CN212039125U - Tank-in-tank liquid sulfur pool in vault tank - Google Patents
Tank-in-tank liquid sulfur pool in vault tank Download PDFInfo
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- CN212039125U CN212039125U CN202020413947.6U CN202020413947U CN212039125U CN 212039125 U CN212039125 U CN 212039125U CN 202020413947 U CN202020413947 U CN 202020413947U CN 212039125 U CN212039125 U CN 212039125U
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Abstract
The utility model belongs to the technical field of liquid sulfur storage, a liquid sulfur pond of jar form in the vault jar is related to. The liquid sulfur pool comprises an outer tank, an inner tank and a liquid sulfur degassing system, wherein the periphery of the inner tank is an inner tank wall for separating the two tanks, and the outer tank surrounds the periphery of the inner tank wall; the top parts of the outer tank and the inner tank are integral vault, and the wall of the inner tank is higher than that of the outer tank; the upper part of the inner tank wall is provided with a plurality of overflow ports, the bottom of the inner tank wall is fixedly connected with an overflow weir plate, the overflow weir plate is arranged on the outer wall of the inner tank wall in a surrounding manner, and the top of each overflow port is higher than the overflow weir plate; the inner tank is provided with a liquid sulfur input pipe, a liquid sulfur degassing pump suction pipe, a liquid sulfur degassing circulating pipe and an exhaust pipe, and the outer tank is provided with a liquid sulfur lift pump inlet pipe; the liquid sulfur degassing pump suction pipe and the liquid sulfur degassing circulating pipe are communicated with a liquid sulfur degassing system, and the liquid sulfur lifting pump inlet pipe and the air suction pipe are respectively communicated with a lifting pump and an air suction pump outside the storage tank. The degassing tank and the lifting tank in the form of the tank in the vault tank almost avoid all the defects of the traditional brick mixed liquid sulfur pool, and have wide application prospect.
Description
Technical Field
The utility model belongs to the technical field of liquid sulfur storage, a liquid sulfur pond of jar form in the vault jar is related to.
Background
The sulfur recovery device is an indispensable environmental protection device for oil refining and coal chemical industry devices, and the liquid sulfur pool is an indispensable important component of the sulfur recovery device. The liquid sulfur pond usually comprises two ponds, namely a liquid sulfur degassing pond and a liquid sulfur lifting pond, the size of the liquid sulfur pond is usually set according to the storage capacity of about 7 days of the production capacity, the degassing pond is relatively larger for ensuring the degassing effect so as to increase the retention time, and the size of the degassing pond is generally set according to about 4 days. In order to reduce the overall height of the sulfur recovery unit, reduce capital investment and facilitate liquid sulfur collection, the liquid sulfur ponds are typically located underground or semi-underground. The traditional liquid sulfur pool generally adopts a reinforced concrete, an anticorrosive coating isolation layer, a perlite plate heat insulation layer, an acid-resistant heat insulation brick and a high-temperature-resistant anticorrosive coating structure. The traditional liquid sulfur pool has the following disadvantages:
1) the structure and construction are complex, the construction period is long, the liquid sulfur pool is usually constructed at the earliest and handed over at the latest, and the labor cost is high, so that the budget is basically exceeded;
2) the liquid sulfur pool must be maintained after being used for a period of time, and the liquid sulfur pool with the traditional structure is difficult to maintain and has high maintenance cost;
3) during operation, the anti-corrosion coating often falls off to block or damage the pump, the frequency of maintaining the pump is greatly increased, and the production cost is increased;
4) in some places with low water level and poor water quality, the liquid sulfur pool corrodes from the outer side, and as the liquid sulfur pool does not basically perform external corrosion prevention, water is leaked from the outside of the pool into the liquid sulfur pool, so that the liquid sulfur pool is seriously corroded, and the device cannot normally operate;
5) the heat tracing of the liquid sulfur pool with a concrete structure is internal heat tracing, and the heat tracing pipe is in the liquid sulfur, so that the heat tracing pipe is often corroded and leaked, and the device can not be checked and maintained, thereby causing the shutdown of the device.
