280 results about "Limescale" patented technology

The invention discloses a medicament for treating composite water in a hot water boiler. The medicament comprises the following components by mass percent: 0.1-3% of inorganic phosphate, 0.1-2% of organic phosphoric acid and/or organic phosphate, 0.1-4% of component A, 0.1-3% of component B, 0.6-1.0% of organic amine deoxidizer, 0.1-2% of tannin and/or chitosan and the balance of water, wherein the mass percent of the components is 100%, the component A is one or more of an organic antisludging agent, an organic dispersant and an organic dispersible antisludging agent, and the component B is one or more of an organic carboxylic acid corrosion inhibitor, an organic carboxylate corrosion inhibitor and sodium methylene dinaphthalenesulfonate. The invention further discloses a preparation method and a use method of the medicament, the preparation process is clean, and the medicament is low in toxicity for body health and environment in the using process. The medicament is excellent in corrosion resistance and scale inhibition effects and simple and convenient to store and transport, and the corrosion and scale inhibition effects cannot be reduced after the medicament is stored and transported for a long term.

Disclosed herein are methods of preventing or reducing scale formation or corrosion by combining at least one scale-forming fluid comprising at least one scaling compound with at least one anti-scale material chosen from at least one scale-adsorbent agent. The methods may reduce or prevent the formation of scale on surfaces of liquid-related process equipment, such as boilers and heat exchangers.

A cleaning implement comprises an erodible foam substrate, such as a melamine foam substrate and a controlled release system comprising an active agent. The controlled release system comprises a component selected from the group consisting of a polymer matrix, a microcapsule, a particulate porous carrier, a complexing agent, a semi-permeable film and a combination thereof and the active agent is selected from the group consisting of a surfactant, a bleaching agent, a limescale reducing agent, a biocide, a solvent and a mixture thereof.

A methods of the present invention for inhibiting silica scale formation and corrosion in aqueous systems where soluble silica residuals (SiO₂) are maintained in excess of 200 mg/L, and source water silica deposition is inhibited with silica accumulations as high as 4000 mg/L (cycled accumulation) from evaporation and concentration of source water. The methods of the present invention also provides inhibition of corrosion for carbon steel at corrosion rates of less than 0.3 mpy (mils per year), and less than 0.1 mpy for copper, copper alloy, and stainless steel alloys in highly concentrated (high dissolved solids) waters. The methods of the present invention comprise pretreatment removal of hardness ions from the makeup source water, maintenance of electrical conductivity, and elevating the pH level of the aqueous environment. Thereafter, specified water chemistry residual ranges are maintained in the aqueous system to achieve inhibition of scale and corrosion.

The present invention is directed to the use of hydrophilic terpolymers in hard surface cleaners which provide easier cleaning for surface soils such as hard water stains, soap scum, limescale, mud, food, toilet stains, oil, grease, particulates and the like as well as anti-fog effects on hard surfaces such as glass, mirrors, ceramic and plastic by causing water droplets to coalesce into a film.

The invention provides an electric water heating device with an automatic limescale removal function. The electric water heating device comprises an electric water heating device shell, an electric water heating device liner, a filler, a heating device, a drain outlet, a water inlet, a water outlet, a TDS monitoring module, a magnetization module, an ultrasonic vibrator, an ultrasonic generator, adisplay module, a limescale removal adding device, a control module and an electromagnetic valve. By adopting an intelligent control mode, through the magnetization module, ordinary tap water is converted into magnetic water, limescale is prevented from being generated, the water quality in the electric water heating device liner is detected through the TDS monitoring module so as to judge whether limescale removal needs to be conducted on the electric water heating device liner or not, the ultrasonic vibrator and the ultrasonic generator generates ultrasonic waves to wash limescale, the limescale removal adding device delivers a liquid limescale removal agent into the electric water heating device liner through the water inlet, and through a preventing and removing combined method, the limescale is thoroughly removed.

A methods for inhibiting silica scale formation and corrosion in aqueous systems where soluble silica (SiO₂) can be maintained at residuals below 200 mg/L, but more preferably maintained at greater than 200 mg/L as SiO₂, without silica scale and with control of deposition of source water silica accumulations as high as 4000 mg/L (cycled accumulation) from evaporation and concentration of source water. The methods of the present invention also provide highly effective inhibition of corrosion for carbon steel, copper, copper alloy, and stainless steel alloys. The methods of the present invention comprise pretreatment removal of hardness ions from the makeup source water, maintenance of electrical conductivity, and elevating the pH level of the aqueous environment. Thereafter, specified water chemistry residual ranges are maintained in the aqueous system to achieve inhibition of scale and corrosion.

