306 results about "Descaling agent" patented technology

The invention relates to a metal degreasing and rust removing agent, in particular to an environment-friendly type steel degreasing and rust removing agent, which belongs to the technical field of chemical industry. It includes hydrochloric acid, oxalic acid, surfactants, complexing agents, and corrosion inhibitors. The content of hydrochloric acid is the main factor affecting rust removal. The addition of oxalic acid can significantly reduce acid mist. Surfactants have the functions of degreasing and fog suppression. Due to the synergistic effect of each component of the formula, the process has the characteristics of normal temperature, rapidity, high efficiency, and environmental protection.

The invention discloses a low-corrosion and high-cleanness chemical cleaning method for condenser. The cleaning process of the method is shown as follows: performing primary washing and leakage detection, adding a disinfectant slime remover for cleaning soft deposits, adding a Lan-826 multipurpose pickling inhibitor and a reducing agent to perform corrosion inhibition treatment, adding aGJ-2E rust removal and descaling agent and a Lan-826 multipurpose pickling inhibitor for removing hard scale, neutralizing with an alkaline cleaning neutralizer, and passivating or pre-filming. The method has the beneficial effects that the biological slime of the condenser is fully cleaned; the used corrosion inhibition method can be used for reducing the corrosion of the pickling cleaning agent to the pipeline of the condenser, and improving the service life of the pipeline of the condenser; meanwhile, the used pickling cleaning agent can be used for fully cleaning the pipeline hard scale, and the pipeline is cleaned more drastically; the cleaning time is short, the descaling efficiency is high, the labor intensity is low, the technology is simple, and the operation parameter of the cleaned set mainly achieves the plate rating.

The invention relates to a scale and rust remover used for cleaning main frame of central air-conditioner. It is characterized in that it comprises solid mixture and liquid inhibitor; said solid mixture comprises amidosulfonic acid, polyphosphinic acid chelating agent, silicofluoride scale and rust dissolution promotor, non-ionic surface activator aliphatic alcohol polyester penetrant, their weight proportions in order are as follows: 75%-85%, 5%-10%, 5%-10%, 1%-5%; said inhibitor is liquid and comprises hexamethylene tetramin, aniline and methyl azimido-benzene according to weight proportion of 2: 2: 1. Said inhibitor is added into acidic washing solution with its weight amount being 0.3% of that of water amount. The product can dissolve carbonate, silicate, sulfate and iron oxide, the descaling speed at room temperature is fast, and is increased within 60 Deg. C, the corrosive rate to metal is pretty low, and there is no acid mist and harmful gas generation during desaling process.

The present pertains to the field of chemical industry, wherein an antisludging agent for industrial circulating water systems is disclosed, which comprises acroleic acid-acrylate-petroleum sulfonate copolymer, mercaptobenzothiazole, sodium humate, lignin and water. The antisludging agent has good protection action to industrial cooling-water systems.

The invention relates to a barium sulfate and strontium sulfate descaling agent and a preparation method thereof. According to the invention, a proper water soluble solvent is added into a formula which takes nitrogenous polybasic carboxylic acid as a main component, so that the components are better matched in function, and the descaling performance of the final product is further improved. In addition, the cost of the solvent is lower than that of other components, so that the cost of the final product is lowered. Raw materials for producing the descaling agent can be purchased from chemical engineering markets at home and abroad, the synthetic process is simple and the product quality is stable. The barium sulfate and strontium sulfate descaling agent for oil prepared by the invention can be suitable for water injection stratums, perforation wells, sleeve orifices, underground pumps, tubing strings, valves, transmission pipelines and the like. The descaling agent is good in compatibility and is an ideal descaling agent for removing barium sulfate and strontium sulfate for an oil field.

Beverage preparation machine comprising : a fluid circuit (2) comprising a water reservoir (4), a water pump (5), a heating means (7), a beverage producing module (9), which are fluidically connected for circulating water from the reservoir to the beverage producing module, wherein an in-linedescaling system (3) is provided in the fluid circuit(2)comprising a dedicated compartment (15) intended for receiving a predetermined dose of a water soluble / dispersible descaling agent (19). The invention also relates to a method for automatically descaling and rinsing the fluid circuit (2).