6) The liquid sulfur pool wall thickness of the traditional reinforced concrete + anticorrosive coating isolation layer + perlite board thermal insulation layer + acid-resistant insulating brick + high temperature-resistant anticorrosive coating structure is 600mm, and the effective space waste is serious.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the above-mentioned defect that current liquid sulphur pond facility exists, optimize liquid sulphur degasification and liquid sulphur and promote the holding reservoir, provided the liquid sulphur pond of jar form in the vault jar.
The utility model discloses an adopt following technical scheme to realize:
the utility model provides a liquid sulfur pool in a vault tank-in-tank form, which comprises an outer tank, an inner tank and a liquid sulfur degassing system, wherein the periphery of the inner tank is an inner tank wall for separating the two tanks, and the outer tank surrounds the periphery of the inner tank wall; the top parts of the outer tank and the inner tank are integral vault, and the wall of the inner tank is higher than that of the outer tank;
the upper part of the inner tank wall is provided with a plurality of overflow ports, the bottom of the inner tank wall is fixedly connected with an overflow weir plate, the overflow weir plate is arranged on the outer wall of the inner tank wall in a surrounding manner, and the bottoms of the overflow ports are higher than the overflow weir plate;
the inner tank is provided with a liquid sulfur input pipe, a liquid sulfur degassing pump suction pipe, a liquid sulfur degassing circulating pipe and an exhaust pipe, and the outer tank is provided with a liquid sulfur lifting pump inlet pipe and a pool pouring pipe; the liquid sulfur degassing pump suction pipe and the liquid sulfur degassing circulating pipe are communicated with the liquid sulfur degassing pump, and the liquid sulfur lifting pump inlet pipe and the air suction pipe are respectively communicated with the lifting pump and the air suction pump outside the storage tank.
Further, the inlet pipe of the liquid sulfur lifting pump and the inlet pipe of the liquid sulfur degassing pump are inserted into the bottom of the liquid sulfur pool.
Further, the outer tank is also provided with a pond reversing pipe, and the pond reversing pipe is communicated with an outlet circulating pipe of the liquid sulfur degassing pump.
Further, the top of the overflow port is arranged to the vault, and the bottom of the overflow port is flush with the top end of the wall of the outer tank.
Furthermore, an overflow weir plate is arranged on the outer wall of the inner tank below the overflow port, and liquid sulfur overflowing from the overflow port is distributed in a planar mode.
Furthermore, the outer side of the outer tank wall is provided with a heat-insulating layer, and the outer side of the outer tank and the outer side of the inner tank bottom are provided with heat-insulating layers.
Furthermore, the outer tank wall, the inner tank wall, the overflow weir plate, the outer tank bottom wall and the inner tank bottom wall are made of one or more than two of carbon steel, stainless steel-carbon steel composite plates or titanium plate-carbon steel composite plates.
The utility model discloses in, the combination of any kind of scheme or several kinds of schemes is flexible more than outer jar and the final selection of inner tank material, according to concrete engineering analysis to multiple factors such as material, construction, expense, time limit for a project are taken into account comprehensively.
The storage tank foundation is of a concrete structure, and a ring wall type or bearing platform type tank foundation is adopted according to geological conditions. Necessary anti-cracking structural steel bars and structural calculation stress steel bars are arranged, the influence of underground water on a liquid sulfur pool is considered, and whether the liquid sulfur pool is anti-floating, anti-seepage, anti-corrosion and the like is considered; the corrosiveness of the soil is considered, and whether the soil is antiseptic or not is considered.
