The present application discloses an ultralow-temperature earth-covered tank and a preparation process therefor. An inner tank cylinder body is divided into several section tank bodies. Adjacent section tank bodies are connected by means of a section connecting apparatus. A moving member arranged on each section tank body and a moving rail of the section connecting apparatus cooperate so that the section tank body may move relative to the section connecting apparatus. A first magnetic layer and a second magnetic layer are arranged on the outermost layer of the inner tank cylinder body and the innermost layer of an outer tank cylinder body, and magnetic properties thereof are the same. An interlayer space between the first magnetic layer and the second magnetic layer is filled with a cold-insulating material. Upon a certain part of the outer tank cylinder body being deformed under a pressure exceeding a pressure bearing limit, the second magnetic layer at a corresponding position approaches the first magnetic layer, and a corresponding certain section tank body is pushed to move away from the approaching outer tank cylinder body, improving the safety performance of the earth-covered ultralow-temperature tank.
Disclosed in the present application is an anti-corrosion coating process for a soil covering tank, belonging to the technical field of soil covering tank coating processing. The anti-corrosion coating process for the soil covering tank comprises the following steps: (1) carrying out sandblasting and rust removal on the surface of the soil covering tank, so that the roughness Ra is 75-100 μm and the cleanliness Sa is grade 2.5-3.0, then applying primer at a welding seam, and smoothing by means of sandpaper; (2) spraying the primer on the surface of the soil covering tank by adopting a high-pressure airless spraying method, and curing at 50-65 °C for 1-3 h; (3) spraying an intermediate coat on the surface of the primer by adopting the high-pressure airless spraying method, curing at 35-45 °C for 0.8-1.5 h, then polishing the surface of the intermediate coat by means of the sandpaper, and removing polishing ash; and (4) spraying a topcoat on the surface of the intermediate coat by adopting the high-pressure airless spraying method, and curing at 25-30 °C for 20-30 h to obtain the coated soil covering tank. The coating film prepared by the coating process has good flexibility, a strong adhesive force with the soil covering tank, and excellent corrosion resistance and weather resistance, thus providing durable protection for the soil covering tank.
B05D 7/00 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
B05D 3/12 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
A propane dehydrogenation process, where a system used in the process is a propane dehydrogenation system. The process comprises: heating a raw material, then inserting the raw material into a reactor and performing a reaction to obtain a reaction product, and inserting the reaction product into a subsequent treatment system; and during said heating process, first carrying out heat exchange using waste heat of a reaction product with the raw material in a coil-wound heat exchanger, then further performing heating via a heating furnace, and then inserting same into the reactor to perform the reaction. In the process, the reaction raw material is heated by utilizing waste heat of a reaction product, which effectively recovers and utilizes the waste heat of the reaction product, also effectively mitigates the problem of energy consumption in heating the reaction raw material, and mitigates the problem of a large cooling load of the reaction product; by means of the present system, reaction speed is increased, yield is improved, and propane dehydrogenation costs are effectively reduced.
F28D 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
An integral side slope structure of a soil-covered tank, includes a tank body, connecting pieces, and reinforcing frameworks. The exterior of the tank body is completely covered with soil, and a side slope is formed after the tank body is covered with the soil; each connecting piece is composed of ribs which are in cross connection to each other; the connecting pieces are connected to the outer wall of the tank body and are laid inside the side slope in the horizontal direction; a single-layer connecting net is formed after a single layer of the connecting pieces is connected to the tank body; a plurality of layers of the connecting pieces are arranged at intervals in the vertical direction; the tank body and the side slope are connected by the multi-layer connecting net to form an integral structure; the reinforcing frameworks are arranged along the side slope.
A soil completely-covered structure includes a base layer, slope body filling soil and a buffering layer; the base layer is arranged around a vertical tank body and is made of a base material located on a ground floor, and a first filling gap is formed between the base layer and an outer wall of the vertical tank body; the slope body filling soil is arranged on the base layer, a second filling gap is formed between the side of the slope body filling soil and the outer wall of the vertical tank body, and a side slope surface is formed on the outer side of the slope body filling soil; and the buffering layer is formed in the first filling gap and the second filling gap, and the buffering material fills the first filling gap and the second filling gap to wrap the surface of the vertical tank body.
The present disclosure relates to a field of soil-covered tank and includes a gas collecting and exhausting unit, a safety sealing unit and a closed-loop ventilation unit; a gas collecting pipe is located in a valve chamber and a channel, and the gas collecting pipe, a fan and an exhaust pipe are connected in sequence; a gas monitor of the safety sealing unit is used for monitoring concentration of combustible gases, a controller is connected to the gas monitor, a temperature sensor, a valve and a fan by conducting wires, and the controller set a warning temperature value and a warning gases concentration value and is capable of controlling actions of the valve and the fan; and the closed-loop ventilation unit is formed among a plurality of gas collecting and exhausting units.
The present disclosure relates to a soil completely-covered tank system with a built-in valve chamber. The valve chamber includes a spherical tank body, a valve chamber, and a channel; an exterior of the spherical tank body is completely covered with soil, and the spherical tank body is supported by a stand column and is arranged on the ground, such that a gap is formed between the bottom of the spherical tank body and a ground foundation; the valve chamber is arranged between the spherical tank body and the ground foundation; a top opening of the valve chamber is connected to the bottom of the spherical tank body by means of a first connecting structure.