The invention relates to a nanopigment digital printing ink-jet ink, which consists of the following components: nanopigment dispersion color paste; humectant; descaling agent; bactericidal agent; control agent for PH value; surface activator; resin and deionized water. The manufacturing technique includes the following steps: (A) predispersing and grinding the pigment according to the fineness requirement to less than 200 nanometers of D90 to prepare nanopigment dispersion color paste; (B) mixing humectant, descaling agent; bactericidal agent, control agent for PH value, surface activator, resin and deionized water at the normal temperature and sufficiently stirring to obtain the mixed solution; (C) adding the nanopigment dispersion color paste into the mixed solution obtained by step (B) and sufficiently stirring to obtain mixed solution; (D) stewing and curing the mixed solution obtained by step (C) to obtain the aged mixed solution; (E) filtering the aged mixed solution obtained by step (D) by filter membrane to obtain the end product.

The invention belongs to the technical field of chemical cleaning of boiler pipelines, and particularly discloses a boiler pipeline descaling agent and a preparation method thereof. The descaling agent mainly consists of the following components in percentage by weight: 12 to 15 percent of aminosulfonic acid, 3 to 6 percent of hydrofluoric acid, 3 to 5 percent of acid washing corrosion inhibitor and the balance of water. The method comprises the following steps of: (1) taking water, adding the aminosulfonic acid and the hydrofluoric acid, and then stirring the solution uniformly; (2) adding the acid washing corrosion inhibitor into the solution of the (1), and then stirring the solution uniformly; and (3) adding water into the solution of the (2) till the total volume meets the requirement of 100 percent, and stirring the solution uniformly to obtain a finished product. Proved by a large amount of scientific experiments and years of internal practice application, the descaling agent not only has good cleaning and descaling effects, but also overcomes the defect of metal corrosion.

The invention provides an organic descaling composition, which includes an organic cleaning agent and a corrosion inhibitor CM-911, and the weight ratio of the organic cleaning agent and the corrosion inhibitor is 100:0.1-0.3. The organic cleaning agent includes the follow components by weight: 1%-15% of maleic acid-crylic acid copolymer (MA-AA), 1%-25% of 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), 2%-30% of amino trimethylene phosphonic acid (ATMP), 0.03%-0.5% of penetrating agent JFC and balance of water. The organic descaling agent provided by the present invention has advantages of fast reaction speed, small corrosivity for material and high descaling efficiency.

The invention relates to a water treatment composition, in particular a solid descaling agent composition to be charged into water-cooling heat exchanger system, wherein organic acid is utilized as the host agent, ammonium salt is used as the auxiliary agent, surface active agent and metallic inhibitor are used as auxiliary agents, the weight percentage of each raw materials are, host agent 51-65%, the auxiliary agent 16-35%, the adjuvant 8-20%. The process for producing the scale scavenging agent comprises raw material sieving, premixing, machine mixing, measurement, deformer addition, and hermetic package.

The invention provides an efficient and environment-friendly oil-removing, rust-removing and descaling agent and a preparation method thereof. The efficient and environment-friendly oil-removing, rust-removing and descaling agent is composed of following raw materials: 1-15% of hydroxyethylidene diphosphonic acid, 5-18% of citric acid, 8-25% of phosphoric acid, 4-18% of oxalic acid and 10-30% of nano oil-removing emulsifier. With the adoption of the efficient and environment-friendly oil-removing, rust-removing and descaling agent, various oil dirt, wax, oxides, oxide skins, welding spots, rust and the like can be completely cleaned; the treatment time is short and is rapider and more convenient; the efficient and environment-friendly oil-removing, rust-removing and descaling agent does not contain strong acids, strong alkalis and organic solvents and has low environmental pollution; the efficient and environment-friendly oil-removing, rust-removing and descaling agent has no stimulation and no damages on a human body and is safer and more reliable to use.

The present invention relates to compositions for deodorizing and cleaning, in particular solid compositions in the form of effervescent tablets which can be reconstituted in water to obtain solutions for cleaning and deodorizing. The compositions comprise one or more Bacillus subtilis strain(s), one or more surfactant(s), one or more fragrance(s), one or more descaling agent(s), and one or more effervescent agent(s). The invention further relates to a kit comprising such tablets, as well as methods for obtaining cleaning and deodorizing tablets and solutions and their use for cleaning and deodorizing.