The utility model has the advantages that:
(1) by adopting the design of the tank-in-tank, the outer tank can meet the process requirements only by increasing a small diameter on the basis of the inner tank; the two tanks share the foundation, so that the construction of the civil foundation is fast;
(2) the inner tank is operated in a full tank mode, the outer tank is equivalent to a heat-preservation tank of the inner tank, and the degassing tank does not need heat preservation. The outer tank can be used for heat preservation by adopting tank outer heat tracing;
(3) the steel vault tank is fast to construct and short in period; the steel vault can has thin wall, large effective space and small actual occupied area, is a normal-pressure steel vault, is convenient to inspect and maintain, and does not have impurities falling into liquid sulfur;
(4) the vault can has a structural form, a gas phase gathering space does not need to be independently arranged, and the gas phase is gathered to the vault through an overflow port; the liquid sulfur degassing tank and the lifting tank in the form of the tank in the vault tank almost avoid all the defects of the traditional brick-concrete liquid sulfur pool, and have wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a top plan view of a liquid sulfur pool in the form of a tank in a vault tank as provided in example 1;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
reference numbers in the figures: the system comprises an outer tank 1, an inner tank 2, an inner tank wall 301, an outer tank wall 302, a liquid sulfur input pipe 4, a liquid sulfur lifting pump inlet pipe 5, an air exhaust pipe 6, an overflow weir plate 7, an overflow port 8, a liquid sulfur degassing pump inlet pipe 9, a liquid sulfur degassing circulating pipe 10 and a tank pouring pipe 11.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings. The experimental procedures used in the following examples are all conventional procedures unless otherwise specified. The devices, materials, reagents and the like used in the following examples are commercially available unless otherwise specified. In the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inside", "outside", and the like are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The utility model discloses in, liquid sulphur degasification system, elevator pump, aspiration pump, delivery pump and automatic control system control pipeline valve are the means commonly used among the prior art.
As shown in fig. 1 and 2, the liquid sulfur pool in the form of a tank in a dome can of the present embodiment includes an outer tank 1 and an inner tank 2. The periphery of the inner tank is an inner tank wall 301 for separating the two tanks, and the outer tank surrounds the periphery of the inner tank wall; the top of the outer tank and the top of the inner tank are integral vault, the wall of the inner tank is higher than the wall 302 of the outer tank, and the wall of the inner tank extends to the vault to provide a certain supporting function for the vault.
Eight overflow ports 8 are arranged on the upper portion of the inner tank wall, the tops of the overflow ports are flush with the top end of the outer tank wall from the top to the vault, and the overflow ports are used as inner tank liquid sulfur overflow ports and inner and outer tank gas-phase communication ports. The bottom of the overflow port is fixedly connected with an overflow weir plate 7, and the overflow weir plate is arranged on the outer wall of the inner tank wall in a surrounding manner. The liquid sulfur in the inner tank falls into the outer tank after being distributed in a planar mode through the overflow weir plate, and flows into the outer tank in a membrane mode, so that an obvious degassing effect can be achieved.
The top of the inner tank is provided with a liquid sulfur input pipe 4, a liquid sulfur degassing pump suction inlet pipe 9, a liquid sulfur degassing circulating pipe 10 and an exhaust pipe 6, and the top of the outer tank is provided with a liquid sulfur lift pump inlet pipe 5. An inlet pipe of the liquid sulfur lift pump and an inlet pipe of the liquid sulfur degassing pump are inserted into the bottom of the liquid sulfur pool.
The liquid sulfur degassing pump suction pipe and the liquid sulfur degassing circulating pipe are communicated with the liquid sulfur degassing pump, and the liquid sulfur lifting pump inlet pipe and the air suction pipe are respectively communicated with the lifting pump and the air suction pump outside the storage tank. The inner tank is a liquid sulfur degassing tank, and the outer tank is a liquid sulfur lifting tank. And circularly spraying and degassing the liquid sulfur in the liquid sulfur degassing tank by a liquid sulfur degassing pump. The degassing tank is always operated in a full tank mode, and liquid sulfur overflows from an overflow port of the degassing tank onto an overflow weir plate and then flows into the lifting tank through the overflow weir plate. The gas phase of degassing tank and lift jar is gathered the tank deck through the overflow mouth, and the gas phase is taken away by the aspiration pump through the exhaust tube.
