Unlock instant, AI-driven research and patent intelligence for your innovation.
Desulfurization method for desorbed waste gas of desulfurization liquid regeneration tank
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
The technology of desulfurization liquid and regeneration tank is applied in the field of desulfurization of waste gas analysis of desulfurization liquid regeneration tank, which can solve the problems of not meeting environmental protection requirements and polluting the environment.
Pending Publication Date: 2021-04-30
ANHUI JINGHE IND
View PDF7 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the processing capacity of the long-running regeneration tank cannot meet the requirements of environmental protection, and the analysis gas contains 13-18mg / L H 2 The problem of direct discharge of S gas to pollute the environment is to provide a desulfurization method for desulfurization of desulfurization liquid regeneration tank to analyze waste gas
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0020] (1) Desulfurization solution (PH: 8.0, Na 2 CO 3 : 8g / L, NaHCO 3 : 60g / L, total alkalinity: 0.8 gram equivalent / liter, 888 catalyst 5mg / L) sprayed from the spray device on the upper part of the vent pipe, and the analytical gas (CO2) from the lower part of the vent pipe 2 43.6%, O 2 8.4%, CO 4.2%, N 2 42.6%, CH 4 1.2%, H 2 S 15mg / L) for reverse contact to analyze the H in the gas 2 S gas is absorbed by the desulfurization liquid and reacts (see the reaction equation below);
[0021] (2) The absorbed gas (CO 2 :43%, O 2 :8.2%, CO: 4.2%, N 2 :43.2%, CH 4 :1.4%, H 2 S: 5mg / L) is directly discharged from the upper part of the vent pipe, and the desulfurization liquid enters the liquid contact device from the lower part of the vent pipe, and then is recycled to the regeneration tank for solution regeneration.
[0022]
Embodiment 2
[0024] (1) The desulfurization solution (PH: 8.2, Na 2 CO 3 : 9g / L, NaHCO 3 : 65 g / L, total alkalinity: 0.9 gram equivalent / liter, 888 catalyst 6 mg / L) sprayed from the spray device at the upper part of the vent pipe, and the analytical gas (CO2) from the lower part of the vent pipe 2 :48%, O 2 : 10%, CO: 4.4%, N 2 :36%, CH 4 :1.6%, H 2 S: 14.5mg / L) for reverse contact to analyze the H in the gas 2 S gas is absorbed by the desulfurization liquid and reacts;
[0025] (2) The absorbed gas (CO 2 :46%, O 2 : 10.5%, CO: 4.5%, N 2 :37.4%, CH 4 :1.6%, H 2 S: 4.5mg / L) is directly discharged from the upper part of the vent pipe, and the desulfurization liquid enters the liquid contact device from the lower part of the vent pipe, and then is recycled to the regeneration tank for solution regeneration.
Embodiment 3
[0027] (1) Desulfurization solution (PH: 8.3, Na 2 CO 3 : 10g / L, NaHCO 3 : 70 g / L, total alkalinity: 1.0 g equivalent / L, 888 catalyst 10 mg / L) is sprayed from the spray device at the upper part of the vent pipe, and the analytical gas (CO2) from the lower part of the vent pipe 2 :42%, O 2 :8.5%, CO: 2.7%, N 2 :45%, CH 4 :1.8%, H 2 S: 17.5mg / L) for reverse contact to analyze the H in the gas 2 S gas is absorbed by the desulfurization liquid and reacts;
[0028] (2) The absorbed gas (CO 2 :41%, O 2 : 10.2%, CO: 2.6%, N 2 :44.4%, CH 4 :1.8%, H 2 S: 4mg / L) is directly discharged from the upper part of the vent pipe, and the desulfurization liquid enters the liquid contact device from the lower part of the vent pipe, and then is recycled to the regeneration tank for solution regeneration.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention discloses a desulfurization method for desorbed waste gas of a desulfurization liquid regeneration tank. The desulfurization method is characterized in that the diameter of a blow-down pipe at the top of an original regeneration tank is increased by 2-5 times, a spraying device is arranged on the upper portion of the blow-down pipe, and a funnel-shaped liquid receiving device is arranged under the blow-down pipe. The method comprises the following steps: (1) spraying desulfurization liquid from a spraying device at the upper part of a blow-down pipe, carrying out reverse contact with desorbed gas from the lower part of the blow-down pipe, and absorbing H2S gas in the desorbed gas by the desulfurization liquid to react; and (2) directly discharging the absorbed gas from the upper part of the blow-down pipe, enabling the desulfurization liquid to enter a liquid receiving device from the lower part of the blow-down pipe, and then recycling the desulfurization liquid into a regeneration tank for solution regeneration. The method has the beneficial effects that under the condition that an existing device is not replaced, an emptying pipe is thickened, the desulfurization device and the receiving device are additionally arranged, the problem that the H2S content in the desorbed gas exceeds the standard can be solved, the H2S content in the desulfurized desorbed gas is as low as 5 mg / L H2S, and the desulfurized desorbed gas can be directly exhausted into air; and the desulfurization liquid subjected to absorption can be reused after being recycled.
Description
technical field [0001] The invention belongs to the technical field of synthetic ammonia production and relates to a desulfurization method for analyzing waste gas in a desulfurization liquid regeneration tank. Background technique [0002] In the existing synthetic ammonia production process, there is a desulfurization liquid regeneration tank in the shift gas desulfurization section to analyze the gas (containing 13-18mg / LH 2 S gas), the current shift gas desulfurization device in production has been in operation for a long time (nearly seven years), and the desulfurization liquid regeneration tank matched with it has not met the current environmental protection requirements, resulting in heavy H around the regeneration tank 2 S odor not only causes serious environmental impact, but also may cause harm to the health of operators, and because the acid gas in the vented air is corrosive, there is a certain safety hazard to the safe operation of the equipment. Contents of t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More