36results about How to "Achieve descaling" patented technology

A multistage thermal desalination system, together with its associated method of use, allows de-scaling of subsystems exposed to saturated saltwater by alternating the saturation stage of the process between two neighboring physical desalination stages. The desalination system is provided with at least one transfer conduit, at least one pump, and valving to permit saltwaters being desalinated by higher and lower stage desalination subsystems to be swapped. By replacing the saturated saltwater in a higher salt concentration desalination subsystem with lower salt concentration saltwater, the scaling in higher salt concentration desalination subsystem is reduced while the saturation load is placed on another of the desalination subsystems.

The invention provides a water treatment corrosion inhibitor and a water treatment agent containing the same. The water treatment corrosion inhibitor is prepared from sodium silicate, sodium oleate, sodium dodecyl benzene sulfonate and hexamethylenetetramine, wherein the addition of various components in each liter of water to be processed is as follows: 0.1-2g of sodium silicate, 0.02-2g of sodium oleate, 0.1-2g of sodium dodecyl benzene sulfonate, and 0.05-2g of hexamethylenetetramine; and the water treatment agent comprises sodium humate and a corrosion inhibitor. The corrosion inhibitor disclosed by the invention is free of poison and pollution, and can be compounded with a sodium humate water treatment agent for use. The corrosion inhibitor can generate a synergistic effect together with sodium humate; the functions of the anti-scaling action, the contaminant separation, sterilization and algae removal, and corrosion inhibition are fully developed; and the sodium humate water treatment agent product is further perfected.

The invention relates to a method for pickling hot-rolled special steel strips (1) having an austenite, ferrite and / or martensite structure. The inventive method is carried out in a pickling line (7) with pickling sections (8) containing acids and rinsing sections (9) containing rinsing water (15). The aim of the invention is to provide a method that does not require an additional stretch-leveling step for descaling. The costs for pickling are reduced by pickling the hot-rolled special steel strip (1) in the pickling sections (8) with hydrochloric acid (13) and rinsing it in the first rinsing sections (9) with azotic acid (14) or an equivalent substitute pickling medium (14b) and treating it in further rinsing sections (9) with rinsing water (15).

The invention discloses an ozone reaction system, comprising an ozone reaction tower and an ozone machine, wherein the ozone reaction tower comprises a mixing chamber, a jet pump, a main gas inlet pipe and a drainage pipe, a water inlet of the jet pump is communicated with a circulating water outlet, and a water outlet of the jet pump is communicated with a circulating water inlet through an inner circulating pipeline; a gas-water jet mixer is arranged on the inner circulating pipeline, a gas outlet of the main gas inlet pipe is communicated with a gas inlet pipe of the gas-water jet mixer, and a gas inlet of the main gas inlet pipe is communicated with an ozone output port of the ozone machine; and an ORP (Oxidation-Reduction Potential) probe is arranged at a drainage port of the drainage pipe and is used for sending a detected ORP value to an electric control system, and the electric control system is used for controlling the oxygen supply amount of the ozone machine according to the magnitude of the received ORP value. By utilizing the ozone reaction system disclosed by the invention, ozone and culture water can be rapidly and sufficiently mixed so as to achieve the purposes ofinhibiting scale, removing scale, sterilizing, removing algae, preventing corrosion and stabilizing water quality, in addition, second pollution caused by water treatment can also be avoided.

The invention discloses an airbag type stab columnar pipe cleaner capable of dissolving water pressure and automatically rotating. The airbag type stab columnar pipe cleaner comprises a column body, wherein the column body is provided with a conical head part; three groups of rotary flow guiding plates are arranged on the outer wall of the column body and are equidistantly distributed along the circumferential direction of the column body at intervals; a pressure-proof airbag is arranged in an inner cavity of the column body; steel brushes are arranged on the flow guiding plates; each steel brush comprises a plurality of groups of comb teeth which are arranged in parallel; the comb teeth are firmly embedded in the flow guiding plates by steel nails or adhered to the flow guiding plates by steel wires; the flow guiding plates are fixed with the column body in an embedded way; the pressure-proof airbag adopts a sealed structure; the range of external pressure borne by the pressure-proof airbag is 0.6-1.0MPa; the column body is made of a high-strength polyurethane foam material; a polyurethane elastic material coating layer is paved on the surface of the column body. According to the airbag type columnar pipe cleaner disclosed by the invention, automatic rotation forwarding and steel brush cleaning of the pipe cleaner in a pipe through water flow pressure are realized, the pipe cleaner is enabled to successfully pass through a blocking point by an airbag type structure, higher hardness and higher strength are ensured by a steel nail type steel brush, and efficient cleaning on long, short and complicated pipelines can be realized.

The invention belongs to the technical field of scale prevention of shell-and-tube heat exchangers, and discloses a method for preventing and removing scale of anon-strong alkali solution by rare-earth porcelain sand. The method comprises the steps that the rare-earth porcelain sand is injected into a solution to be heat exchanged, and the rare-earth porcelain sand flows and is mixed with the solution to be heat exchanged. The invention further discloses application of the rare-earth porcelain sand in scale prevention and scale removal of the non-strong alkali solution. The method for preventing and removing scale of the non-strong alkali solution by the rare-earth porcelain sand has the beneficial effects that on-line scale prevention and scale removal are achieved by physical means, recycling is achieved, and the solution and the environment are not polluted.

The invention relates to a water direct-current electrolytic treatment process for circulating cooling and direct-current electrolytic treatment equipment for the circulating cooling, and shows the core concept that a bypass circulating system is arranged on a circulating cooling water system, and the direct-current electrolytic treatment equipment is arranged to treat the circulating cooling water. The direct-current electrolytic treatment equipment is used for scaling and separating out calcium and magnesium in the circulating water by utilizing cathodic hydrogen evolution reaction, and descaling and discharging the scale to continuously reduce the hardness of the system so as to preventing scale from generating; active materials separated from a specially dimensionally stable anode are utilized for exterminating bacteria and inhibiting the growth of bacteria, so that the problems due to blocking and corrosion are prevented; and simultaneously, the pH is increased by hydrogen evolution reaction, so that electrochemical corrosion can be effectively prevented. The direct-current electrolytic process realizes a plurality of functions in the same process, such as descaling, sterilizing and exterminating the bacteria. Compared with the conventional physical method and chemical method, the direct-current electrolytic treatment process has the advantages of being remarkable in effect, high in cleanability, capable of saving water source, low in energy consumption and low in cost, and can realize unattended operation.