The outer tank is also provided with a pond reversing pipe 11 which is communicated with an outlet pipe of the liquid sulfur degassing pump. When the inner tank is shut down or cleaned, the liquid sulfur stored in the inner tank is pumped into the outer tank for storage.
The outer jar of jar wall outside sets up the heat preservation, and outer jar and inner tank bottom outside set up the heat preservation, and outer jar is the heat preservation jar of inner tank, and inner tank liquid sulphur does not solidify, and the heat preservation only needs outer jar of heat preservation, and the form of vault jar, gaseous phase assemble at the vault, need not improve degassing tank's height alone.
The wall and the vault of the outer tank are made of composite steel plates, and the materials are Q245R + 316L.
The inner tank wall and the overflow weir plate are made of 316L stainless steel plates.
The design adopts a unique concept, a common vault steel tank design is adopted for a liquid sulfur pool, the liquid sulfur degassing tank and the lifting tank adopt a tank-in-tank mode, an inner tank is a degassing tank, sulfur produced by the device is stored in the liquid sulfur degassing tank, and a degassing circulating pump is used for stirring and degassing; lifting the outer tank, conveying the degassed liquid sulfur to a liquid sulfur forming or liquid sulfur loading facility by using a lifting pump; the inner tank and the outer tank share the equipment foundation, and the outer tank can meet the process requirement of lifting the tank by increasing smaller diameter distance on the basis of the inner tank.
In the actual use process, the design is carried out by taking 20000 tons of liquid sulfur plants per year as a reference, and the annual operation hours is 8400 hours, namely 350 days. The storage capacity of the liquid sulfur pool is generally measured according to the maximum time of legal holidays, generally measured in 7 days, 400 tons of sulfur are produced in 7 days, and the degassing tank is measured in 4 days.
20000 ton/year's sulphur needs an outer jar diameter 10 meters, jar in the jar of inner tank diameter 7.5 meters, outer jar tangent line height 3 meters, the inner tank height is up to the vault, the inner tank provides certain support to the vault of vault jar simultaneously, the inner tank is 3 meters high overflow openings of going up, the wide overflow mouth opening of 500mm is to the vault, as liquid sulphur overflow mouth and gaseous phase intercommunication mouth, 2.8 meters high annular overflow weir plate of establishing outside at the inner tube carries out the face form degasification as the overflow plate to liquid sulphur. The thickness of the overflow weir plate is 3mm, the height of the weir plate is 3mm, and the width of the weir plate is 250 mm.
1) The diameter of the liquid sulfur degassing tank is 7.5 meters, the liquid level height in the degassing tank is 3 meters, and the liquid sulfur degassing tank is filled up.
The liquid sulfur reserve of the degassing tank is: 0.785 xd2X 3 × 1.8 ═ 238.44 tons, stored for about 4.17 days;
2) the liquid sulfur lifting tank is arranged on the outer side of the liquid sulfur degassing tank, the diameter of the liquid sulfur lifting tank is 10 meters, and the maximum liquid level of the liquid sulfur lifting tank is considered to be 2.5 meters due to the fact that the liquid sulfur lifting tank needs certain operation elasticity.
The reserve of the lifting tank:
0.785×(D2-d2)×2.5×1.8＝0.785×(102-7.52) X 2.5 × 1.8 ═ 154.55 tons, and stored for about 2.7 days.
The degassing tank and the lifting tank are stored for 2.7+4.17 days, 6.87 days and 7 days, which meet the production requirements.
In the above description, only the 20000 ton sulfur recovery apparatus is exemplified, and the diameters of the inner and outer tanks of the small-scale apparatus are reduced, and the diameters of the inner and outer tanks of the large-scale apparatus are enlarged, and the height of the tanks can be increased.
Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.
Claims (6)
1. The liquid sulfur pool in a vault tank-in-tank mode is characterized by comprising an outer tank (1), an inner tank (2) and a liquid sulfur degassing system, wherein the periphery of the inner tank (2) is an inner tank wall (301) for separating the two tanks, and the outer tank (1) surrounds the periphery of the inner tank wall (301); the tops of the outer tank (1) and the inner tank (2) are integral vault, and the inner tank wall (301) is higher than the outer tank wall (302);
the upper part of the inner tank wall (301) is provided with a plurality of overflow ports (8), the bottom of the inner tank wall is fixedly connected with an overflow weir plate (7), the overflow weir plate (7) is arranged on the outer wall of the inner tank wall (301) in a surrounding manner, and the bottom of each overflow port (8) is higher than the overflow weir plate (7);
the inner tank (2) is provided with a liquid sulfur input pipe (4), a liquid sulfur degassing pump suction inlet pipe (9), a liquid sulfur degassing circulating pipe (10) and an air exhaust pipe (6), and the outer tank (1) is provided with a liquid sulfur lift pump inlet pipe (5) and a pool reversing pipe (11); the liquid sulfur degassing pump suction inlet pipe (9) and the liquid sulfur degassing circulating pipe (10) are communicated with a liquid sulfur degassing pump, and the liquid sulfur lifting pump inlet pipe (5) and the air suction pipe (6) are respectively communicated with a lifting pump and an air suction pump outside the storage tank.
2. A pool of liquid sulphur in the form of a tank in a vault tank according to claim 1, characterized in that the liquid sulphur lift pump inlet pipe (5) and the liquid sulphur degasser pump inlet pipe (9) are inserted in the bottom of the pool.
3. A pool of liquid sulphur in the form of a tank in a vault tank according to claim 1, characterized in that the outer tank (1) is also provided with a pourer pipe (11), the pourer pipe (11) being in communication with the liquid sulphur degassing pump outlet pipe.
4. A pool of liquid sulphur in a tank form in a vault tank according to claim 1, wherein the overflow (8) is top to vault and bottom flush with the top end of the outer tank wall (302).
5. A pool of liquid sulphur in tank form in a vault tank according to claim 1, characterized in that the outer tank walls (302) are provided with insulation on the outside and the outer tank (1) and the inner tank (2) are provided with insulation on the outside at the bottom.
6. A pool of liquid sulphur in the form of a tank in a vault tank according to any of claims 1 to 5, characterized in that the material of the outer tank wall (302), the inner tank wall (301), the overflow weir plate (7), the bottom wall of the outer tank (1) and the bottom wall of the inner tank (2) is one or more of carbon steel, stainless steel-carbon steel composite plates or titanium plate-carbon steel composite plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020413947.6U CN212039125U (en) | 2020-03-27 | 2020-03-27 | Tank-in-tank liquid sulfur pool in vault tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020413947.6U CN212039125U (en) | 2020-03-27 | 2020-03-27 | Tank-in-tank liquid sulfur pool in vault tank |
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| Publication Number | Publication Date |
|---|---|
| CN212039125U true CN212039125U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020413947.6U Active CN212039125U (en) | 2020-03-27 | 2020-03-27 | Tank-in-tank liquid sulfur pool in vault tank |
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| CN (1) | CN212039125U (en) |
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- 2020-03-27 CN CN202020413947.6U patent/CN212039125U/en active Active
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| CP01 | Change in the name or title of a patent holder |
Address after: 255434 No. 22, middle refinery Road, Linzi District, Shandong, Zibo Patentee after: Shandong Sanwei Chemical Group Co.,Ltd. Address before: 255434 No. 22, middle refinery Road, Linzi District, Shandong, Zibo Patentee before: SHANDONG SUNWAY PETROCHEMICAL ENGINEERING Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |