Reservoir for aggressive liquids

专利摘要:
The invention relates to a tank construction for the storage and transportation of corrosive liquids, in particular for liquids that are corrosive to high-grade steel, such as silicon tetrachloride. The aim of the invention is to increase the life of the tank. All parts of the tank that are in contact during transportation, filling and unloading corrosive liquids are made of fluorinated hydrocarbons. 8 hp f-ly, 2 ill.
公开号:SU1572408A3
申请号:SU864028634
申请日:1986-12-12
公开日:1990-06-15
发明作者:Гункель Вернер；Йозеф ФРАНК
申请人:Мерк Патент Гмбх (Фирма)；
IPC主号:

专利说明:

The invention relates to a reservoir structure for storing and transporting corrosive liquids, in particular for liquids that are corrosive in high-grade steel, such as silicon tetrachloride.
The purpose of the invention is to increase the life of the tank,
Constructive implementation of elements. The proposed reservoir allows you to create conditions under which, during the operation of the reservoir, the interaction of corrosive liquid with the steel case of the reel is eliminated, which in turn ensures its long-term operation, as well as safety both during the transportation of corrosive liquid and during do not empty and fill it.
FIG. 1 shows a reservoir for aggressive liquids, a cut; FIG. 2 is a section A-A in FIG. 1,
The tank for aggressive liquids comprises a housing 1 made of steel with a flange 2 and an opening 3, a cover 4 with a flange 5 fixed by means of a bolted joint 6 on the flange 2 with an intermediate arrangement of the seal 7 of fluorinated hydrocarbon. The inner surface of the cover 4, the bottom and the walls of the housing 1 has a coating 8 in the form of a layer of fluorinated hydrocarbons. On the cover 4 a valve head 9 is installed, made in the form of a valve block 10 of fluorinated hydrocarbon. Valve block
10to the side surface and on its upper part is covered with a steel casing
11 with a flange 12 made of stainless steel. The lower end surface 13 of the valve block 10 is pressed against the upper surface of the cover 4
by sealing the flange 12 with screws 1-4 to the tank lid. For this purpose, the flange 1 2 is mounted on a steel case 11 with the formation of a gap between the cover and the bottom surface of the flange 12.
In the valve block 10 there are two vertical cylindrical channels 15 for the passage of corrosive liquid, which are coaxial with each of the holes 16 formed in the lid 4. A submerged tube 17 is screwed into one of the vertical cylindrical channels 15, the lower part of which is filled with agres
Q n
5 n
d
Q
five
five
In the upper part of each vertical cylindrical channel 15, a valve insert 18 is installed, having portions made of fluorinated hydrocarbon, and a valve block 19, which is movably mounted.
A movable valve shutter 19 of each valve insert 18 is positioned to seal a valve seat 20, which is formed by a cone-shaped undercut in each vertical cylindrical channel 15. Each valve insert 18 is pressed against the valve block 10 and held to ensure sealing by means of a clamping sleeve 21,
Valve block 10 and steel casing And can be made in the form of a cylinder.
In the valve block 10, cylindrical channels 22 may be provided in the horizontal plane to install a purge valve element 23 therein and purge channels 24 to communicate the cavity of the channel 22 with cavities of the vertical cylindrical channels 15.
In the side wall of the steel casing 11 and the valve block 10, horizontally stepped cylindrical channels 25 for supplying and discharging a purge protective gas through vertical cylindrical channels 15 are provided in the horizontal plane of the valve seats 20, each horizontal cylindrical channel 25 having a threaded portion 26 for the possibility of connecting the connecting element to provide a seal.
When the purge valve element 23 is opened, the horizontal stepped channels 25 for inlet and outlet communicate with each other through the purge channels 24 and the channel 22 and can be purged with protective gas.
All parts of the tank, including the valve block, which may come into contact with the aggressive fluid to be filled, for example silicon tetrachloride, are made of synthetic materials or coated with synthetic material, such as fluorinated hydrocarbons - polyvinylidene fluoride, which are insensitive to these aggressive liquids. m,
i Coating of internal walls and bottom
body and cover can also be made of polyvinylidene fluoride.
5 -f15
All valve inserts and the purge valve element are protected from aggressive liquids by means of bellows 27 and 28, which can be made of polytetrafluoroethylene,
Polytrifluorochloroethylene can also be used as a synthetic material for lining a tank or valve block.
The tank for corrosive liquids is operated in a known manner in compliance with safety regulations,
The solid lining of the tank and its lid with synthetic material with which the aggressive fluid does not enter into chemical interaction eliminates contact in this area between the aggressive fluid and the tank material, which can preferably be high-grade steel, so that favorable strength properties with relatively low weight are ensured. .



