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8871116 Hydrochloric acid washing of carbon and graphite for making conductive ink for ultracapacitors  
Water-based conductive ink compositions may include acid-washed graphite particles, carbon black particles, at least one polymeric dispersant, at least one acrylic binder, at least one...
8663584 Method and technique employing a novel extractant to enhance recovery of gold and palladium from hydrochloric acid media  
An extraction component enabling the concurrent recovery of gold and/or palladium selectively from a hydrochloric acid media containing the base metals and other contaminants. The disclosed...
8636880 Electrolysis cell for the conversion of cuprous chloride in hydrochloric acid to cupric chloride and hydrogen gas  
The present invention provides an electrochemical cell for producing hydrogen gas and cupric chloride, comprising an anode compartment including an anode disposed in an anolyte, wherein the anolyte...
8628740 Processing method for recovering iron oxide and hydrochloric acid  
A method of processing waste iron chloride solution including ferrous chloride, ferric chloride or mixtures thereof and optionally free hydrochloric acid, includes concentrating waste iron chloride...
8551299 Methods of producing hydrochloric acid from hydrogen gas and chlorine gas  
A method of producing HCl from H2 and Cl2 is provided. In some embodiments, the method comprises at least one photochemical chamber placed in fluid communication with at least one source of H2 and...
8481783 Process of separation of glyoxylic acid from an aqueous reaction medium containing glyoxylic acid and hydrochloric acid  
The invention relates to a process for separating glyoxylic acid starting from an aqueous reaction medium containing glyoxylic acid and hydrochloric acid, comprising a step of countercurrent steam...
8187975 Hydrochloric acid etch and low temperature epitaxy in a single chamber for raised source-drain fabrication  
A raised source-drain structure is formed using a process wherein a semiconductor structure is received in a process chamber that is adapted to support both an etching process and an epitaxial...
8163092 Method of concentrating hydrochloric acid  
A method for producing concentrated HCl vapor from an aqueous solution of HCl, including: (a) introducing an aqueous feed liquor to an evaporation chamber containing a mother liquor, the feed...
7820119 System and method of making ferric chloride with reduced amounts of hydrochloric acid for water treatment  
The present invention involves a system and method of making ferric chloride with reduced amounts of hydrochloric acid for water treatment. The method comprises preparing a reactant batch...
7731896 Low alloy steel and weld joint thereof excellent in corrosion resistance to hydrochloric acid and sulfuric acid  
The present invention provides a low alloy steel and a weld joint thereof excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, said low alloy steel...
7718014 Low alloy steel and weld joint thereof excellent in corrosion resistance to hydrochloric acid and sulfuric acid  
The present invention provides a low alloy steel and a weld joint thereof excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, said low alloy steel...
7563420 Method for recovering rhodium and silver from hydrochloric acid  
Object: This invention provides a method of refining an Rh-containing solution also containing at least one type of impurities of heavy metals, alkaline earth metals, and Ag. Means for solving the...
7482282 Use of dilute hydrochloric acid in advanced interconnect contact clean in nickel semiconductor technologies  
A method for cleaning oxide from the interconnects of a semiconductor that are comprised of nickel (Ni) silicide or nickel-silicide alloys where nickel is the primary metallic component is...
7128890 Purification of hydrochloric acid obtained as by-product in the synthesis of methanesulfonic acid  
Process for purifying the hydrochloric acid obtained as by-product in the synthesis of MSA, characterized in that the gaseous flow of hydrogen chloride evacuated from the top of the synthesis...
6923947 Method of making ferric chloride with reduced amounts of hydrochloric acid for water treatment  
The present invention involves a system and method of making ferric chloride with reduced amounts of hydrochloric acid for water treatment. The method comprises preparing a reactant batch...
6821384 Process for the treatment of fly ash, using hydrochloric acid  
The invention relates to a process for the treatment of fly ash accumulating in the electro-filter of the soda recovery unit in a sulfate cellulose mill, the ash containing primarily Na sulfate, Na...
6800203 Catalytic destruction of perchlorate in ferric chloride and hydrochloric acid solution with control of temperature, pressure and chemical reagents  
A method is described to decompose perchlorate in a FeCl3/HCl aqueous solution such as would be used to regenerate an anion exchange resin used to remove perchlorate. The solution is mixed with a...
6793905 Method for producing high-purity hydrochloric acid  
This invention relates to a novel method, which can be carried out according to industrial standards, for producing high-purity hydrochloric acid with a very low particle content, for use in the...
