CA2551370C - Process for sulphur storage effected by means of blocks of sulphur - Google Patents
Process for sulphur storage effected by means of blocks of sulphur Download PDFInfo
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- CA2551370C CA2551370C CA2551370A CA2551370A CA2551370C CA 2551370 C CA2551370 C CA 2551370C CA 2551370 A CA2551370 A CA 2551370A CA 2551370 A CA2551370 A CA 2551370A CA 2551370 C CA2551370 C CA 2551370C
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- CA
- Canada
- Prior art keywords
- sulphur
- panels
- insulating material
- confinement
- heat insulating
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/0216—Solidification or cooling of liquid sulfur
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
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Abstract
Process for sulphur storage effected by means of sulphur blocks obtained using confinement panels of the space destined for the construction of said blocks, characterized in that said confinement panels substantially consist of, or contain, or are coated with heat insulating material, thus slowing down the solidification of the liquid sulphur on the walls of the block, improving the resistance of the surfaces of said blocks.
Description
PROCESS FOR SULPHUR STORAGE EFFECTED BY MEANS OF BLOCKS OF
SULPHUR
The present invention relates to a process for sulphur storage by means of blocks obtained using suitable panels.
The storage of sulphur, obtained in the liquid state from hydrocarbon fields through the Claus process, is cur-rently effected in solidified sulphur blocks having consid-erable dimensions (sides in the order of hundreds of me-ters). The blocks are obtained using metal panels, normally of aluminum, positioned along the perimeter of the surface destined for the construction of the blocks. Liquid sulphur is poured into the confined area, and is left to solidify in subsequent layers, until the upper edge of the metal panels is reached. The perimetric panels are removed, after solidification, and assembled at a greater height until the whole block is obtained. At the end of the construction all the block surfaces are exposed to atmospheric agents, in particular to erosive phenomena, which are particularly se-rious on the side walls of the blocks. The erosion of the walls, in addition to causing the sulphur to spread around the block, contributing to the environmental pollution of the site, can, in some cases, cause collapses, with further risks for the safety of the workers.
In the block construction process, the solidification of the outer walls takes place more rapidly than inside the block as the heat exchange with the external environment is more effective. Fast solidification causes the formation of a particularly fragile material, making the wall mechanically more unstable and increasing the effects of the erosive phenomena induced by atmospheric agents.
US Patent No. 4,513,550 relates to a method of building a reservoir for storing a liquid at low temperature such as liquified natural gas, comprising an inner tank having a top and bottom and an outer casing or vessel having inner and outer walls separated from the tank by a space of relatively small width filled with heat-insulating means forming a secondary barrier, characterized in that it comprises previously building the outer vessel and in mounting therein the inner tank, and then in building the heat-insulating means in the aforesaid space by performing successive operations comprising the steps of: arranging on the inner wall of the outer vessel a continuous lining forming a first fluid-tight barrier;
arranging bands or panels along the vertical walls of the inner tank without permanently securing said bands or panels, said bands or panels being made of material for forming a second fluidtight barrier, and jointing said bands or panels in a fluid tight manner formed of sub-blocks of complementary shapes contacting against one another so as to be slightly slidable on one another to compensate for the dimensional tolerances of said space between the inner tank and the outer vessel, associated with a second continuous, thin lining of cryogenic material forming a second fluid-tight barrier, the said structure being supported by the outer vessel and arranged simply around the inner tank, the building of the structure by stacking the blocks being performed either in horizontal slices or in vertical bands.
SULPHUR
The present invention relates to a process for sulphur storage by means of blocks obtained using suitable panels.
The storage of sulphur, obtained in the liquid state from hydrocarbon fields through the Claus process, is cur-rently effected in solidified sulphur blocks having consid-erable dimensions (sides in the order of hundreds of me-ters). The blocks are obtained using metal panels, normally of aluminum, positioned along the perimeter of the surface destined for the construction of the blocks. Liquid sulphur is poured into the confined area, and is left to solidify in subsequent layers, until the upper edge of the metal panels is reached. The perimetric panels are removed, after solidification, and assembled at a greater height until the whole block is obtained. At the end of the construction all the block surfaces are exposed to atmospheric agents, in particular to erosive phenomena, which are particularly se-rious on the side walls of the blocks. The erosion of the walls, in addition to causing the sulphur to spread around the block, contributing to the environmental pollution of the site, can, in some cases, cause collapses, with further risks for the safety of the workers.
