Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A low-cost, new process technology, applied in the field of liquid-phase oxidation denitrification process, can solve the problem of high cost of denitrification process, achieve the effects of good absorption effect, easy industrialization implementation, and simple process flow
Active Publication Date: 2013-07-10
陈洪会 +2
View PDF1 Cites 7 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
[0005] Aiming at the problem of high cost of denitrification process in the prior art, the present invention provides a new low-cost flue gas oxidation denitrification process, using cheap lime water and
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
[0034] A new low-cost oxidation denitrification process, the specific steps are as follows:
[0035] A Prepare calcium chlorate solution
[0036] Using lime water and chlorine gas as raw materials, prepare an aqueous solution with a chlorate ion concentration of 50 g / L;
[0037] B Oxidation section
[0038] In the oxidation section, after diluting the prepared aqueous solution, it is sprayed into the oxidation tower from the upper part of the oxidation tower as an oxidant, and countercurrently contacts with the flue gas entering from the lower part, so that the nitrogen oxides in the flue gas are oxidized;
[0039] C absorption section
[0040] In the absorption section, lye is used as the absorbent to spray into the absorption tower from the upper part of the absorption tower to absorb the nitrogen oxides in the oxidized flue gas, generate corresponding nitrite and dissolve in water, so as to achieve the purpose of denitrification.
Embodiment 2
[0042] This embodiment is basically the same as Embodiment 1, on this basis:
[0043] The chlorate ion concentration of described A step is 100g / L.
[0044] After the aqueous solution of described B step is diluted, chlorate ion concentration is 5g / L.
Embodiment 3
[0046] This embodiment is basically the same as Embodiment 1, on this basis:
[0047] The chlorate ion concentration of described A step is 200g / L.
[0048] After the aqueous solution of described B step is diluted, chlorate ion concentration is 50g / L.
[0049] The lye in the C step is lime water with a mass concentration of 0.01%.
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
Property
Measurement
Unit
Diameter
aaaaa
aaaaa
Diameter
aaaaa
aaaaa
Diameter
aaaaa
aaaaa
Login to view more
Abstract
The invention provides a new low-cost oxidation denitrating technology aiming at the problem that the denitrating technology in the prior art is high in cost. The new low-cost oxidation denitrating technology comprises the specific steps as follows: A) preparing aqueous solution with chlorate ion concentration of 50-500g/L by taking lime water and chlorine as raw materials; B) in oxidation section, diluting the prepared aqueous solution to serve as an oxidant, and spraying into the oxidation section from the upper part, so as to contact with smoke entering from the lower part reversely and enable nitric oxide in the smoke to have oxidation reaction; and C) in an absorption section, spraying alkali liquor as an absorbent into the absorption section from the upper part to absorb the oxidized nitric oxide in the smoke to produce corresponding nitrite dissolved in water, thereby achieving the denitration purpose. The new low-cost oxidation denitrating technology has the advantages of being simple in technological flow, low in operation cost and the like.
Description
technical field [0001] The invention relates to a liquid-phase oxidation and denitrification process, in particular to a new low-cost flue gas oxidation and denitrification process. Background technique [0002] Flue gas desulfurization and denitrification are used to control coal combustion product SO 2 One of the important methods of NOx and NOx, based on the current situation of the wide application of wet flue gas desulfurization technology in my country, the development of wet synergistic denitrification technology combined with wet desulfurization has broad industrial application prospects. Since 95% of NOx in the flue gas exists in the form of NO with low solubility, the NO is first oxidized into easily absorbed NO before the wet absorption process. 2 At the same time, the oxidant should be cheap and easy to obtain, and the oxidation product can be recycled. These are the keys to the simultaneous wet desulfurization and denitrification technology. [0003] Among the...
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