36results about How to "Fast descaling" patented technology

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 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 discloses environment-friendly multi-purpose descaling liquid. The environment-friendly multi-purpose descaling liquid is used for removing water scales, oil scales, dirt and urine scales, and the key is that the environment-friendly multi-purpose descaling liquid is prepared from the following raw materials in percentage by weight: 2-7% of trisodium phosphate, 8-15% of phosphoric acid, 2-7% of polyethylene glycol, 3-8% of urea, 2-7% of industrial salt, 7-13% of a polymer composite synergistic active agent, 1-5% of ethylene diamine tetraacetic acid, 3-8% of fatty alcohol polyoxyethylene ether and the balance of water. The multi-purpose descaling liquid can rapidly remove the scales and has the advantages of good descaling effect, no irritation and no harm to human bodies, safety, no toxicity and no environmental pollution.

The invention relates to a system and a method for measuring a scale amount of a furnace tube of a boiler of a thermal power plant, wherein the system comprises an electrolytic stripping and descaling device, an ultrasonic cleaner for degreasing the furnace tube of the boiler before and after descaling and an electronic scale for weighing the masses of the furnace tube of the boiler before and after descaling; the electrolytic stripping and descaling device comprises a direct current electrolyser and an electrolytic tank accommodating an electrolytic stripping agent; the direct current electrolyser comprises a cathode and an anode which are separately connected to a platinum electrode and the furnace tube of the boiler; the platinum electrode and the furnace tube of the boiler are arranged in the electrolytic tank; direct current electrolysis is performed under the action of the electrolytic stripping agent to strip scales on the furnace tube of the boiler. The system provided by the invention has the technical effects of being high in descaling speed, short in consumed time and low in blank wastage of a matrix metal; damage on the matrix metal of the furnace tube is very small and blank correction is not performed commonly; the matrix can keep the original shape of the furnace tube under scales; and the system and method are quite beneficial for observing the corrosive shape of the metal under the scales of the furnace tube of the boiler.

The invention provides a composition for removing scale. The composition comprises the following ingredients by weight: 2 to 50 percent of aminosulfonic acid (NH2SO3H), 1 to 10 percent of sodium tripolyphosphate (STPP) and 0.5 to 5 per thousand of penetrating agent (JFC). The invention also provides a preparation method and applications of the composition. The composition has fast reaction velocity for removing scale, little corrosion to the material and high scale-removing rate.

The invention discloses a scavenger for clearing away PVC (polyvinyl chloride) polymer in a top condenser of a polymerization kettle, which comprises the following components by weight percentage: 60-80% of a chelator, 1-5% of a penetrant, 0.5-3% of a surfactant, 15-25% of a cosolvent and the balance of acetone or glycol. The scavenger is prepared by the steps of adding raw materials such as the chelator, the penetrant, the surfactant, the cosolvent and the like in a reactor, stirring, adding acetone or glycol after the raw materials are fully dissolved, and stirring uniformly; and finally filling. The scavenger for clearing away PVC polymer provided by the invention has strong chelation dissolving capacity, high dissolving rate, almost no corrosion to all metals and high descaling capacity, is convenient to use and fast in action, and does not affect the continuous normal production of enterprises. The scavenger has remarkable social and economic benefits.

The invention discloses a chemical cleaner for galvanizing equipment, and belongs to the technical field of chemical cleaning. The chemical cleaner is prepared from, in weight percent, 0.3-1.2% of surface active agents, 0.1-1.2% of imidazoline inhibitors, 0.1-0.8% of dispersing agents, 0.2-0.8% of additives, 7-8% of oxalic acid, 12-14% of hydrochloric acid and the balance water. According to the cleaner, inorganic acid and organic acid are mixed together through best distribution ratio, so that the cleaner has descaling and inhibiting functions, the inorganic acid, the organic acid, dodecyl benzyl ammonium chloride, the amphoteric imidazoline inhibitor and additives are compounded together, the dodecyl benzyl ammonium chloride has a good corrosion inhibition effect on zinc, so that the chemical cleaner for the galvanizing equipment is prepared, and the cleaner has low metal zinc corrosion rate, is high in descaling speed and meets descaling and corrosion inhibition requirements of the industrial galvanizing equipment.