6676917 Process for the production of hydrochloric acid and neutralized sulfates  
A process for the production of hydrochloric acid and neutralized sulfates comprising: reacting sulfuric acid with an alkaline metal chloride in order to obtain a liquor containing hydrochloric...
6645191 Multi-chamber container with a concentrated glucose compartment and a concentrated hydrochloric acid compartment  
A multi-chamber renal dialysis container having at least two compartments and containing concentrated glucose in a first compartment and a hydrochloric acid solution containing electrolytes in a...
6596630 Method of cleaning a silicon substrate after blanket depositing a tungsten film by dipping in a solution of hydrofluoric acid, hydrochloric acid, and/or ammonium hydroxide  
A semiconductor device manufactured by cleaning without dissolving W, Ti, or TiN even if these metallic materials are exposed on the substrates to be cleaned, and a method for manufacturing such a...
6432815 METHOD OF CLEANING A SILICON SUBSTRATE AFTER BLANKET DEPOSITING A TUNGSTEN FILM BY DIPPING IN A SOLUTION HAVING HYDROFLUORIC ACID, HYDROCHLORIC ACID, AND/OR AMMONIUM HYDROXIDE PRIOR TO PATTERNING THE TUNGSTEN FILM  
A semiconductor device manufactured by cleaning without dissolving W, Ti, or TiN even if these metallic materials are exposed on the substrates to be cleaned, and a method for manufacturing such a...
6402930 Process for the electrolysis of technical-grade hydrochloric acid contaminated with organic substances using oxygen-consuming cathodes  
A process for electrolyzing an aqueous solution of hydrochloric acid to chlorine in an electrochemical cell provided with an anode compartment and a cathode compartment including at least one gas...
6391860 Method for preparation and use of paste formed by controlled reaction of sucralfate with hydrochloric acid  
Disclosed is a sucralfate composition which is employed in the treatment of lesions. The composition is formed by the reaction between sucralfate and hydrochloric acid prior to dosing under...
6390636 Hydrochloric acid solution for use as an activating treatment agent solution and method for using same  
A method for forming a metallic mirror surface on a receiving surface, substrate or article is shown. The method comprises the steps of cleaning the receiving surface to be coated with a metallic...
6365121 Method for producing hyperazeotropic hydrochloric acid from metal chloride solutions  
The invention relates to a process for the preparation of superazeotropic hydrochloric acid from metal chloride solutions, e.g. spent pickling solutions. The process is characterized in that the...
6290927 Method for the removal of unwanted color from hydrochloric acid  
A method of removing iron and halogen coloring materials from hydrochloric acid, by removing iron from the hydrochloric acid, and thereafter adding a nitrogen containing reducing agent to the...
6225502 Use of an aniline depleted in electron to release hydrochloric acid present in a reaction mixture and method for displacing, at least partially, an aniline from its chlorhydrate  
The invention concerns a method for displacing, at least partially, an aniline from its chlorhydrate, characterized in that said aniline is selected among anilines whereof the conjugate acid has a...
6214129 Cleaning method with hydrochloric acid-hydrogen peroxide mixture  
A cleaning method to inhibit the adhesion of micro particles to a member to be cleaned by decreasing an amount of generation of bubbles. In a method for cleaning a member to be cleaned by dipping...
6210650 Process for regenerating hydrochloric acid from pickling plants  
In order to reduce pollutants in the waste gas of regeneration plants for spent hydrochloric acid from pickling plants a process is provided, comprising the thermal decomposition of iron chloride...
6190635 Purification of the hydrochloric acid by-product of the synthesis of methanesulphonic acid  
In order to remove the methanesulphonyl chloride entrained by the gaseous HCl by-product, an amount of water ranging from 0.01 to 20%, relative to the mass of HCl to be treated, is injected into...
6165420 Production unit for producing high purity hydrochloric acid and using the same  
Disclosed is an apparatus for supplying hydrogen chloride gas from a hydrogen chloride gas generator to an absorbing reactor through a gas supply pipe, and a method for producing hydrochloric acid...
5945077 Separation of copper from chalcopyrite using hydrochloric acid  
A method of separating copper from chalcopyrite, including heating a mixture containing chalcopyrite particles containing copper components and hydrochloric acid at a temperature of at least 110° ...