The invention relates to a descaling agent for water scale of condensing equipment and a descaling method. The descaling agent comprises the following materials in percentage by weight: 15%-30% of dissolving agents, 2%-5% of permeating agents, 1%-5% of corrosion inhibitors, 10%-30% of cosolvents, 20%-30% of purified water and the balance of ethanol, wherein the dissolving agents are selected from oxalic acid, citric acid, ascorbic acid, salicylic acid and glacial acetic acid; the permeating agents are selected from diethyl succinate, butyl cellusolve and sulfonated dioctyl succinate sodium salt; the corrosion inhibitors are selected from urotropine, aniline and diethyl thiourea or rodine; the cosolvents are selected from para-benzoic acid, urea, cyclohexanone, acetamide and sodium salicylate. The descaling agent disclosed by the invention is obtained by blending the raw materials, has high descaling capacity and higher descaling speed by utilizing combined effect, is less in corrosion on equipment and low in price and can save a large amount of cleaning expense, enhance the equipment operation level, the energy utilization level and the production efficiency and greatly reduce the product production cost.

The invention discloses a descaling agent. The descaling agent is prepared from the following components in percentage by mass: 1%-5% of acetic acid, 0.5%-6% of citric acid, 0.1%-0.6% of fumaric acid, 5%-10%o of sulfamic acid, 5%-40% of hydrochloric acid, 2%-10% of lactic acid, 1%-20% of maleic acid, 1%-3% of sodium dodecyl benzene sulfonate, 1%-3% of metal corrosion inhibitor, 5%-8% of corrosion inhibitor, 2%-4% of auxiliary materials and the balance of water. The descaling agent is non-poisonous and harmless to human bodies, capable of rapidly dissolving water scale, safe and reliable, has low corrosion to devices and mild performances, can save energy sources, does not hurt the skin and does not influence human health.

The invention discloses a descaling agent used for a hydrogenation device and the preparation method and the application thereof, and solves the coking and scale deposition of the relevant equipment during the petroleum refining process, such as a hydrogenation device reactor, a heating furnace, and a heat exchanger. The general formula of the hydrogenation descaling agent is shown as the formula (1), wherein, R is C8-C20 alkyl; R2 is H, R1 is C1-C24 alkyl, alkoxy or aryl; or both of the R1 and the R2 are C1-C15 alkyl, alkoxy or aryl. Through adopting the descaling agent of the invention, not only the coking and scale deposition can be inhibited, but also the production is simple and easy, and the descaling agent is harmless to the environment.

The invention discloses a steam generator, a descaling control method and device for the steam generator and an electric appliance. The descaling control method includes the following steps that a water pump of a steam generator is controlled to stop supply water, the steam generator is heated to the preset temperature, the first preset time is maintained, and therefore the steam generator enters a dry burning state; and the water pump is controlled to be started within the second preset time, the saturated steam pressure in the steam generator reaches the preset value so that water scale in the steam generator can be flushed out. By means of the method, the water scale is flushed and removed through pulse steam, concentration of the water scale in the steam generator can be prevented, the heating efficiency of the steam generator is affected, and meanwhile the phenomenon that precipitation of harmful components happens due to the fact that a chemical acid descaling agent corrodes the steam generator, and the human health is threatened can be avoided.

The invention discloses a descaling and rinsing method for a plate heat exchange unit. A descaling and rinsing device used in the method comprises a circulating pipe, a rinsing pump, a corrosion inhibitor dosing box, a descaling agent dosing box, a pH value detector and a control box. When the plate heat exchange unit is descaled and rinsed, the descaling and rinsing device only needs to be connected to the plate heat exchange unit to complete the steps of agent dosing, agent adding, descaling and rinsing. The descaling and rinsing method for the plate heat exchange unit has the advantages that the plate heat exchange unit is descaled and rinsed without being dismounted, operation is easy, the control precision is high, the descaling effect is good, and the method can be applied and popularized conveniently.

