Patents by Inventor Chunge Niu
Chunge Niu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9493399Abstract: The present invention relates to a multi-branched Mannich base corrosion inhibitor and the method for preparing thereof. The method comprises (1) adding 3˜7 moles ketone and 3˜7 moles aldehyde to reaction kettle, adjusting pH to 2˜6 with acid, controlling temperature to 20˜50° C. and stirring for 20˜30 mins; (2) adding 1 mole organic polyamine to the reaction kettle under stirring, or adding the pH-adjusted ketone, aldehyde and organic solvent to organic polyamine, controlling temperature to 60˜90° C. and reacting for 1˜3 hrs, and after completion of the reaction, heating the system to 110° C. under nitrogen to remove water; the organic polyamine is organic compound comprising three or more primary amine groups and/or secondary amine groups.Type: GrantFiled: April 27, 2012Date of Patent: November 15, 2016Assignee: PETROCHINA COMPANY LIMITEDInventors: Ling Ma, Lei Li, Xiangjun Kong, Malike Dilibai, Xinping Zhen, Chunge Niu, Shengjun Bai
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Patent number: 9399735Abstract: A mannich-base inhibitor for decalcification, a preparation method and application thereof are provided. The inhibitor comprises 10-80% mannich-base component calculated in the total weight percent of the inhibitor, while the rest is at least one compound selected from imidazoline inhibitor with molecular weight between 110 and 750, and alkynyloxy amine inhibitor. The mannich-base inhibitor component is prepared through mannich reaction with 1 mol organic polyamine containing three or more primary amine bases and/or secondary amine bases, 3-7 mol ketones, and 3-7 mol aldehydes. The inhibitor which can be effectively compounded and cooperated with oil demulsifying agent and oil decalcifying agent, have the advantages of stable property, strong absorbability, high film strength and film density with its inhibition rate exceeding 90%.Type: GrantFiled: April 27, 2012Date of Patent: July 26, 2016Assignee: PETROCHINA COMPANY LIMITEDInventors: Ling Ma, Lei Li, Xinping Zhen, Chunge Niu, Zhongting Ma, Xiangjun Kong, Shuyan Yu
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Publication number: 20140296575Abstract: The present invention relates to a multi-branched Mannich base corrosion inhibitor and the method for preparing thereof. The method comprises (1) adding 3˜7 moles ketone and 3˜7 moles aldehyde to reaction kettle, adjusting pH to 2˜6 with acid, controlling temperature to 20˜50° C. and stirring for 20˜30 mins; (2) adding 1 mole organic polyamine to the reaction kettle under stirring, or adding the pH-adjusted ketone, aldehyde and organic solvent to organic polyamine, controlling temperature to 60˜90° C. and reacting for 1˜3 hrs, and after completion of the reaction, heating the system to 110° C. under nitrogen to remove water; the organic polyamine is organic compound comprising three or more primary amine groups and/or secondary amine groups.Type: ApplicationFiled: April 27, 2012Publication date: October 2, 2014Applicant: PetroChina Company LimitedInventors: Ling Ma, Lei Li, Xiangjun Kong, Malike Dilibai, Xinping Zhen, Chunge Niu, Shengjun Bai
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Publication number: 20130256602Abstract: A mannich-base inhibitor for decalcification, a preparation method and application thereof are provided. The inhibitor comprises 10-80% mannich-base component calculated in the total weight percent of the inhibitor, while the rest is at least one compound selected from imidazoline inhibitor with molecular weight between 110 and 750, and alkynyloxy amine inhibitor. The mannich-base inhibitor component is prepared through mannich reaction with 1 mol organic polyamine containing three or more primary amine bases and/or secondary amine bases, 3-7 mol ketones, and 3-7 mol aldehydes. The inhibitor which can be effectively compounded and cooperated with oil demulsifying agent and oil decalcifying agent, have the advantages of stable property, strong absorbability, high film strength and film density with its inhibition rate exceeding 90%.Type: ApplicationFiled: April 27, 2012Publication date: October 3, 2013Applicant: PETROCHINA COMPANY LIMITEDInventors: Ling Ma, Lei Li, Xinping Zhen, Chunge Niu, Zhongting Ma, Xiangjun Kong, Shuyan Yu