Since all openings and channels to be made in the valve head area are inside the valve block, which consists entirely of synthetic material that does not enter into chemical interaction with aggressive liquid, the possibility of harmful contact with structural elements is also excluded throughout the valve head from another material. Since the valve block itself, consisting of fluorinated hydrocarbons, does not have sufficient strength during long-term operation, because the synthetic material used is bent to yield, the valve block retains its strength, which is necessary to ensure the sealing function, with the help of steel surrounding the valve block. casing, which preferably also consists of high-grade steel. The tendency to material flow of the valve block is eliminated by the fact that the valve block is open on all sides and, thus, its shape cannot change even with prolonged mechanical load, even if the valve block is pressed against the lid with sufficient force to ensure a sufficient sealing effect. reservoir.
ten
2408
15
20
25
thirty
40
35
45
0
five
This is achieved in that the steel casing containing the valve block has a flange located at a distance from the reservoir cap, which is connected to the reservoir cap by means of flange screws.
In addition, it is envisaged that the holes in the valve block, in which the valve insert is installed, have a valve seat to which the valve plug of the valve insert fits. Thus, there is no need to provide a special valve seat, which should have been fixed and sealed in the valve block,
The valve block has a cylindrical shape and fits snugly into the cylindrical inner space of the steel casing, with the end surface of the valve block adjacent to the upper side of the tank cover. This form of valve block is preferred not only from a technological point of view, it also leads to the fact that the valve block does not experience almost any shape change from the pressure force applied when the valve block is pressed against the tank lid. The slight change in shape that occurs in the area of the end surface adjacent to the tank lid does not exert any pressure on the function of the valve inserts,

权利要求:
Claims (6)
[1]
Invention Formula
1, A tank for aggressive liquids, mainly for tetrachloride silicon, including a steel body with a hole and a lid having a valve head, characterized in that, in order to increase its service life, it is provided with a steel casing with a flange for placement in it, the valve head and the fastener to the lid are removable, and the coating in the form of a layer of fluorinated hydrocarbon located inside the tank on the bottom, walls and lid, the valve head is made in the form of a valve block of fluorinated hydrocarbon Yes, with vertical cylindrical channels for the passage of aggressive fluid, it is equipped with valve inserts with valve gates, each of which is installed
in cylindrical cylinder and has areas made of fluorinated hydrocarbon.
[2]
2, the tank according to claim. Characterized in that the flange is fixed on the steel casing with the formation of a gap between the lid and the bottom surface of the flange,
[3]
3, The reserve of claim 1, 1, O TL and H a - J (that is, and with the fact that each cylindrical channel is stepped to form a valve seat to accommodate the valve plug of the valve insert, 1
[4]
4, Tank pop, 1, O tl and h a - (about and with the fact that the valve block
[5]
The steel casing is made in the form of a cylinder, the valve block being of a different valve element and for communicating the cavity of the latter with cavities of vertical cylindrical channels of the valve block.
[6]
6. A reservoir according to claim 2, characterized in that in the side wall of the steel casing and the valve block from opposite sides in the area of valve seats in the horizontal plane there are stepped cylindrical channels for supplying and discharging the purge protective gas each through vertical cylindrical channels the cylindrical channel has a threaded section located on the steel casing.
7, Tank pop, 1, about tl and h
Beshchen in a steel jacket that forms a 2Q to U and with the fact that the valve block
there is a seal between the outer surface of the cover and the end surface of the valve block,
5. The tank on p; characterized by the fact that it is equipped with a purge valve element; cylindrical channels are made in the horizontal valve block in the horizontal plane
made of polyvinshshdenfluoride,
8, Tank pop, characterized in that the coating inside the walls and bottom of the case and cover
25 is made of polyvinylidene fluoride,
9, Tank pop, characterized in that the casing and steel casing are made of high quality steel.
for installation in one of them purge-l
/four
to u and so that the valve block
made of polyvinshshdenfluoride,
8, A reservoir of pop, characterized in that the coating of the inner walls and the bottom of the case and the cover
made of polyvinylidene fluoride,
9, Reservoir pop, characterized in that the casing and steel casing are made of high-grade steel.
FIG. 2

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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DE19853544260|DE3544260A1|1985-12-14|1985-12-14|CONTAINER FOR AGGRESSIVE LIQUIDS|

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