A scale dissolver fluid for dissolving scale in a subterranean hydrocarbon-bearing formation comprises an effective amount of a scale dissolver formulation and an effective amount of a surfactant for controlling the viscosity of the fluid. In use, formation hydrocarbons act on the surfactant to reduce the viscosity of the fluid so that the fluid selectively invades a hydrocarbon-bearing zone of the formation.

The invention belongs to the technical field of hot water bottles, in particular to a hot water kettle with scale removing and heat preservation, including a pot body, a matching lid is arranged at the mouth of the kettle body, the bottom of the kettle body is rotatably connected with a rotating shaft, the rotating shaft is coaxially fixedly connected with an impeller driven by bubbles, sliding holes are arranged on the side walls of the free ends of a plurality of blades of the impeller, sliding rods matching with the sliding holes are arranged, and the sliding rods are freely and fixedly connected with a second scraper for cleaning the inner wall of the kettle body. The advantages are: the invention can drive the blade to rotate through bubbles in boiling water, so that the first scraperand the second scraper can synchronously rotate to remove the scale from the inner wall and the bottom of the hot water kettle, in addition, the steam generated when the water boils has a higher temperature, and the steam generated is collected into the heat preservation chamber to heat preservation the hot water kettle and recover and utilize the heat in the steam.

The invention relates to a limescale monitoring method. The method comprises the following steps that the limescale generation speed of water different in hardness is initialized, and the alarm limescale mass corresponding to a descaling alarm is initialized; the current water hardness is detected and acquired, and the corresponding limescale generation speed is acquired; the limescale generationtime of the water with the current hardness is acquired; the mass of new limescale generated by the water with the current hardness is calculated; the calculated new limescale mass is accumulated to the history limescale mass to form the current limescale mass, and the current limescale mass is used as the new history limescale mass for storage; whether or not the current limescale mass reaches the alarm limescale mass is judged, and if yes, descaling reminding and a descaling response are conducted. According to the limescale monitoring method, even the situation occurs that when the water quality is replaced, the hardness of the water is changed, the real-time limescale generation amount can be accurately calculated, and an alarm is given in time. The invention further relates to an electric steam box applying the limescale monitoring method. The use convenience is improved, and the user experience is improved.

A water quality control method for an evaporative cooling water chiller uses a water pump to transport cooling water from a water tank to a water-spraying element via a water pipe. The cooling water is sprayed onto fins and a refrigerant pipe of a first heat exchanger, flows along the fins and is collected in the water tank. Thereby, the cooling water reduces the temperature of the heat exchanger. The water pump is set to operate for a first period and to stop for a second period so that the temperature of the fins and the refrigerant pipe increases. Thereby, the limescales attached to the heat exchanger are detached and drop into the water tank. Subsequently the water pump is turned on again. The cooling water in the water tank flushes out the accumulated particles on the bottom of the water tank, and clean cooling water is added.

The invention discloses a vaporizing boiler capable of removing scale and a steam brush, and belongs to clothes ironing equipment. By the aid of the vaporizing boiler and the steam brush, the problem of incapability of clearing water scale of existing vaporizing boilers can be solved. The vaporizing boiler and the steam brush have the advantages that an opening is formed in an inner cavity of a boiler, a flow channel and the boiler are separately arranged, accordingly, the flow channel can be taken out from the inner cavity via the opening and can be cleaned, and the scale can be removed; particularly, a steam outlet panel and the flow channel are integrated or connected with each other, only the steam outlet panel needs to be detached when the scale is required to be cleaned, and accordingly the steam outlet panel and the flow channel can be conveniently taken out of the inner cavity of the boiler together; the steam outlet panel and the flow channel are separately arranged, and accordingly application modes of the vaporizing boiler can be increased.

The invention relates to a gas water heater descaling device and a descaling method thereof. The gas water heater descaling device is characterized in that the chemical reaction principle is utilized, a descaling agent is added into a water tank of the gas water heater, the water temperature is raised and maintained to certain temperature through heating, a water pump is started to enable the water in the water tank to circulate, the descaling agent and the main components of the accumulated scale generate chemical reaction, then the firm accumulated dirt is loosened or dissolved, and the accumulated scale is cleaned. The gas water heater descaling device has the advantages that the descaling agent can react with the water scale in the circulating flowing process, the descaling efficiency is higher, the descaling time can be freely controlled, and the accumulated scale is more thoroughly cleaned at higher temperature; after the descaling agent is added, the concentration is controlled to be stable, the descaling agent is freely added to guarantee the proper concentration, and the reaction of the accumulated scale is favorably realized; the bulky water scale is fully dissolved, the cleaning effect is good, the heating surface is clean, the good heat transfer effect is realized, and the gas consumption is saved; the structure is simple, the convenience in use is realized, the safety and reliability are realized, the descaling efficiency is high, and the usage amount of descaling amount is saved.

