CN117065554A - Comprehensive control system of nitrogen and oxygen production equipment based on data acquisition - Google Patents
Comprehensive control system of nitrogen and oxygen production equipment based on data acquisition Download PDFInfo
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- CN117065554A CN117065554A CN202311086615.6A CN202311086615A CN117065554A CN 117065554 A CN117065554 A CN 117065554A CN 202311086615 A CN202311086615 A CN 202311086615A CN 117065554 A CN117065554 A CN 117065554A
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- nitrogen
- oxygen
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 378
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 189
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 187
- 239000001301 oxygen Substances 0.000 title claims abstract description 187
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 103
- 238000012216 screening Methods 0.000 claims description 173
- 239000012535 impurity Substances 0.000 claims description 137
- 239000002994 raw material Substances 0.000 claims description 101
- 238000001179 sorption measurement Methods 0.000 claims description 72
- 238000000926 separation method Methods 0.000 claims description 51
- 239000007789 gas Substances 0.000 claims description 50
- 239000003463 adsorbent Substances 0.000 claims description 47
- 238000000746 purification Methods 0.000 claims description 41
- 238000001514 detection method Methods 0.000 claims description 26
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 20
- 238000004806 packaging method and process Methods 0.000 claims description 19
- 239000002808 molecular sieve Substances 0.000 claims description 18
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 18
- 238000009423 ventilation Methods 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 239000013618 particulate matter Substances 0.000 claims description 6
- 238000007781 pre-processing Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000012858 packaging process Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 description 115
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- -1 particulate matters Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0051—Carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0062—Water
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0071—Sulfur oxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0098—Other impurities
Abstract
The application discloses a comprehensive management and control system of nitrogen and oxygen production equipment based on data acquisition, which belongs to the field of nitrogen and oxygen production and is used for solving the problems that consumable management is not convenient enough and process products are difficult to measure in a nitrogen and oxygen production process.
Description
Technical Field
The application belongs to the field of nitrogen and oxygen production, relates to a nitrogen and oxygen separation technology, and in particular relates to a comprehensive management and control system of nitrogen and oxygen production equipment based on data acquisition.
Background
Nitrogen is a simple substance formed by nitrogen element, is colorless and odorless gas at normal temperature and normal pressure, and occupies 4/5 of the large amount, namely more than 78% of the atmosphere, and almost can be used in an unlimited amount. The industry often uses a method for fractionating liquid air to obtain a large amount of nitrogen, and the method uses a high-molecular hollow fiber membrane to have different permeation rates on gas molecules such as nitrogen, oxygen and the like in the air, so that the nitrogen and the oxygen are separated, and the nitrogen and the oxygen are produced more efficiently and conveniently;
in the prior art, during the process of nitrogen and oxygen production, the work of distinguishing loss and consumable replenishment is still greatly dependent on manpower, the intelligent degree of consumable management is insufficient, the detection of the nitrogen concentration and the oxygen concentration in the product is carried out by conveying a detection sample to a professional detection mechanism, and manufacturers lack means for primarily detecting the nitrogen and oxygen concentration of the product, therefore, a comprehensive management and control system of nitrogen and oxygen production equipment based on data acquisition is provided.
Disclosure of Invention
Aiming at the defects existing in the prior art, the application aims to provide a comprehensive control system of nitrogen and oxygen production equipment based on data acquisition.
The technical problems to be solved by the application are as follows:
(1) The intelligent degree of consumable management in the process of preparing nitrogen and oxygen is insufficient;
(2) And how to perform preliminary determination on the nitrogen and oxygen concentration of the process product with high efficiency and convenience.
The aim of the application can be achieved by the following technical scheme:
a comprehensive control system of nitrogen and oxygen production equipment based on data acquisition comprises a raw material preparation module, a raw material purification module, a nitrogen and oxygen separation module, a separation detection module and a product packaging module;
the raw material preparation module is used for preprocessing the process raw materials and conveying the preprocessed process raw materials to the raw material purification module through the material conveying pipeline;
the raw material purification module is used for removing impurity gas in the process raw materials and conveying the process raw materials subjected to impurity purification to the nitrogen-oxygen separation module through the material conveying pipeline;
the nitrogen-oxygen separation module is used for screening the process raw materials for completing impurity purification into nitrogen and oxygen, and the screened nitrogen and the screened oxygen are obtained and conveyed to the separation detection module through different pipelines;
the separation detection module is used for detecting gas residues in the primary screening nitrogen sample and the primary screening oxygen sample, conveying the screening invalid products to the nitrogen-oxygen separation module, and conveying the screening valid products to the separation detection module through different pipelines;
the product packaging module is used for filling and packaging the primary screening nitrogen and the primary screening oxygen.
Further, the working process of the raw material preparation module is specifically as follows:
step A1: screening out solid impurities in the process raw materials;
step A2: collecting the real-time particle concentration of the process raw materials;
step A3: comparing the real-time state data of the process raw materials with the standard particle concentration;
if the real-time particle concentration is less than or equal to the standard particle concentration, judging that the process raw materials are pretreated;
and if the real-time particulate matter concentration is greater than the standard particulate matter concentration, returning to the step A1.
