11 results about "Pickling Agents" patented technology

The utility model discloses an oil-rich coal in-situ pyrolysis well wall decontamination device, which relates to the field of geological exploration and development and comprises a ground support system, an in-well auxiliary support mechanism and automatic control equipment. The in-well auxiliary supporting mechanism comprises a dirt separator rod, a power assisting cylinder, a connecting point, an upper supporting rod, a scraping plate, a lower supporting rod, a heater and a scraping and brushing cylinder, the dirt separator rod is arranged at the bottom of the derrick, the power assisting cylinder and the scraping and brushing cylinder are arranged outside the dirt separator rod, and a cable and a water pipe of the heater are both arranged in the dirt separator rod; the scraping and brushing cylinder is located below the power assisting cylinder, a plurality of upper supporting rods are arranged outside the power assisting cylinder, the dirt removing device solves the problem that oil dirt is attached to the wall in a mechanical dirt removing mode, no pickling agent is added, no new pollution is added, water vapor is sprayed to the two sides of the scraping plate through vapor spraying openings, the oil dirt on the well wall is activated, the fluidity of the oil dirt is improved, and the removing difficulty is reduced.

The invention belongs to the technical field of metal cleaning, and particularly relates to a metal pickling agent and a preparation method and application thereof. The metal pickling agent comprises an acid solution, a corrosion inhibitor, a surfactant, an antioxidant and a complexing agent. According to the metal pickling agent, a complete oxidation film can be formed on the surface of a copper material during pickling, the copper material cannot be corroded and discolored under the condition that the surface of the copper material is acid for 30 min, and the requirement of automatic production can be met. After pickling treatment with a metal pickling agent and rinsing cleaning, a formed oxidation film uniformly covers the surface of a workpiece, the texture form is uniform, it can be ensured that the copper material is not corroded or discolored after being naturally stored for at least 3 days, and good oxidation resistance is achieved. Meanwhile, the uniform oxidation film can provide certain lubricity and reduce friction force, the subsequent extrusion or drawing process is facilitated, cracks and mottles are prevented from being generated on the surface of a product, and it is ensured that the workpiece cannot be corroded and discolored before extrusion or drawing.

The invention relates to the technical field of metal surface treatment, in particular to an environment-friendly pickling passivation paste spraying preparation. The cleaning agent comprises the following components in percentage by weight: 10%-30% of an environment-friendly pickling agent, 5%-20% of a composite passivating agent, 2%-10% of a thixotropic thickening system, 0.5%-4% of a surfactant, 0.2%-3% of a corrosion inhibitor, 1%-8% of a coalescing agent and the balance of deionized water, wherein the thixotropic thickening system is formed by compounding an organic thickening agent and an inorganic rheological additive according to the weight ratio of (1: 1)-(4: 1), the environment-friendly pickling agent is used for replacing strong-corrosivity inorganic acid, the rheological characteristic that the viscosity is rapidly recovered after spraying is achieved in combination with the thixotropic thickening system, the environment-friendly requirement is met, and the mechanical spraying technology is also adapted; the method has the advantages of avoiding environmental pollution and improving the construction efficiency and the passivation film quality.

The invention relates to the technical field of boiler cleaning and discloses a boiler chemical cleaning and maintaining device and a using method thereof.The boiler chemical cleaning and maintaining device comprises a boiler and a control valve II communicating with the boiler through a pipeline, the control valve II communicates with a water pump I through a pipeline, and the water pump I communicates with a three-way valve through a pipeline; the three-way valve is respectively communicated with the saline water tank and the pickling agent tank through pipelines, and water scale in the boiler is softened by saline water, so that the cleaning effect of the pickling agent is enhanced. According to the equipment, the strength and compactness of scale are greatly reduced through dual pretreatment of salt water softening pretreatment and penetrating agent deep permeation, salt water enables crystal lattices of the scale to be relaxed through osmotic pressure and ion exchange, the penetrating agent penetrates into a scale layer through micro cracks generated by temperature difference circulation and negative pressure suction, and optimal reaction conditions are created for follow-up acid pickling.

According to the technical scheme, the metal surface pickling agent production quality inspection sampling device comprises an equipment table and a sampling box, the sampling box is installed at the top of the equipment table, a rotating seat is installed at the position, located at the bottom in the sampling box, of the top of the equipment table, and a collecting tank is clamped to the position, close to the outer surface, of the top of the rotating seat through a clamping groove. A waste tank is clamped in a gap of the collecting tank at the top of the rotating seat through a clamping groove, a graduator is mounted at the bottom of the equipment table at the bottom of the rotating seat, an electric expansion piece is mounted on one side of the top of the sampling box, and a connecting plate is mounted on an output shaft of the electric expansion piece. The sampling device for the production quality inspection of the metal surface pickling agent solves the problems that the existing sampling equipment for pickling agent quality inspection cannot clean the residual pickling agent in a sampling tube during continuous sampling, and the residual pickling agent easily affects the quality inspection accuracy of the pickling agent, and improves the sampling purity of the pickling agent; therefore, the quality inspection accuracy of the pickling agent is ensured.