In the block construction process, the solidification of the outer walls takes place more rapidly than inside the block as the heat exchange with the external environment is more effective. Fast solidification causes the formation of a particularly fragile material, making the wall mechanically more unstable and increasing the effects of the erosive phenomena induced by atmospheric agents.
US Patent No. 4,513,550 relates to a method of building a reservoir for storing a liquid at low temperature such as liquified natural gas, comprising an inner tank having a top and bottom and an outer casing or vessel having inner and outer walls separated from the tank by a space of relatively small width filled with heat-insulating means forming a secondary barrier, characterized in that it comprises previously building the outer vessel and in mounting therein the inner tank, and then in building the heat-insulating means in the aforesaid space by performing successive operations comprising the steps of: arranging on the inner wall of the outer vessel a continuous lining forming a first fluid-tight barrier;
arranging bands or panels along the vertical walls of the inner tank without permanently securing said bands or panels, said bands or panels being made of material for forming a second fluidtight barrier, and jointing said bands or panels in a fluid tight manner formed of sub-blocks of complementary shapes contacting against one another so as to be slightly slidable on one another to compensate for the dimensional tolerances of said space between the inner tank and the outer vessel, associated with a second continuous, thin lining of cryogenic material forming a second fluid-tight barrier, the said structure being supported by the outer vessel and arranged simply around the inner tank, the building of the structure by stacking the blocks being performed either in horizontal slices or in vertical bands.
2 US4190627 relates to a method of storing prilled sulphur in an open area comprising the steps of forming a dump of prilled sulphur of any size and shape, limiting said dump by immovable or movable blocking side walls, treating the surface of said dump to preclude liquid sulphur penetration into the interior thereof by covering said surface with a layer of crushed sulphur and then spraying said dump with liquid sulphur to form a protective layer of solidified sulphur thereon.
We have now found that by slowing down the heat exchange of the walls with the atmosphere, by interposing a layer of heat insulating material, the solidification of liquid sulphur on the walls of the block occurs more slowly and the solid formed has better mechanical properties and is more resistant to the stress produced by atmospheric agents.
The process for sulphur storage, object of the present invention, effected by means of sulphur blocks obtained by using confinement panels of the space destined for the construction of said blocks, is characterized in that said confinement panels are substantially made of, or contain, or are coated with a heat insulating material, thus slowing down the solidification of a liquid sulphur on the block walls.
A particularly preferred embodiment of the invention relates to a process for sulphur storage by means of sulphur blocks using confinement panels of the space for the construction of said blocks, characterized in that said confinement panels consist of, or contain, or are coated with a heat insulating material, thus slowing down the solidification of a liquid sulphur on the block walls; and in that of comprising steps:
= positioning the confinement panels and, in case that said confinement panels are coated with the heat insulating material, laying of a layer of the heat insulating material on an inner wall of said confinement panels;
= pouring of the liquid sulphur until a first layer of sulphur is filled;
and
We have now found that by slowing down the heat exchange of the walls with the atmosphere, by interposing a layer of heat insulating material, the solidification of liquid sulphur on the walls of the block occurs more slowly and the solid formed has better mechanical properties and is more resistant to the stress produced by atmospheric agents.
The process for sulphur storage, object of the present invention, effected by means of sulphur blocks obtained by using confinement panels of the space destined for the construction of said blocks, is characterized in that said confinement panels are substantially made of, or contain, or are coated with a heat insulating material, thus slowing down the solidification of a liquid sulphur on the block walls.
A particularly preferred embodiment of the invention relates to a process for sulphur storage by means of sulphur blocks using confinement panels of the space for the construction of said blocks, characterized in that said confinement panels consist of, or contain, or are coated with a heat insulating material, thus slowing down the solidification of a liquid sulphur on the block walls; and in that of comprising steps:
= positioning the confinement panels and, in case that said confinement panels are coated with the heat insulating material, laying of a layer of the heat insulating material on an inner wall of said confinement panels;
= pouring of the liquid sulphur until a first layer of sulphur is filled;
and
3 = optionally re-positioning of said panels or optionally positioning of further confinement panels analogous to the previous ones, for forming subsequent levels of the sulphur blocks and the corresponding introduction of the liquid sulphur until the entire block has been constructed.
Another embodiment of the invention relates to a process as defined hereinabove, wherein a consequent adhesion of the heat insulating material to the solidified sulphur takes place after pouring of the liquid sulphur.
Another embodiment of the invention relates to a process as defined hereinabove, wherein further laying of the heat insulating material takes place after re-positioning of the confinement panels in case that said confinement panels are coated with the heat insulating material.