The invention discloses a safe, non-toxic, water-tight and non-scale water outlet pipe structure of a faucet. The safe, non-toxic, water-tight and non-scale water outlet pipe structure comprises a water outlet pipe of the faucet and a rubber film pipe. The rubber film pipe is inserted in the water outlet pipe of the faucet, one end of the rubber film pipe extends out of a water inlet of the water outlet pipe of the faucet and then sleeves the water outlet pipe of the faucet in an outwardly turned manner, the other end of the rubber film pipe extends out of a water outlet of the water outlet pipe of the faucet and then is connected with a T-shaped sleeve, and one end of the T-shaped sleeve is clamped at the water outlet of the water outlet pipe of the faucet after the other end of the T-shaped sleeve is arranged in the water outlet pipe of the faucet; sealing grooves are formed in the outer wall of the water outlet pipe of the faucet, and the rubber film pipe extends out of the water inlet of the water outlet pipe of the faucet and then sleeves the sealing grooves in an outwardly turned manner. The safe, non-toxic, water-tight and non-scale water outlet pipe structure has the advantages that when water flows into the safe, non-toxic, water-tight and non-scale water outlet pipe structure, the water outlet pipe, which is of a metal structure, of the faucet is not in contact with the water, accordingly, safe, non-toxic, water-tight and non-scale effects can be realized, and the like.

The invention provides a guanidyl disinfecting anti-scaling inhibitor for oilfield water reinjection. A production method includes: 1) mixing 100 parts by weight of guanidine hydrochloride and 120-180parts of amine to allow reacting at 80 DEG C, stirring while heating, holding the temperature of 80 DEG C, continuing to stir to allow reacting for 2 hours so as to synthesize aminoguanidine hydrochloride; 2) cooling the aminoguanidine hydrochloride to normal temperature, adding 200-300 parts by weight of water, adding 1-5 parts by weight of a surfactant, and stirring and dissolving to generate aminoguanidine hydrochloride solution; 3) allowing the aminoguanidine hydrochloride solution to react with 1-20 parts by weight of an acid to generate a finished functional guanidine hydrochloride solution, namely the guanidyl disinfecting anti-scaling inhibitor for oilfield water reinjection. The guanidyl disinfecting anti-scaling inhibitor for oilfield water reinjection has the advantages that the inhibitor has high antibacterial activity, broad-spectrum disinfecting performance, is especially efficient to kill sulfate-reducing bacteria, saprophytic bacteria, iron bacteria and the like in oilfield water, and can also remove scaling matters in the oilfield water and water scale generated on the inner wall of a duct.

The invention provides a softener of the scale that is difficult to be removed from a boiler used in a power station and a two-step washing scale removing method. The softener consists of the raw materials as follows based on the mass ratio: 0.5 to 7 percent of sodium ethylenediamine tetramethylene phosphonate, 0.6 to 8 percent of sodium polyacrylate, 10 to 40 percent of Na3PO4 question mark 12H2O, 8 to 35 percent of NaOH, 15 to 65 percent of Na2CO3, 2 to 10 percent of sodium humate and 0.5 to 5 percent of disodium ethylenediamine tetraacetate. The two-step scale removing method comprises the steps as follows: the softener for removing the scale is added during the operation of the boiler till the pH value is 10 to 12, the pH value of the water in the boiler is kept for 5 to 7 days under normal waste discharging situation to lead the scale of the boiler to fall off after being softened and dissolved; a corrosion inhibiting hydrochloride cleaning agent bought from market is used for cleaning at normal temperature according to a technique of Chemical Cleaning Rules of Boilers, thereby greatly shortening operation time with good cleaning effect. The scale cleaning time can be shortened to 2 to 3 days from the original 8 to 10 days. The softener for removing the scale has the advantages of innocuity, no harm and no corrosion, and can completely soften and dissolve the scale that is difficult to be removed. The problem that difficult scale of boilers of medium and low voltage power stations can not be cleaned in the prior art. The softener is also applicable to industrial boilers.