The invention discloses a wet rotary cage sand blasting machine, and relates to the technical field of casting production equipment. The wet rotary cage sand blasting machine comprises a water tank, ahigh-pressure plunger pump, a pressure stabilizer, a pressure regulating valve, a high-pressure water pipe, a descaling nozzle, an air compressor, a pressure stabilizing cylinder, a high-pressure airpipe, a rotating cage motor, a rotating cage, a sand collecting hopper, a sand suction head and a swinging mechanism; the water tank is connected with the high-pressure plunger pump; the high-pressure plunger pump is connected with the descaling nozzle through the high-pressure water pipe; the high-pressure water pipe is provided with the pressure stabilizer and the pressure regulating valve; theair compressor is connected with the descaling nozzle through the high-pressure air pipe; the pressure stabilizing cylinder is arranged on the high-pressure air pipe; the rotating cage motor is in driving connection with the rotating cage; the sand collecting hopper is arranged below the rotating cage; the sand suction head is arranged in the sand collecting hopper; the sand suction head is connected with the descaling nozzle; and the swinging mechanism is in driving connection with the descaling nozzle. According to the wet rotary cage sand blasting machine, dust is not generated during descaling and pollution is avoided; mortar is recycled under negative pressure, and the consumption is low; and the utilization rate of the nozzle is high, the descaling speed is high, and the surface quality of a descaled workpiece is good.

The invention discloses a boiler descaling agent and a preparation process thereof. The boiler descaling agent is prepared from, by weight, 30-40 parts of organic acid, 15-20 parts of ethanol, 5-10 parts of an organic solvent, 8-12 parts of 8-hydroxyquinoline, 2-6 parts of a corrosion inhibitor and 12-40 parts of deionized water. The preparation process comprises the steps that S1, 8-hydroxyquinoline is dissolved in an ethanol solution to obtain the ethanol solution of 8-hydroxyquinoline; S2, the organic acid, the organic solvent, the deionized water and the ethanol solution of 8-hydroxyquinoline are mixed, the corrosion inhibitor is added, and then a finished product solution is obtained; S3, the finished product solution is bottled and packaged to obtain the boiler descaling agent. The boiler descaling agent is high in descaling speed, good in descaling effect, convenient to use, wide in application range and capable of effectively removing scale, oil dirt and rust scale, protecting equipment after descaling and prolonging the service life of the equipment, the preparation process is simple, raw materials are easy to obtain, and cost is low.

The invention discloses a surface treatment technique for aluminum. The surface treatment technique is characterized by comprising the following steps that (1) degreasing treatment is conducted, and the aluminum is dipped in a degreasing agent for 10-20 min; (2) after degreasing is finished, the aluminum is placed into a solution composed of sodium fluoride, concentrated nitric acid and water and dipped for 5-8 min at the room temperature; (3) the aluminum is placed into a solution composed of concentrated sulfuric acid, sodium dichromate and water and dipped for 2-3 min at the room temperature; and (4) the aluminum is washed in cold water for 5-8 min, washed through distilled water for 3-5 min and then dried at the temperature of 50-60 DEG C. According to the surface treatment technique for the aluminum, the technique is simple, through strict technological parameter control, the oxide skin removal speed is high, the damage of part base bodies can be reduced, and removal is more thorough.

The invention provides a washing agent for removing scale of a cold-rolling acid-pickling regeneration set pipeline and a using method thereof. The washing agent is prepared from the following components in parts by weight: 40-60 parts of ammonium hydrogen fluoride, 5-25 parts of sodium fluoride, 10-30 parts of trichloroethylene, 20-40 parts of ethyl ether, 20-50 parts of nitric acid, 10-30 partsof polyvinylpyrrolidone K30, 5-25 parts of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid and 60-80 parts of water. The washing agent is suitably used for washing and removing scale of the cold-rolling acid-pickling regeneration set pipeline, is excellent in washing effect, relatively low in harm on human body, high in safety, low in pollution after being discharged, rapid in scale removing speed, high in scale removing efficiency and excellent in effect of washing iron salt scale and silicate scale, can replace hydrofluoric acid for use, and is capable of thoroughly washing the acid regeneration pipeline in 10 hours.