The present application discloses a drainage system for planting in soil covering the top of a hazardous chemical storage tank, comprising a water-permeable layer, a barrier layer, a first barrier portion, a second barrier portion, and a waterproof thermal insulation layer. The water-permeable layer is disposed at the top layer of the drainage system; the barrier layer is disposed at the bottom of the water-permeable layer, and is provided with a drain pipe; the first barrier portion is disposed at the barrier layer, and the first barrier portion is disposed surrounding the water-permeable layer; the second barrier portion is disposed at the barrier layer, and the first barrier portion, the barrier layer, and the second barrier portion form a water-permeable channel disposed surrounding the water-permeable layer; the waterproof thermal insulation layer is disposed at the bottom of the barrier layer; the barrier layer, the waterproof thermal insulation layer, and the water-permeable channel extend all the way to the second barrier portion, and the bottom of the second barrier portion forms a drainage space, which can ensure that rainwater directly falling into the water-permeable channel directly enters the drainage space of the second barrier portion along the water-permeable channel and is then discharged into a downspout, preventing rainwater from eroding a connecting end of the waterproof layer for a long time, which causes exposure damage. The present application can achieve waterproof and thermal insulation effects for a hazardous chemical storage tank.
A fully soil-covered structure of a vertical tank body, arranged outside the vertical tank body, and comprising: a base layer (1), slope filling soil (2), and a cushion layer (3). The base layer (1) is arranged around the vertical tank body (5) and consists of a base layer material located on a terrace surface, and a first filling gap (6) is formed between the base layer (1) and the outer wall of the vertical tank body (5); the slope filling soil (2) is arranged on the upper portion of the base layer (1), a second filling gap (7) is formed between one side of the slope filling soil (2) close to the vertical tank body (5) and the outer wall of the vertical tank body (5), and a slope surface (201) is formed on the outer side of the slope filling soil (2); the cushion layer (3) is formed in the first filling gap (6) and the second filling gap (7), and the first filling gap (6) and the second filling gap (7) are filled with a cushion material to wrap the surface of the vertical tank body (5). The fully soil-covered structure of the vertical tank body enhances the integrity and stability of the whole soil-covered structure, and cushions the stress change between the tank body and the soil-covered structure.
The present invention relates to the field of mounded tanks. Gas collecting and exhausting units, safety closed units and a closed-loop ventilation unit are comprised, wherein gas collecting pipes are positioned in valve chambers and channels; the gas collecting pipes, fans and gas exhaust pipes are connected in sequence; gas monitors of the safety closed units are used for monitoring the concentration of a combustible gas; controllers are connected to the gas monitors, temperature sensors, valves and the fans by means of a wire; the controllers set a warning temperature and a warning gas concentration, and can control actions of the valves and the fans; and the closed-loop ventilation unit is formed among a plurality of gas collecting and exhausting units. According to the present invention, accumulation of a harmful and combustible gas inside the valve chambers and the channels can be prevented, the concentration of a hazardous gas can be monitored, and gas exchange processing can be automatically carried out; the temperature can also be monitored to avoid an explosion caused by an excessively high temperature; a harmful and combustible component in a gas can be adsorbed and filtered, so that the gas can be recycled, and can achieve a relatively high safety and environmental-protection standard; and the whole system can monitor and give an early warning of a dangerous situation.
A built-in valve chamber (2) of a tank completely covered with soil. The valve chamber comprises: a spherical tank (1), the valve chamber (2) and a channel (3), wherein an outer portion of the spherical tank (1) is completely covered with soil, and the spherical tank (1) is supported by a stand column (101) and arranged on the ground, such that a gap is formed between the bottom of the spherical tank (1) and a ground foundation; the valve chamber (2) is arranged between the spherical tank (1) and the ground foundation; a top opening of the valve chamber (2) is connected to the bottom of the spherical tank (1) by means of a first connecting structure (201), such that the valve chamber (2) supports the bottom of the spherical tank (1); and one end of the channel (3) is connected to a side opening of the valve chamber (2) by means of a second connecting structure (301), and the other end of the channel (3) extends outwards to be in communication with the outside of a soil layer.
Disclosed is an integral side slope structure of a soil covering tank, comprising a tank body, connecting pieces, and reinforcing frameworks. The exterior of the tank body is covered with soil, and a side slope is formed after the tank body is covered with soil; each connecting piece is composed of ribs which are connected to each other in a crisscross pattern; the connecting piece is connected to the outer wall of the tank body, and is laid inside the side slope in the horizontal direction; a single-layer connecting piece is connected to the tank body to form a single-layer connecting net; a plurality of connecting pieces are arranged at intervals in the vertical direction, so that a multi-layer connecting net connecting the tank body is formed in the side slope; the multi-layer connecting net connects the tank body to the side slope to form an integral structure; the reinforcing frameworks are arranged along the side slope; the side wall of each reinforcing framework is provided with an extension rod; the extension rod extends and is inserted into the side slope; a connecting piece close to the reinforcing framework is provided with a matching hole; the extension rod penetrates through the matching hole of the connecting piece, so that a crisscross structure is formed between the side slope and the connecting piece. In this way, the stability of the side slope is improved in a manner of forming an integral structure of the tank body, the connecting pieces, the reinforcing frameworks, and the covering soil.
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