The invention discloses a cleaning agent and a cleaning method for a water-cooled electromagnet of a particle accelerator, and belongs to the technical field of maintenance and treatment of water-cooled electromagnets. The cleaning agent comprises a special pickling agent and a special passivating agent; the special pickling agent is prepared from components in percentage by mass as follows: 0.1%-0.5% of a nitric acid pickling corrosion inhibitor, 3%-4% of sulfamic acid, 0.1%-0.8% of sodium fluoride, 0.001%-0.003% of a surfactant, 0.5%-2.5% of citric acid and the balance of water, the special passivating agent is prepared from the following components in percentage by mass: 0.02 to 0.1 percent of acetoxime, 0.03 to 0.1 percent of benzotriazole, 0.001 to 0.003 percent of a de-foaming agent and the balance of water. The particle accelerator water-cooled electromagnet cleaned by the cleaning agent provided by the invention and a specific cleaning method meets the use requirements, reaches an ideal level, and can ensure normal operation of the accelerator.

The invention discloses a method for preparing lithium carbonate by extracting lithium from oil and gas field produced water, which comprises the following steps: pretreating oil and gas field produced water, and precipitating, filtering and concentrating the pretreated oil and gas field produced water to obtain concentrated oil and gas field produced water; extracting the concentrated oil and gas field produced water and the saponified organic phase to obtain a lithium-loaded organic phase and a raffinate water phase; carrying out acid pickling on the lithium-loaded organic phase and an acid pickling agent to obtain an acid-pickled organic phase and an impurity-containing aqueous solution; the acid pickling organic phase and a back extraction agent are subjected to back extraction, and a lithium-rich solution and a back extraction organic phase are obtained; and precipitating, filtering and drying the lithium-rich solution to obtain lithium carbonate. The method for preparing the lithium carbonate by extracting the lithium from the oil and gas field produced water is suitable for preparing the lithium carbonate by directly extracting the lithium from the oil and gas field produced water which is high in magnesium content, low in lithium content, high in mineralization degree and high in oil content.

The utility model discloses a pickling device for steel, including base, the top of base is installed with pickling tank, the one side of pickling tank forms the bottom groove of downward extension, the bottom of bottom groove is installed with the oscillator, the one side of bottom groove is provided with the storage box for depositing pickling agent, the bottom of one side of storage box is provided with the liquid outlet pipe, the top of storage box is provided with the cover, and the top one side of storage box has the storage groove. The utility model provides a pickling device for steel, and pickling tank is supported through setting base, and the bottom groove of pickling tank one side extension cooperates oscillator, prevents the impurity after cleaning from adhering again on steel, and storage box is used for depositing pickling agent in bulk, and the liquid outlet pipe is convenient for pickling agent and is guided into pickling tank, realizes the convenient supply of pickling agent, and the cover can reduce the volatilization or pollution of pickling agent in storage box, and the storage groove can be used for placing the tool or small -size accessories required for pickling, and the operation convenience is improved.

The invention discloses a composite pickling agent and a method for pickling salted preserved eggs at a constant temperature, and relates to the field of food processing, the composite pickling agent is prepared from the following raw materials in parts by weight: 1.5-2.5 parts of dietary alkali, 18-22 parts of edible salt, 90-110 parts of water and 0.5-5 parts of optional five spices, according to the composite pickling agent and the method for pickling the salted preserved eggs at the constant temperature by using the composite pickling agent, the pickling period of more than 30 days in the traditional process is shortened to 8-15 days through the cooperation of a specific alkali-salt ratio and a constant-temperature condition, so that the production efficiency is greatly improved.

The invention discloses a compound bacteria fermented fruit and vegetable marinade and a preparation method thereof, and particularly relates to the technical field of fermentation engineering. The method comprises the following steps: firstly, adding a proper amount of water into raw materials rich in fermentable sugar, sulfur-containing flavored vegetables and prebiotic sources, and beating into paste to serve as fruit and vegetable-based bottom mud; inoculating lactic acid bacteria and saccharomycetes which are subjected to induction culture into the fruit and vegetable-based bottom mud, and performing aerobic fermentation and anaerobic fermentation to obtain a fermentation product; finally, adding common food additives into a fermentation product, performing low-temperature refrigeration and after-ripening, performing heat treatment at 85-95 DEG C for 15-30 seconds, killing viable bacteria, and stopping fermentation; and cooling to room temperature to obtain the compound bacteria fermented fruit and vegetable marinade. According to the method disclosed by the invention, lactic acid bacteria (lactobacillus plantarum and lactobacillus fermentum) and saccharomycetes (Wickerhamomyces anomalus) are subjected to induced culture respectively, so that the lactic acid bacteria and the saccharomycetes are subjected to adaptive pre-domestication based on interaction signals, and the ecological compatibility and metabolism synergistic efficiency of the lactic acid bacteria and the saccharomycetes in a co-fermentation system are remarkably improved.