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Patent number: 7455763Abstract: A recycling process for the demetalization of hydrocarbon oil comprises recycling the following steps: a demetalizing composition for hydrocarbon oil or an aqueous solution thereof is sufficiently mixed with hydrocarbon oil in a desired proportion, and the resultant mixture is subjected to a conventional electrically desalting process to obtain a demetalized hydrocarbon oil and an aqueous desalted solution containing the desalted metal salts; the aqueous desalted solution containing the metal salts is then sufficiently mixed with a precipitating agent in a desired proportion and is subjected to a displacement reaction, and an aqueous solution containing the demetalizing composition is recovered by separating out the residue of the metal salts produced in the displacement reaction, which is poorly soluble or insoluble in water, with a solid-liquid separator; and the recovered aqueous solution containing the demetalizing composition for hydrocarbon oil, which meets the requirements for metal ions in demetalizedType: GrantFiled: June 2, 2004Date of Patent: November 25, 2008Assignee: Karamay Jinshan Petrochemical Limited CompanyInventors: Lailong Luo, Chunge Niu, Shuyan Yu, Zhongting Ma, Xiangsheng Meng, Bo Ouyang, Yun Han
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Publication number: 20080237091Abstract: A recycling process for the demetalization of hydrocarbon oil comprises recycling the following steps: a demetalizing composition for hydrocarbon oil or an aqueous solution thereof is sufficiently mixed with hydrocarbon oil in a desired proportion, and the resultant mixture is subjected to a conventional electrically desalting process to obtain a demetalized hydrocarbon oil and an aqueous desalted solution containing the desalted metal salts; the aqueous desalted solution containing the metal salts is then sufficiently mixed with a precipitating agent in a desired proportion and is subjected to a displacement reaction, and an aqueous solution containing the demetalizing composition is recovered by separating out the residue of the metal salts produced in the displacement reaction, which is poorly soluble or insoluble in water, with a solid-liquid separator; and the recovered aqueous solution containing the demetalizing composition for hydrocarbon oil, which meets the requirements for metal ions in demetalizedType: ApplicationFiled: June 2, 2004Publication date: October 2, 2008Applicant: KARAMAY JINSHAN PETROCHEMICAL LIMITED COMPANYInventors: Lailong Luo, Chunge Niu, Shuyan Yu, Zhongting Ma, Xiangsheng Meng, Bo Ouyang, Yun Han
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Publication number: 20070062849Abstract: A recycling process for the demetalization of hydrocarbon oil comprises recycling the following steps: a demetalizing composition for hydrocarbon oil or an aqueous solution thereof is sufficiently mixed with hydrocarbon oil in a desired proportion, and the resultant mixture is subjected to a conventional electrically desalting process to obtain a demetalized hydrocarbon oil and an aqueous desalted solution containing the desalted metal salts; the aqueous desalted solution containing the metal salts is then sufficiently mixed with a precipitating agent in a desired proportion and is subjected to a displacement reaction, and an aqueous solution containing the demetalizing composition is recovered by separating out the residue of the metal salts produced in the displacement reaction, which is poorly soluble or insoluble in water, with a solid-liquid separator; and the recovered aqueous solution containing the demetalizing composition for hydrocarbon oil, which meets the requirements for metal ions in demetalizedType: ApplicationFiled: June 2, 2004Publication date: March 22, 2007Applicant: KARAMAY JINSHAN PETROCHEMICAL LIMITED COMPANYInventors: Lailong Luo, Chunge Niu, Shuyan Yu, Zhongting Ma, Xiangsheng Meng, Bo Ouyang, Yun Han