5846510 Regeneration of hydrochloric acid  
A process for forming an aqueous chloride leachant from a spent aqueous chloride leach liquor which process comprises passing a spent aqueous chloride leach liquor and gases containing hydrogen...
5846387 On-site manufacture of ultra-high-purity hydrochloric acid for semiconductor processing  
Highly purified HCl for use in semiconductor manufacturing is prepared on-site by drawing HCl vapor from a liquid HCl reservoir, and scrubbing the filtered vapor in a low-pH aqueous scrubber.
5770035 Method for the electrolysis of aqueous solutions of hydrochloric acid  
The improved method for the production of chlorine from aqueous solutions of hydrochloric acid in a membrane electrolysis cell comprises a cathode compartment equipped with a gas diffusion cathode...
5766565 Purification of hydrochloric acid  
A process is described by which numerous waste or by-product aqueous hydrochloric acid streams can be purified by contacting the aqueous hydrochloric acid with activated carbon to remove silicon...
5756063 Process for manufacturing isocyanates and producing reagent grade hydrochloric acid therefrom  
Reagent grade hydrochloric acid having an iron content of less than 200 p.p.b. is made from an industrial organic isocyanate manufacturing process by removing hydrogen chloride from organic...
5670029 Process for the separation of a mixture of benzyl chloride, benzyl alcohol, dibenzyl ether and aqueous hydrochloric acid  
A process for the separation of a mixture which contains benzyl chloride, benzyl alcohol, dibenzyl ether and aqueous hydrochloric acid, wherein said mixture is continuously introduced via a...
5627144 Composition for enhanced crude oil recovery operations containing hydrochloric acid or hydrofluoric acid, or mixtures thereof with ester quaternary ammonium compounds or/and alkyl quaternary ammonium compounds  
Detergent compositions comprised of an alkyl polyglycoside and an ester quat corresponding to formula (II) ##STR1## wherein R2 CO is an aliphatic acyl radical containing 12 to 22 carbon atoms and...
5441929 Hydrochloric acid acidizing composition and method  
A hydrochloric acid acidizing composition for treating a subterranean formation penetrated by a well bore to increase the production of desired materials (e.g., hydrocarbons) therefrom that...
5436378 Drying of hydrocarbon/hydrochloric acid/water admixtures  
Water-containing mixtures of at least one hydrocarbon/halocarbon and hydrochloric acid, e.g., the methyl chloride feedstream in conventional process for the synthesis of chloromethanes, are...
5417955 Manufacture of ferric sulfate and hydrochloric acid from ferrous chloride  
A two step method of converting ferrous chloride from a pickling liquor to produce hydrochloric acid and ferric sulfate is disclosed. The ferrous chloride is first mixed with sulfuric acid to...
5384064 Hydrochloric acid pickling accelerator  
A hydrochloric acid pickling accelerator for batch and continuous hydrochloric acid pickling baths for all types of steel, comprising an admixture of from about 10 to about 15 percent by weight...
5330735 Purification of hydrochloric acid  
A process is described by which numerous waste or by-product aqueous hydrochloric acid streams can be purified by contacting the aqueous hydrochloric acid with a polystyrenic based resin to remove...
5316679 Elution of antimony from solid phases using concentrated sulfuric acid containing dilute hydrochloric acid  
A method for the removal of antimony ions from solid phases which have an affinity for antimony ions comprises contacting the antimony containing solid phase with an aqueous eluent solution...
5246682 Process for waste liquid-free processing of chlorosilane distillation residues with hydrochloric acid  
A process for waste liquid-free processing of residues of chlorosilane distillations, wherein the residue is allowed to react with liquid hydrochloric acid accompanied by the release of hydrogen...
5238500 Aqueous hydrofluoric and hydrochloric acid vapor processing of semiconductor wafers  
Disclosed are methods and apparatuses for combined etching and cleaning of semiconductor wafers and the like preferably using hydrofluoric acid (HF), hydrochloric acid (HCl) and water solutions...
5202106 Purification of hydrochloric acid with ferric chloride pretreated activated carbon  
The present invention relates to a process for the pretreatment of activated carbon, capable of being employed especially for the purification of concentrated solutions of hydrochloric acid.
5198121 Drying of hydrocarbon/hydrochloric acid/water admixtures  
Water-containing mixtures of at least one hydrocarbon/halocarbon and hydrochloric acid, e.g., the methyl chloride feedstream in conventional process for the synthesis of chloromethanes, are...
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