Technology and Ability
Chengda adheres to the innovative concept of "technology innovation leads development". In recent years, the number of newly applied patents and the number of authorized patents have continued to increase significantly. At present, it has more than 500 authorized patents, including more than 90 invention patents, covering chlor-alkali, soda ash, natural gas chemical industry, coal chemical industry, photothermal, new materials, new energy and other fields, and a number of patents have been popularized and applied.
Summary of Patents for Invention of China Chengda Engineering Co., Ltd.
No. | Patent Description | Type | Patent No. |
1 | A method for the recovery and treatment of waste gas from propylene oxide process | Patent for Invention | ZL202310238121.9 |
2 | An ammonia hot standby process and an ammonia converter | Patent for Invention | ZL202310122158.5 |
3 | A method for the treatment and utilization method of chlorination tail gas, and the treatment and utilization system | Patent for Invention | ZL202310023934.6 |
4 | A peak shaving power generation system and method for fixed-load boiler operation using molten salt for heat storage | Patent for Invention | ZL202211376787.2 |
5 | A palladium catalyst recycling method and recycling system for succinic acid production | Patent for Invention | ZL202211239592.3 |
6 | A vertical radial flow reactor | Patent for Invention | ZL202210964865.4 |
7 | A device for online adjustment of the height of the quench water ring | Patent for Invention | ZL202210937175.X |
8 | An integrated process for the formation and installation of an internally expanded bell mouth of a guide pipe | Patent for Invention | ZL202210560370.5 |
9 | A method and system for the synthesis of succinic acid by ethylene glycol dicarbonylation | Patent for Invention | ZL202210527461.9 |
10 | A method for the production of syngas by autothermal reforming of natural gas with partial oxidation and carbon dioxide | Patent for Invention | ZL202210517879.1 |
11 | A method for the direct preparation of methanol from pure / rich carbon dioxide and hydrogen | Patent for Invention | ZL202210433636.X |
12 | A fully automatic feeding device and an automatic control system for wet-process acetylene generator | Patent for Invention | ZL202210360593.7 |
13 | A vacuum distillation system and method for mixed aromatics used in the production of durene | Patent for Invention | ZL202210337929.8 |
14 | A method for synthesis of succinic acid by oxidation of succinic aldehyde | Patent for Invention | ZL202210277900.5 |
15 | A structure and method for repairing leaks in the outer tank of a bimetallic storage tank | Patent for Invention | ZL202111433092.9 |
16 | A three-column differential pressure thermal coupling distillation method for the separation of methanol, dimethyl carbonate and phenol | Patent for Invention | ZL202111432554.5 |
17 | A method for recovering the heat of a cumene plant | Patent for Invention | ZL202111432518.9 |
18 | An automatic coke cleaning mechanism for furnace body | Patent for Invention | ZL202111127137.X |
19 | A method for synthesis of butanedial from acetylene dihydroformylation | Patent for Invention | ZL202111113922.X |
20 | Structure and test method of hydraulic test for jacketed pipes | Patent for Invention | ZL202110900151.2 |
21 | A catalyst system for the hydroformylation of acrolein to synthesize butanedial | Patent for Invention | ZL202110735101.3 |
22 | A process for synthesizing butanal by hydroformylation of acrolein | Patent for Invention | ZL202110735025.6 |
23 | A fluidized bed system for the production of vinyl chloride by acetylene method | Patent for Invention | ZL202110727880.2 |
24 | Production plant and method for producing liquid urea for vehicles and urea solution for denitration | Patent for Invention | ZL202110710991.2 |
25 | A method for producing bleaching powder concentrate by using wet-process acetylene waste calcium carbide slurry | Patent for Invention | ZL202110566608.0 |
26 | An automatic continuous production system and method for calcium based bleaching powder chlorination unit | Patent for Invention | ZL202110565041.5 |
27 | A secondary protective box and secondary protection method for electrical equipment | Patent for Invention | ZL202110440601.4 |
