104595512A (en) | Water-cooled double-valve-plate high-temperature gate valve | |
| CN107956901A (en) | A kind of electric four passes plug valve | |
| CN104073268A (en) | Coking-preventing raw coke oven gas waste heat recycling device for heat-conduction oil coke oven | |
| CN201462048U (en) | Extrahigh pressure jacket thermal insulation ball valve for thermal insulation pipeline | |
| CN202868292U (en) | Throttling type drain valve | |
| CN201339009Y (en) | Totally sealed switching flue gas lower water-sealed valve for carbonization stove | |
| CN204509190U (en) | Equipment derived by a kind of new Type Coke Oven raw gas | |
| CN201723750U (en) | High-temperature valve for retort furnace | |
| CN208294492U (en) | Superhigh-pressure high-temp well head flap type | |
| CN101648188B (en) | Method for cleaning add-substract cock, exchange cock and branch pipe | |
| CN206488287U (en) | One kind connection A seating rises heat exchange of heat pipe | |
| CN205420275U (en) | Automatic water jet equipment of steam quenching in blue charcoal production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee after: SHK VALVE GROUP Co.,Ltd. Address before: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee before: SHK Valve Group Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170424 Address after: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 138 building 4 Patentee after: SHK VALVE GROUP CO.,LTD. Address before: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee before: SHK VALVE GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181011 Address after: 201416 199 North Village Road, Zhelin Town, Fengxian District, Shanghai Patentee after: SHK VALVE GROUP Co.,Ltd. Address before: 201416 4 4 North Village Road, Zhelin Town, Fengxian District, Shanghai Patentee before: SHK VALVE GROUP CO.,LTD. |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20190821 Granted publication date: 20140312 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220821 Granted publication date: 20140312 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20220821 Granted publication date: 20140312 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230902 Granted publication date: 20140312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 |