When the confinement panel does not substantially consist of heat insulating material alone, it can be either metallic, for example aluminum, or non-metallic, preferably wood or polymeric material.
The heat insulating material is preferably selected from an expanded material, glass wool, rock wool or cork; more preferably the expanded material can be selected from expanded polystyrene and expanded polyurethane.
The heat insulating material can be in the form of sheets, preferably having a thickness of a few centimetres, more preferably from 1 to 5 cm, and a density preferably from 10 to 60 kg/m3.
The heat insulating material should also be selected on the basis of whether it must adhere or not to the solidified sulphur.
For easy laying, the sheets of heat insulating material can preferably have fitting edges so as to form a continuous layer.
More specifically, the process is effected according to whether the confinement panels substantially consist of, or contain, or are coated with heat insulating material, i.e. depending on whether the heat insulating material is present 3a in the panel before its positioning or is applied after the positioning of the same.
When the confinement panel is coated with heat insu-3b lating material, the process can include the following steps:
= positioning of the confinement panels and laying of a layer of heat insulating material on the inner wall of said metal or plastic panels;
= pouring of liquid sulphur until the first layer of sulphur is filled and the possible consequent adhe-sion of said heat insulating material to the solidi-fied sulphur;
= possible re-positioning of said panels for the pour-ing of further sulphur layers and the further laying of heat insulating material to form subsequent levels of the sulphur block and the corresponding introduc-tion of liquid sulphur and possible consequent adhe-sion of said heat insulating material to the solidi-fied sulphur until the entire block has been con-structed.
Should the confinement panel substantially consist of, or contain heat insulating material, i.e. is equipped with said insulating material before its positioning, the panel can be left for the further protection of the block or it can be re-positioned at the upper levels of the block.
In the case of a confinement panel substantially con-sisting of, or containing insulating material before its positioning and left for further protection of the block,
Another embodiment of the invention relates to a process as defined hereinabove, wherein a consequent adhesion of the heat insulating material to the solidified sulphur takes place after pouring of the liquid sulphur.
Another embodiment of the invention relates to a process as defined hereinabove, wherein further laying of the heat insulating material takes place after re-positioning of the confinement panels in case that said confinement panels are coated with the heat insulating material.
When the confinement panel does not substantially consist of heat insulating material alone, it can be either metallic, for example aluminum, or non-metallic, preferably wood or polymeric material.
The heat insulating material is preferably selected from an expanded material, glass wool, rock wool or cork; more preferably the expanded material can be selected from expanded polystyrene and expanded polyurethane.
The heat insulating material can be in the form of sheets, preferably having a thickness of a few centimetres, more preferably from 1 to 5 cm, and a density preferably from 10 to 60 kg/m3.
The heat insulating material should also be selected on the basis of whether it must adhere or not to the solidified sulphur.
For easy laying, the sheets of heat insulating material can preferably have fitting edges so as to form a continuous layer.
More specifically, the process is effected according to whether the confinement panels substantially consist of, or contain, or are coated with heat insulating material, i.e. depending on whether the heat insulating material is present 3a in the panel before its positioning or is applied after the positioning of the same.
When the confinement panel is coated with heat insu-3b lating material, the process can include the following steps:
= positioning of the confinement panels and laying of a layer of heat insulating material on the inner wall of said metal or plastic panels;
= pouring of liquid sulphur until the first layer of sulphur is filled and the possible consequent adhe-sion of said heat insulating material to the solidi-fied sulphur;
= possible re-positioning of said panels for the pour-ing of further sulphur layers and the further laying of heat insulating material to form subsequent levels of the sulphur block and the corresponding introduc-tion of liquid sulphur and possible consequent adhe-sion of said heat insulating material to the solidi-fied sulphur until the entire block has been con-structed.
Should the confinement panel substantially consist of, or contain heat insulating material, i.e. is equipped with said insulating material before its positioning, the panel can be left for the further protection of the block or it can be re-positioned at the upper levels of the block.
In the case of a confinement panel substantially con-sisting of, or containing insulating material before its positioning and left for further protection of the block,
- 4 -the steps are substantially the following:
= positioning of the confinement panels substantially consisting of, or already containing the heat insu-lating material on the inner wall of said panels;
= pouring of liquid sulphur until the first layer of sulphur is full and the possible consequent adhesion of said heat insulating material to the solidified sulphur;
= possible positioning of further confinement panels analogous to the previous ones for pouring further sulphur layers for forming subsequent levels of the sulphur block and the corresponding introduction of liquid sulphur until the entire block has been con-structed.