28 | A metal octagonal gasket and its design method | Patent for Invention | ZL202110392878.4 |
29 | An intelligent modular box for natural gas valve group | Patent for Invention | ZL202110312232.0 |
30 | A system and method for producing succinic acid and PBS from natural gas | Patent for Invention | ZL202011494949.3 |
31 | A system and method for producing succinic acid and PBS using coal and by-product coal gas | Patent for Invention | ZL202011494931.3 |
32 | A vertical radial flow reactor | Patent for Invention | ZL202011415148.3 |
33 | A system and method for recovering chlorine gas from waste mother liquor of bleaching powder concentrate | Patent for Invention | ZL202011392820.1 |
34 | An automatic packaging and transfer system applicable to bleaching powder concentrate | Patent for Invention | ZL202011392468.1 |
35 | A balance system with a spherical tank outlet set at the upper pole | Patent for Invention | ZL202011332995.3 |
36 | A technology and unit for treating HCl - containing gas and simultaneously by - producing high - concentration hydrochloric acid | Patent for Invention | ZL202011317020.3 |
37 | A rapid installation method for horizontal furnace tubes | Patent for Invention | ZL202011236772.7 |
38 | A water seal system for blocking the propagation of gas pressure fluctuations | Patent for Invention | ZL202011226553.0 |
39 | Drying system and method for acetylene based vinyl chloride feed gas | Patent for Invention | ZL202010801386.1 |
40 | A method and unit for condensing crude vinyl chloride | Patent for Invention | ZL202010403363.5 |
41 | A dual thermal corner protection structure and a cryogenic storage tank | Patent for Invention | ZL202010381058.0 |
42 | An application of a method and unit for hydrogen chloride absorption and treatment | Patent for Invention | ZL202010362365.4 |
43 | A safe calcium carbide conveying and buffering system for ultra-high structures | Patent for Invention | ZL202010244475.0 |
44 | Internal and external piping stress compensation structure and method of high-temperature molten salt tank | Patent for Invention | ZL202010236390.8 |
45 | A coal blending, weighing, screening and crushing system in an air - supported membrane coal yard | Patent for Invention | ZL202010234036.1 |
46 | The tail gas treatment system for acetylene-containing calcium carbide slag in dry-process acetylene production from calcium carbide process | Patent for Invention | ZL201911352474.1 |
47 | A low pressure drop fluid medium distribution device | Patent for Invention | ZL201911271095.X |
48 | A carbon black water waste gas treatment system and the carbon black removal system applied thereby | Patent for Invention | ZL201911192044.8 |
49 | A value-added urea production system containing ammonium sulfate and its production method | Patent for Invention | ZL201911188877.7 |
50 | A new type of BYD waste catalyst treatment system | Patent for Invention | ZL201911172743.6 |
51 | A medium pressure nitric acid production process and its production equipment | Patent for Invention | ZL201910849952.3 |
52 | A heat transfer oil skid mounted recovery system and a heat transfer oil recovery method | Patent for Invention | ZL201910806248.X |
53 | A coal-to-oil residue treatment process and treatment unit | Patent for Invention | ZL201910457359.4 |
54 | A kind of purification process and unit of yellow phosphorus tail gas | Patent for Invention | ZL201811518104.6 |
55 | Wet acetylene carbide slag treatment process | Patent for Invention | ZL201811427940.3 |
56 | A kind of unit and process for converting multi-component complex organic sulfur in crude syngas into hydrogen sulfide | Patent for Invention | ZL201811129439.9 |
57 | A kind of unit and method for prolonging the operation cycle of mother liquor distillation column of soda ash production | Patent for Invention | ZL201810853135.0 |
58 | A hydrocarbon steam reforming unit with pre-reforming and using high temperature primary reforming gas to pre-heat mixed gas, and its reforming process | Patent for Invention | ZL201810820508.4 |
59 | A kind of online elimination unit and method for SCR urea method denitration spray nozzle crystallization | Patent for Invention | ZL201810671005.5 |
60 | A kind of low chlorine photothermal molten salt production process and production unit | Patent for Invention | ZL201810418359.9 |