The invention relates to a solid agentia for boiler water treatment and a preparation method thereof. The solid agentia comprises an agentia raw material and a binding agent, wherein the agentia raw material is one selected from a boiler tank cleaning agent, a boiler descaling agent, a boiler descaling antisludging agent, a boiler deoxidizing agent and an alkaline descaling agent; 3%-8% of the binding agent is added into the agentia raw material according to the weight percent. The preparation method comprises the following steps: raw material mixing; compression forming; vacuum dehumidification treatment; and the like. According to the solid agentia, the prepared solid caky agentia for boiler treatment is convenient for packaging, transportation and use, and during boiler treatment in all stages, various solid tablets for boiler treatment are put in soften water for dilution according to the proportion, so that a liquid water treating agent is generated, and is used for treating the boiler; the solid agentia for boiler water treatment prepared through the method avoids environmental pollution problem, and is small in volume, less in transportation volume, easy to store, convenient to use, economical and applicable.

The invention discloses an eliminating method of calcium ion in the gold pile leaching course through detergent, which comprises the following steps: adding sodium tripolyphosphate in the liquid reserving pond of sprinkling liquid in the alkaline-adjusting period; piling the sprinkling liquid; adding certain quantity of tripolyphosphate in each sprinkling circulation continuously until finishing adding the whole quantity.

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 relates to the technical field of electrical equipment, in particular to an ultrasonic descaling device of a water heater. The ultrasonic descaling device comprises a shell, an inner container, a water inlet pipe, a water outlet pipe, a heating pipe and a control panel. The inner container is connected with an ultrasonic generating device, and an automatic descaling device body is connected between the water inlet pipe and the water outlet pipe and comprises a waste liquid circulating and buffer tank, a control valve and a descaling agent container. The descaling agent container is connected with a reservoir, and the reservoir is connected with the water inlet pipe through a water pump and a water pipe. The inner wall of the inner container can be effectively prevented from generating scale through the ultrasonic generating device. When the automatic descaling device body is used, water heated to generate the scale in the inner container is firstly drained to the waste liquid circulating and buffer tank from the water outlet pipe and then enters the descaling agent container; and after the scale is removed through a descaling agent, the water obtained after scale removal is fed into the inner container through the water pump via the water pipe, and therefore the aims of automatically and thoroughly removing the scale and guaranteeing the service life of the heating pipe, a sensitive heating pipe and other parts can be achieved.

The present invention belongs to the field of chemical technology, and discloses one kind of corrosion inhibiting descaling agent. The corrosion inhibiting descaling agent contains mercaptobenzothiazole, hydroxy ethylidene diphosphonic acid, acrylic acid-acrylate-sulfonate copolymer, sodium humate, lignin, sodium hydroxide and water. The corrosion inhibiting descaling agent of the present invention is suitable for central air conditioning system, cooling water system, etc. After being added into circulating water system, the corrosion inhibiting descaling agent of the present invention can form one compact protecting layer on the surface of equipment or pipeline to reach effective corrosion inhibiting and scale-preventing effect.

The invention provides a method for measuring corrosion performance of a descaling agent. The method comprises the steps of (a) preparing an acid descaling agent solution and a corrosion inhibitor solution; (b) wiping a test block and putting the test block into a container to degrease and dewater; taking the test block out to dry, then measuring size and weight; (c) adding the acid descaling agent solution and the corrosion inhibitor solution into a glass bottle; (d) putting the glass bottle into a constant-temperature water bath, and taking the test block out to observe, wash and dry; (e) putting the test block into a container to further degrease and dewater; taking the test block out, washing residual acid away, immersing the test block into a sodium hydroxide solution, washing and putting the test block into absolute ethyl alcohol to wash and dewater for two times; taking the test block out to dry, then wrapping up the test block by using filter paper to store in a dryer for 1 hour and then weigh with precision of 0.1mg; (f) calculating a corrosion rate of an anti-scaling agent. The method is capable of quickly testing the corrosion performance of the descalling agent; meanwhile, the method is accurate in testing result and simple in testing steps; through the method, the testing cost is greatly reduced.