The invention relates to the technical field of oil casing washing, in particular to a rotational flowcleaner. The rotational flowcleaner comprises a turbine motor, a drive shaft assembly and a sprayer, the lower end of the turbine motor is connected to the drive shaft assembly, and the lower end of the drive shaft assembly is connected to the sprayer; the turbine motor comprises an upper contact, the outer wall of the lower portion of the upper contact is connected to an outer canister, the lower end of the outer canister is connected to a lower contact of the outer canister, the lower end of the lower contact of the outer canister is connected to the drive shaft assembly, the outer canister is internally provided with a core shaft, the upper end of the core shaft is provided with a stream guidance cone, a bearing bush is arranged between the core shaft and the outer canister, the lower portion of the bearing bush is provided with a guide wheel, the upper and lower ends of the guide wheel are connected to the bearing bush and the lower contact of the outer canister in an inserting mode respectively, the outer wall of the core shaft is sleeved with a turbine, the lower portion of the core shaft is provided with a flushing port, the flushing port is located at the lower portion of the turbine, and the lower end of the core shaft is connected to the drive shaft assembly through a lower contact of the core shaft. The rotational flowcleaner is simple in structure, during oil casing washing, an oil outlet pipe does not need lifting, the labor intensity is low, the required time is short, the cleaning speed is high, the cleaning effect is good, and the cost is low.

The invention discloses a precise water system descaling agent, which comprises the following components in percentage by weight: 13.3 to 16.8 percent of nicotinic acid, 8.0 to 10.3 percent of glacialacetic acid, 6.6 to 9.1 percent of ammonium bifluoride, 1.8 to 2.8 percent of sodium gluconate and the balance of water. The precise water system descaling agent does not corrode equipment, is odorless, high in descaling rate and high in descaling speed, and does not corrode a human body.

The present invention discloses a high-efficient and stable ultrasonic electrolytic descaling device. The high-efficient and stable ultrasonic electrolytic descaling device is characterized in that an electrolyte circulating inlet is arranged in each of the four walls of an electrolytic bath; a circulating outlet is arranged in the bottom of the electrolytic bath; a multi-stage centrifugal pump provides pressure for electrolyte; an ultrasonic generator is mounted at the center position of the electrolytic bath, and the ultrasonic generator is connected with a transducer and an oscilloscope; the oscilloscope is connected with electrode plates of a positive electrode and a negative electrode of an electrolysis power supply; a demountable vertical adsorption plate is arranged below the oscilloscope for dividing the electrolytic bath into a left chamber and a right chamber; a heater is arranged on the inner wall of the electrolytic bath; the transducer and the heater are separately controlled by a controller to heat the electrolyte in the electrolytic bath. The descaling device disclosed by the present invention can refresh streams in a descaling process; by utilizing ultrasonic high-frequency vibration and a heating function of the heater, water in a circulating system can be efficiently descaled; and the descaling process produces no pollution, and is high in efficiency and high in safety.

The invention discloses a treatment process for the surface of magnesium. The treatment process is characterized by comprising the following steps that 1, dipping degreasing treatment is conducted in a degreasing agent; 2, after degreasing is conducted, a part is put into a solution composed of sodium hydroxide and water and is washed in alkali liquor for 5-15 min; 3, the part is washed in cold water for 5-7 min and is dipped in a solution composed of chromium oxide, calcium nitrate and the water for 5-15 min; 4, the part is washed in cold water for 2-5 min and is dipped in a solution composed of chromium oxide, sodium phosphate and the water for 3-12 min; and 5, the part is washed in cold water for 2 min and then dried. According to the treatment process for the surface of the magnesium, the process is simple, the oxide skin removing speed can be high and part matrix damage can be reduced through strict process parameter control, and removing is more thorough.