61 | A kind of synthesis gas preparation system and preparation process | Patent for Invention | ZL201810207693.X |
62 | A kind of coal chemical industry shift conversion acid condensate ammonia extraction system and ammonia extraction process | Patent for Invention | ZL201810175058.8 |
63 | Safety & environmental protection treatment system and treatment process of calcium carbide slag in cement production and storage | Patent for Invention | ZL201810165558.3 |
64 | A kind of sealing method of vacuum compressor in acetylene production from natural gas | Patent for Invention | ZL201711422220.3 |
65 | A kind of method for succinic acid synthesis by catalytic hydrogenation of acetylene double carbonylation product | Patent for Invention | ZL201711041529.8 |
66 | A kind of preparation method of double carbonylation of acetylene catalyzed by palladium | Patent for Invention | ZL201711036623.4 |
67 | A double-layer jacketed high temperature molten salt storage tank | Patent for Invention | ZL201710776816.7 |
68 | A kind of coal gasification black water flash steam utilization process | Patent for Invention | ZL201710363418.2 |
69 | Stress analysis method for inlet and outlet pipes of intermediate heat exchangers in large methanol plants | Patent for Invention | ZL201610823611.5 |
70 | Recovery unit and recovery method for purge gas containing acetylene of BDO plant | Patent for Invention | ZL201610762897.0 |
71 | Method for producing granular polysilicon by silane moving bed stacking method | Patent for Invention | ZL201610159426.0 |
72 | A mother liquor deammoniation process and equipment used for soda ash production by hot process | Patent for Invention | ZL201510599474.7 |
73 | A new process for purification of C4 hydrocarbon fluids | Patent for Invention | ZL201510580729.5 |
74 | Shaft seal structure of centrifugal coal slurry pumps | Patent for Invention | ZL201410671156.2 |
75 | A device and process to separate mixed gases containing NH3 and CO2 | Patent for Invention | ZL201410382834.3 |
76 | An ammonia and carbon separation unit and process | Patent for Invention | ZL201410382748.2 |
77 | A unit and process using multi-stage non-balanced absorption method to separate NH3 and CO2 mixed gas | Patent for Invention | ZL201410382629.7 |
78 | Automatic loading system and loading method of leak-proof loading arms for liquid chlorine tank trucks | Patent for Invention | ZL201410173352.7 |
79 | Packing shaft seal structure used for HP reciprocating pumps | Patent for Invention | ZL201410026553.4 |
80 | A soda ash production method by supplementing CO2 to flue gas | Patent for Invention | ZL201310579696.3 |
81 | Dichloroprene preparation method and preparation unit from dichlorobutylene | Patent for Invention | ZL201310443761.X |
82 | An investment-saving ammonia synthesis process and unit | Patent for Invention | ZL201310290488.1 |
83 | A composite catalyst used to prepare trichlorosilane by catalytic hydrogenation of silicon tetrachloride | Patent for Invention | ZL201210546845.1 |
84 | A high-efficiency gas-liquid phase mercury recovery and totally enclosed hydrochloric acid circulating process for acetylene-based VCM plants | Patent for Invention | ZL201110451109.3 |
85 | A urea ammonium nitrate solution preparation method | Patent for Invention | ZL201110428540.6 |
86 | A flexible thin tube sheet type reformed gas waste heat boiler | Patent for Invention | ZL201110058830.6 |
87 | Anti-sand and dust removal technology for cooling towers | Patent for Invention | ZL200810021889.6 |
88 | A method for treating wastewater from the production of 1, 4-butanediol | Patent for Invention | ZL200710077937.9 |
89 | Cleaning process for external-cooling shift gas soda ash preparation | Patent for Invention | ZL200710050017.8 |
90 | Separation method of dimethyl ether products in the production of synthetic dimethyl ether | Patent for Invention | 011073012 |
91 | Method for melamine preparation by gas-phase one-step process | Patent for Invention | 941119564 |
92 | Ammonium phosphate concentrator | Patent for Invention | 921080182 |
93 | Natural circulation external cooling carbonation tower | Patent for Invention | 871030055 |
94 | High starting torque electronic variable resistance squirrel-cage motor | Patent for Invention | 861059506 |
China Chengda Engineering Co., Ltd. maintains 376 valid utility model patents (omitted)