RU1820859C - Device for dissolution of salts - Google Patents

Abstract

SUMMARY OF THE INVENTION: the proposed device for dissolving salts is provided with additional reservoirs, trays connecting reservoirs that are installed at a lower level relative to each other, with each reservoir equipped with slurry pumps that are bundled according to the technological scheme. In order to improve the cleaning of the saline solution from mechanical impurities, hydrocyclones and sludge traps are installed in the inlet pipelines of the slurry pumps. The process is a cascade method of dissolving salts. Hydrodynamic salt erosion and hydrodynamic mixing of the solution with a cascade method of dissolving salts provides a continuous process, high productivity and improved quality of the solution. The new device makes it possible to use the principle of interchangeability of pumps when they are stopped for repair by switching the lines with existing valves. Due to interchangeability, the unproductive time is reduced upon failure of the elements of the device, maintainability is maintained and maintenance during operation is improved. When used in production, a positive technical and economic effect and high profit are achieved. 1 C.p. f-ls, 2 ill.

Description

The invention relates to the field of mining, in particular to the oil and gas industry, to devices for dissolving salts, and can be used in the new design of salt solution units and arrangement of fields in oil and gas fields.

The purpose of the invention is to increase productivity by ensuring the continuity of the process of dissolving the salt by hydrodynamic mixing of the solution.

In FIG. 1 shows a device for dissolving salts, general view (conventional image; the direction of movement of the solution is shown by arrows); figure 2 - device

for dissolving salts, a top view showing a flow diagram of piping pumps and tanks.

The device for dissolving salts contains centrifugal slurry pumps 1, 2, 3, 4, tanks 5, 6, 7, pipelines with valves 8, flanges 9 for draining the sludge into the drainage system, pipelines 10 with valves, pipelines 11 with valves, pipelines 12 mountains whose water, line 13 for the delivery of the finished saline solution, trays 14, 15, 16, hydrocyclones 17, 18. 19, sludge traps 20, 21.

The elements of the salt dissolving apparatus are connected as follows. Tanks 5, 6, 7 are connected in series

00

go about

00

eat ch

with

by means of pipelines 8 with large-sized valves. The device is equipped with trays 14.15.1 V connecting tanks 5, 6, 7, installed with decreasing level relative to each other.

Each tank 5, 6, 7 is equipped with a slurry pump 1,2,3,4 with inlet and outlet nozzles.

The pumps are interconnected by a pipeline 10 with valves to ensure the interchangeability of pumps 1,2,3 or to switch a pump to any of the tanks, and, if necessary, to combine the operation of the pumps with one or another

storage tank.

The inputs of the pumps 1, 2, 3 are connected by a pipe 1 1 with valves. The pipeline combines, if necessary, pumps or reservoirs to change the operating mode of the device.

Pipelines 12 connect the pump inlets to the hot water main. In the process flow diagram, the trunk is represented by pipe sections with valves with an arrow indicating the direction of movement of hot water.

The outputs of the pumps 1. 2, 3 are connected to the line 13 for dispensing the finished saline solution and pipe sections connected with hydrodynamic nozzles for salt erosion.

The trays 14, 15, 16 connect the tanks 5, 6, 7 and are installed with a lowering level relative to each other, like pipelines 8 and the tanks themselves.

In order to more thoroughly purify the saline solution from mechanical impurities, hydrocyclones 17, 18, 19 and ilovulite i20.21 were installed at the pump inlet pipelines.

The operation of the device for dissolving salts includes a number of technological processes and consists in the following,

Salt to produce saline is supplied from tray 14 to reservoir 5 (direction shown by arrows). Mixing of the salt and erosion are carried out hydrodynamically.

The hydrodynamic nozzles are connected to the outlet of the pump 1 and installed in a certain order on the tray 14 and the reservoir 5. When the brine 5 is filled with brine, the excess flows into the reservoir 6, in which hydrodynamic mixing and dissolution of salt crystals are continued using hydrodynamic nozzles connected to the pump 2 and hot water pipeline. For the delivery of the finished solution from the tank 5 or 6 of a certain density, the output of the pumps 1, 2, 3

5

0

5

0

5

0

5

0 5

nyut with the line 13 of the issuance of the solution to the consumer.

The salt solution from the tank 6 is poured into the tank 7, in which, in the case of accumulation of the solution during storage, sludge and a qualitative improvement of the saline solution occur.

To prevent salt from crystallizing and precipitating, a slurry pump 3 is switched on to the circulation mode.

The flow diagram of the pump piping 1,2,3,4 allows performing numerous operations of the cascade method of dissolving salts and servicing the unit during operation.

The cascade method of dissolving salts is characterized in that the process of dissolving the salts proceeds continuously.

At the beginning of the technological chain of the device for dissolving salts, salt and hot water are constantly supplied, and at the end, the prepared solution is constantly given out. Known basic devices have a periodically repeating cycle - the preparation of saline solution and the delivery of the finished solution. When the tank is released from the finished solution, the process of filling the salt and pouring water is stopped, which essentially characterizes the frequency of the technological process.

The proposed device in comparison with the base object has a positive technical and economic effect due to the continuity of the process of salt dissolution. The continuity of the cascade method allows to increase the performance of the node in comparison with the base object, i.e. with the same components, the proposed device will be 2-3 times more productive.

The proposed device provides a significant improvement in the quality of the saline solution, which, thanks to the cascade overflow, settles much better in tanks and does not have suspended undissolved particles.

Compared with the base object, the proposed device with the same quality of saline solution gives daily performance in volume of the finished saline solution, exceeding the maximum base by more than 5 times. With optimal daily productivity, a significant increase in the quality of the finished solution is achieved, because not only sludge from inclusions is ensured, but also density equalization. The proposed device provides simultaneous preparation and delivery of various

containers of the finished solution of different density required at a given moment, because with a lower density, the prepared solution can be in tank 7. And in a larger tank, in tank 6. In tank 5 there is a salt solution with a maximum density, although with a maximum density, the salt solution can be in all tanks 5, b, 7 and in the storage itself. which significantly distinguishes the proposed device from the base. With a new design, the use of the proposed technical solution gives a significant reduction in production areas, earthwork, materials and facilities. Significantly improved economic performance. With the new construction of the salt solution unit, the proposed device will give a positive economic effect.

The proposed technical solution gives a positive economic effect during construction and operation.

Claims (2)

1. A device for dissolving salts, containing two tanks, connected in series through a pipeline, characterized in that, in order to increase productivity by ensuring the continuity of the process and hydrodynamic mixing of the solution, the device is equipped additional at least one tank, trays connecting the tanks installed with lowering level relative to each other, with each tank is equipped with a slurry pump with inlet and outlet nozzles, the pumps are interconnected by pipelines and connected to the mains for supplying hot water and the removal of saline. 2. Device pop. 1, characterized in that, in order to clean the saline from mechanical impurities, hydrocyclones and sludge traps are installed on the inlet pipelines of the pumps. sixteen 7 in Figure 1.