The invention discloses an equipment descaling agent and a preparation method thereof. The equipment descaling agent contains the following ingredients in parts by weight: 30-40 parts of aminosulfonic acid, 15-25 parts of ethylenediamine tetra-acetic acid, 15-25 parts of citric acid, 1-5 parts of sodium lauryl sulfate, 0.5-3 parts of sodium polystyrene sulfonate, 5-10 parts of lignin, 3-8 parts of hexamethylene tetramine, 2-8 parts of ethanol, 0.5-1 part of sodium tripolyphosphate and 120-150 parts of water. The preparation method comprises the steps of heating the water to the temperature of 60-70 DEG C, adding all the ingredients into the water except for ethanol and sodium tripolyphosphate, stirring until the ingredients are dissolved, then, lowering the temperature to 50-60 DEG C, adding ethanol and sodium tripolyphosphate, and continuing to stir until a solution is clarified, thereby obtaining the equipment descaling agent. The equipment descaling agent disclosed by the invention is safe and non-toxic, is simple in production process, low in cost, convenient in use and good in descaling effect, and can be widely used.

The invention discloses an electric water heater liner cleaning method and an electric water heater. The electric water heater liner cleaning method includes steps that S1, closing a water inlet valve, and opening a sewage drain valve to discharge water in a liner through the sewage drain valve; S2, filling descaling agent in a descaling agent adding device, opening the water inlet valve, enabling the water to enter the descaling agent adding device to drive the descaling agent to enter the liner, closing the water inlet valve, wherein the water inlet quantity of water is lower than a preset capacity, and the depth of the water in the liner is smaller than a preset distance; S3, keeping the water in the liner for a preset time; S4, opening the sewage drain valve to drain all the water in the liner; S5, opening and closing the water inlet valve and sewage drain valve to wash the descaling agent in the liner for several times. The electric water heater liner cleaning method removes limescale deposited at the bottom of the liner through the descaling agent without damaging a magnesium rod in the liner, the descaling rate is higher than 90%, and the descaling effect is better.

The invention discloses a glauberite pipeline scale descaling agent and application thereof. The descaling agent comprises the following components in percentage by weight: 10-25% of NaOH, 5-15% of Na2S2O35H2O, and 0.05-0.5% of sodium polyacrylate. The descaling agent provided by the invention can be used for transforming insoluble CaSO4 into soluble Ca(OH)2 and Na2SO4; a proper amount of Na2S2O35H2O serving as a complexing agent is added and complexed with Ca<2+> in Ca(OH)2 to form a more stable complex, a new precipitate is prevented from generating, and a dissolution reaction is promoted to happen; a proper amount of EDTA (ethylene diamine tetraacetic acid) and a proper amount of polyacrylamide are added to realize a more remarkable scale inhibition effect; and acid is not contained in the components of the descaling agent, and no acid is generated in the descaling process, so that the descaling agent has small corrosive influence on a salt manufacturing pipeline and small influence on the mechanical performance of the salt manufacturing pipeline; and after being subjected to simple sediment treatment, a residual solution obtained after filtering can be returned to a bittern pre-treatment system, so that the alkaline solution in the residual solution can be utilized, so that sewage is hardly drained, and the descaling agent is environmentally-friendly.

The invention relates to an offshore oil and gas field gathering and transmission pipe descaling and descaling effect evaluation method, which comprises the following steps of: a, preparing a chemical tank; b, injecting neutral descaling agent in the chemical tank; c, detecting concentration of total calcium ions in water samples at the head end and the tail end of a gathering and transmission pipe by adopting an EDTA (ethylene diamine tetraacetic acid) titration method; d, starting up a chemical injection pump to pump the descaling agent into the head end of the gathering and transmission pipe; e, after the descaling agent is injected, periodically detecting the concentration of total calcium ions in the water samples at the head end and the tail end of the gathering and transmission pipe by continuously adopting the EDTA titration method; f, adjusting the input quantity of the descaling agent till the concentration of the total calcium ions in the water sample at the head end of the gathering and transmission pipe is obviously smaller than the concentration of the total calcium ions in the water sample at the tail end of the gathering and transmission pipe; g, conducting mechanical descaling by adopting a ball passing operation method; and h, when the concentration of the total calcium ions in the water sample at the head end of the gathering and transmission pipe is detected to be equal to the concentration of the total calcium ions in the water sample at the tail end of the gathering and transmission pipe, adjusting the concentration of the neutral descaling agent to a low value.

The invention discloses a toilet descaling agent. The toilet descaling agent is prepared by mixing sodium alkyl benzene sulfonate, oxalic acid, sulfamic acid, sodium silicate, polyethylene glycol and anhydrous sodium sulfate. The toilet descaling agent has the advantages of low production cost and good descaling effect.