In the case of confinement panels, substantially con-sisting of or containing insulating material before its po-sitioning, re-positioned at the upper levels of the block, the steps are substantially the following:
= positioning of the confinement panels substantially consisting of, or already containing heat insulating material, on the inner wall of said panels;
= pouring of liquid sulphur until the first layer of sulphur is full;
= possible re-positioning of said panels for pouring further sulphur layers for forming subsequent levels
= positioning of the confinement panels substantially consisting of, or already containing the heat insu-lating material on the inner wall of said panels;
= pouring of liquid sulphur until the first layer of sulphur is full and the possible consequent adhesion of said heat insulating material to the solidified sulphur;
= possible positioning of further confinement panels analogous to the previous ones for pouring further sulphur layers for forming subsequent levels of the sulphur block and the corresponding introduction of liquid sulphur until the entire block has been con-structed.
In the case of confinement panels, substantially con-sisting of or containing insulating material before its po-sitioning, re-positioned at the upper levels of the block, the steps are substantially the following:
= positioning of the confinement panels substantially consisting of, or already containing heat insulating material, on the inner wall of said panels;
= pouring of liquid sulphur until the first layer of sulphur is full;
= possible re-positioning of said panels for pouring further sulphur layers for forming subsequent levels
- 5 -of the sulphur block, and the corresponding introduc-tion of liquid sulphur until the entire block has been constructed.
If the confinement panel is coated with heat insulat-ing material, or when the confinement panel substantially consists of, or contains heat insulating material and is left for further protection of the block, the layer of in-sulating material is preferably selected so as to strictly and firmly adhere to the solidified sulphur, so that the wall is even more stable from a mechanical point of view and is more efficaciously protected from environmental agents.
The solidification processes of sulphur in contact with the insulating material and the adhesion of the panel to the solidified sulphur do in fact cause an increase in the mechanic resistance of the wall and an efficient pro-tection against collapsing and erosive phenomena, substan-tially reducing the environmental impact of the deposit.
All the process described above can be optionally corn-pleted by the laying of insulating material also for im-proving the resistance of the upper surface of the block.
The improvement of the resistance of the upper surface can be obtained by solidifying the last layers of the block, keeping the confinement panels folded towards the inside of the block, positioned at an acute angle with respect to the
If the confinement panel is coated with heat insulat-ing material, or when the confinement panel substantially consists of, or contains heat insulating material and is left for further protection of the block, the layer of in-sulating material is preferably selected so as to strictly and firmly adhere to the solidified sulphur, so that the wall is even more stable from a mechanical point of view and is more efficaciously protected from environmental agents.
The solidification processes of sulphur in contact with the insulating material and the adhesion of the panel to the solidified sulphur do in fact cause an increase in the mechanic resistance of the wall and an efficient pro-tection against collapsing and erosive phenomena, substan-tially reducing the environmental impact of the deposit.
All the process described above can be optionally corn-pleted by the laying of insulating material also for im-proving the resistance of the upper surface of the block.
The improvement of the resistance of the upper surface can be obtained by solidifying the last layers of the block, keeping the confinement panels folded towards the inside of the block, positioned at an acute angle with respect to the
- 6 -horizontal plane. In this way, the upper surface of the block, which is tilted, will also solidify in contact with the insulating panels, thus acquiring the same advantages as the side walls. In order to avoid the sharp intersection of the block walls, the meeting lines of the side walls and those between the side walls and the upper wall, can be rounded for a higher solidity and strength of the entire block.
Some examples are now provided, which represent em-bodiments of the present invention and which should not be considered as limiting its scope.
Example 1 The inside of a cube having metal walls with a side of 50 cm. is covered with a layer of expanded polystyrene 2 cm thick and with a density of 50 Kg/m3. Liquid sulphur is poured into said cube thus prepared, in successive layers of 10 cm. Each layer of liquid sulphur is left to solidify and cool at room temperature before pouring the subsequent layer. Once the cube has been filled, the metal walls are removed and the sulphur cube is vertically sectioned so as to collect 5 cm-thick samples from the walls, for mechani-cal characterization.
Table 1 shows the mechanical characteristics of the cube wall samples prepared by insulating the walls and corn-paring them with those of an identical cube prepared with-
Some examples are now provided, which represent em-bodiments of the present invention and which should not be considered as limiting its scope.
Example 1 The inside of a cube having metal walls with a side of 50 cm. is covered with a layer of expanded polystyrene 2 cm thick and with a density of 50 Kg/m3. Liquid sulphur is poured into said cube thus prepared, in successive layers of 10 cm. Each layer of liquid sulphur is left to solidify and cool at room temperature before pouring the subsequent layer. Once the cube has been filled, the metal walls are removed and the sulphur cube is vertically sectioned so as to collect 5 cm-thick samples from the walls, for mechani-cal characterization.
Table 1 shows the mechanical characteristics of the cube wall samples prepared by insulating the walls and corn-paring them with those of an identical cube prepared with-
- 7 -out insulation.
Table 1. Mechanical characteristics Sample Flexural strength Density Porosity (13) Unit (MPa) (g/cm3) (%) without insulation 76.1+ 12.8 1.87 + 0.02 4.5 with insulation 222.9 + 35.1 1.90 + 0.06 3.2 Test samples of 5x5x20 cm, surfaces not rectified Porosity with respect to the monocline phase Example 2 The inside of the same cube of example 1 is covered with a layer of expanded polyurethane 2 cm thick and with a density of 35 Kg/m3.
The same procedures are adopted as in example 1.
Table 2 shows the mechanical characteristics of the cube wall samples prepared by insulating the walls and com-paring them with those of an identical cube prepared with-out insulation.
Table 2. Mechanical characteristics Sample Flexural strength Density Porosity (p) 2 0 Unit (MPa) (g/cm) (%) without insulation 76.1 12.8 1.87 + 0.02 4.5 with insulation 122.5 28.2 1.89 + 0.05 3.6 Test samples of 5x5x20 cm, surfaces not rectified Porosity with respect to the monocline phase Example 3 The inside of the same cube of example 1 is covered
Table 1. Mechanical characteristics Sample Flexural strength Density Porosity (13) Unit (MPa) (g/cm3) (%) without insulation 76.1+ 12.8 1.87 + 0.02 4.5 with insulation 222.9 + 35.1 1.90 + 0.06 3.2 Test samples of 5x5x20 cm, surfaces not rectified Porosity with respect to the monocline phase Example 2 The inside of the same cube of example 1 is covered with a layer of expanded polyurethane 2 cm thick and with a density of 35 Kg/m3.
The same procedures are adopted as in example 1.
Table 2 shows the mechanical characteristics of the cube wall samples prepared by insulating the walls and com-paring them with those of an identical cube prepared with-out insulation.
Table 2. Mechanical characteristics Sample Flexural strength Density Porosity (p) 2 0 Unit (MPa) (g/cm) (%) without insulation 76.1 12.8 1.87 + 0.02 4.5 with insulation 122.5 28.2 1.89 + 0.05 3.6 Test samples of 5x5x20 cm, surfaces not rectified Porosity with respect to the monocline phase Example 3 The inside of the same cube of example 1 is covered
- 8 -with a layer of rock wool, 2 cm thick and with a density of 150 Kg/m3.
The same procedures are adopted as in example 1.
Table 3 shows the mechanical characteristics of the cube wall samples prepared by insulating the walls and com-paring them with those of an identical cube prepared with-out insulation.
Table 3. Mechanical characteristics Sample Flexural strength Density Porosity (13) Unit (1\IPa) (g/cm) NO
without insulation 76.1 12.8 1.87 + 0.02 4.5 with insulation 140 + 62 1.88 + 0.06 4.1 Test samples of 5x5x20 cm, surfaces not rectified Porosity with respect to the monocline phase Example 4 The inside of the same cube of example 1 is covered with a layer of expanded polystyrene, 2 cm thick and with a density of 15 Kg/m3.
The same procedures are adopted as in example 1, but also adding the insulation of the upper wall.
Table 4 shows the mechanical characteristics of the cube wall samples prepared by insulating the walls and com-paring them with those of an identical cube prepared with-out insulation.
The same procedures are adopted as in example 1.
Table 3 shows the mechanical characteristics of the cube wall samples prepared by insulating the walls and com-paring them with those of an identical cube prepared with-out insulation.
Table 3. Mechanical characteristics Sample Flexural strength Density Porosity (13) Unit (1\IPa) (g/cm) NO
without insulation 76.1 12.8 1.87 + 0.02 4.5 with insulation 140 + 62 1.88 + 0.06 4.1 Test samples of 5x5x20 cm, surfaces not rectified Porosity with respect to the monocline phase Example 4 The inside of the same cube of example 1 is covered with a layer of expanded polystyrene, 2 cm thick and with a density of 15 Kg/m3.
The same procedures are adopted as in example 1, but also adding the insulation of the upper wall.
Table 4 shows the mechanical characteristics of the cube wall samples prepared by insulating the walls and com-paring them with those of an identical cube prepared with-out insulation.
- 9 -Table 4. Mechanical characteristics Sample Flexural strength Density Porosity (p) Unit (MPa) (g/cm) (%) without insulation 76.1+ 12.8 1.87 + 0.02 4.5 with insulation 180.4 22.3 1.91 + 0.03 2.5 Test samples of 5x5x20 cm, surfaces not rectified Porosity with respect to the monocline phase
- 10 -
Claims (8)
1. Process for sulphur storage by means of sulphur blocks using confinement panels of the space for the construction of said blocks, characterized in that said confinement panels consist of, or contain, or are coated with a heat insulating material, thus slowing down the solidification of a liquid sulphur on the block walls;
and in that of comprising steps:
.cndot. positioning the confinement panels and, in case that said confinement panels are coated with the heat insulating material, laying of a layer of the heat insulating material on an inner wall of said confinement panels;
.cndot. pouring of the liquid sulphur until a first layer of sulphur is filled; and .cndot. optionally re-positioning of said panels or optionally positioning of further confinement panels analogous to the previous ones, for forming subsequent levels of the sulphur blocks and the corresponding introduction of the liquid sulphur until the entire block has been constructed.
and in that of comprising steps:
.cndot. positioning the confinement panels and, in case that said confinement panels are coated with the heat insulating material, laying of a layer of the heat insulating material on an inner wall of said confinement panels;
.cndot. pouring of the liquid sulphur until a first layer of sulphur is filled; and .cndot. optionally re-positioning of said panels or optionally positioning of further confinement panels analogous to the previous ones, for forming subsequent levels of the sulphur blocks and the corresponding introduction of the liquid sulphur until the entire block has been constructed.
2. Process according to claim 1, wherein the confinement panel is made of metal or wood or polymeric material.
3. Process according to claim 1, wherein the heat insulating material is an expanded material, glass wool, rock wool or cork.
4. Process according to claim 3, wherein the expanded material is selected from the group consisting of expanded polystyrene and expanded polyurethane.
5. Process according to claim 1, wherein the insulating material is in the form of sheets having a thickness ranging from 1 to 5 cm and a density ranging from 10 to 60 Kg/m3.
6. Process according to claim 1, wherein a consequent adhesion of the heat insulating material to the solidified sulphur takes place after pouring of the liquid sulphur.
7. Process according to claim 1, wherein further laying of the heat insulating material takes place after re-positioning of the confinement panels in case that said confinement panels are coated with the heat insulating material.
8. Process according to claim 1, wherein when the sulphur block has an upper surface having an improved resistance, said process further comprises a step of solidifying the last layers of the sulphur block, keeping the confinement panels folded towards the inside of the sulphur block, positioned at an acute angle with respect to an horizontal plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2005A001293 | 2005-07-08 | ||
| ITMI20051293 ITMI20051293A1 (en) | 2005-07-08 | 2005-07-08 | PROCEDURE FOR DETACHMENT OF SULFUR DETACHED BY SULFUR BLOCKS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2551370A1 CA2551370A1 (en) | 2007-01-08 |
| CA2551370C true CA2551370C (en) | 2014-09-16 |
Family
ID=35708575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2551370A Expired - Fee Related CA2551370C (en) | 2005-07-08 | 2006-06-29 | Process for sulphur storage effected by means of blocks of sulphur |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2551370C (en) |
| IT (1) | ITMI20051293A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2711132A1 (en) * | 2008-08-27 | 2010-03-04 | Edward Mierzewski | Structurally reinforced sulfur blocks and processes of making |
| ITMI20110667A1 (en) | 2011-04-19 | 2012-10-20 | Claudio Paolo Cecchini | PROCEDURE FOR STORAGE AND HANDLING OF SULFUR IN BLOCKS |
| US12352002B2 (en) | 2023-05-25 | 2025-07-08 | Saudi Arabian Oil Company | Underground cuboid sulfur storage systems |
-
2005
- 2005-07-08 IT ITMI20051293 patent/ITMI20051293A1/en unknown
-
2006
- 2006-06-29 CA CA2551370A patent/CA2551370C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2551370A1 (en) | 2007-01-08 |
| ITMI20051293A1 (en) | 2007-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20220301 |
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| MKLA | Lapsed |
Effective date: 20200831 |