Further, the purification process of the raw material purification module is specifically as follows:
step B1: injecting the process raw materials into a gas purification pipeline, wherein the gas purification pipeline is connected with a plurality of impurity adsorption bins, and the impurity adsorption bins are filled with impurity adsorbents corresponding to the impurity gases;
step B2: the impurity adsorption bin is provided with ventilation valves at two sides, when process raw materials are injected into a gas purification pipeline, the ventilation valve at the gas inlet end of the impurity adsorption bin is opened, the ventilation valve at the gas outlet end is kept closed, impurity gas in the process raw materials is adsorbed in the impurity adsorption bin, the mass of an impurity adsorbent in the impurity adsorption bin is gradually increased along with the adsorption of the impurity gas, and when the mass of the impurity adsorbent is no longer increased, the impurity gas is completely adsorbed or the impurity adsorbent reaches the adsorption limit;
step B3: the bottom of the impurity adsorption bin is provided with a gravity sensor for detecting the mass of the impurity adsorbent, and when the mass of the impurity adsorbent is kept stable and lasts for a period of time, the mass of the impurity adsorbent is compared with the adsorption limit mass;
if the mass of the impurity adsorbent is smaller than the adsorption limit mass, carrying out the subsequent steps;
if the mass of the impurity adsorbent is equal to the adsorption limit mass, replacing the impurity adsorbent in the impurity adsorption bin and returning to the step B2;
step B4: opening an air outlet end ventilation valve of the impurity adsorption bin and the next impurity adsorption bin, and repeating the steps B2 and B3 until the process raw materials pass through all the impurity adsorption bins;
step B5: drying the process raw materials, measuring the water content of the dried process raw materials, and comparing the real-time water content with the standard water content;
if the real-time water content is less than or equal to the standard water content, judging that the process raw materials finish impurity purification;
and if the real-time water content is greater than the standard water content, repeating the step B5.
Further, the screening process of the nitrogen-oxygen separation module is specifically as follows:
injecting the process raw materials into a nitrogen-oxygen separation bin, wherein a molecular sieve is arranged in the nitrogen-oxygen separation bin; sieving the process raw materials through a molecular sieve, wherein the molecular size of oxygen molecules is smaller than the diameter of molecular sieve pore paths, the molecular size of oxygen molecules passes through molecular sieve pore paths, the molecular size of nitrogen molecules is larger than the diameter of molecular sieve pore paths, and nitrogen molecules do not pass through molecular sieve pore paths; screening to obtain primary screening nitrogen and primary screening oxygen.
Further, the detection process of the separation detection module is specifically as follows:
extracting a primary screening nitrogen sample and a primary screening oxygen sample, and measuring the oxygen concentration of the primary screening nitrogen and the nitrogen concentration of the primary screening oxygen;
comparing the oxygen concentration of the primary screening nitrogen with an oxygen concentration threshold;
if the value of the oxygen concentration is smaller than or equal to the first oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is a third product grade; if the value of the oxygen concentration is larger than the first oxygen concentration threshold value and smaller than or equal to the second oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is the second product grade; if the value of the oxygen concentration is larger than the second oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is the first product grade; wherein the values of the first oxygen concentration threshold and the second oxygen concentration threshold are both greater than zero, the first oxygen concentration threshold is less than the first oxygen concentration threshold, the grade of the first product grade is less than the grade of the second product grade, and the grade of the second product grade is less than the grade of the third product grade;
similarly, comparing the nitrogen concentration of the primary screening oxygen with a nitrogen concentration threshold;
if the value of the nitrogen concentration is smaller than or equal to the first nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is a third product grade; if the value of the nitrogen concentration is larger than the first nitrogen concentration threshold value and smaller than or equal to the second nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is the second product grade; if the value of the nitrogen concentration is larger than the second nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is the first product grade; wherein the first nitrogen concentration threshold and the second nitrogen concentration threshold are both greater than zero in value, the first nitrogen concentration threshold being less than the first nitrogen concentration threshold;
if the product grade of the primary screening nitrogen is the first product grade, marking the primary screening nitrogen as a screening invalid product; if the product grade of the primary screening nitrogen is the second product grade or the third product grade, marking the primary screening nitrogen as a screening effective product;
similarly, if the product grade of the primary screening oxygen is the first product grade, marking the primary screening oxygen as a screening ineffective product; if the product grade of the primary screening oxygen is the second product grade or the third product grade, the primary screening oxygen is marked as a screening effective product.
Further, the packaging process of the product packaging module is specifically as follows:
packaging the primary screening nitrogen and the primary screening oxygen with the product grade of the second product grade into an industrial nitrogen cylinder and an industrial oxygen cylinder respectively; packaging the primary screening nitrogen and the primary screening oxygen with the product grade of the third product grade into a high-purity nitrogen cylinder and a high-purity oxygen cylinder respectively;
wherein, the nitrogen purity of the high-purity nitrogen cylinder is higher than that of the industrial nitrogen cylinder, and the oxygen purity of the high-purity oxygen cylinder is higher than that of the industrial oxygen cylinder.
Compared with the prior art, the application has the beneficial effects that:
1. the application relates to a gas purification pipeline, which is connected with a plurality of impurity adsorption bins, wherein the impurity adsorption bins are filled with impurity adsorbents corresponding to impurity gases, the bottoms of the impurity adsorption bins are provided with gravity sensors for detecting the mass of the impurity adsorbents, and when the mass of the impurity adsorbents is equal to the adsorption limit mass, the impurity adsorbents in the impurity adsorption bins are replaced, so that the intelligent management of consumable materials in the nitrogen and oxygen production process is realized;
2. according to the application, firstly, a raw material preparation module is used for preprocessing the process raw material to remove solid impurities in the process raw material, then a raw material purification module is used for removing impurity gas in the process raw material, a nitrogen-oxygen separation module is used for screening a process raw material screen after impurity purification to obtain primary screening nitrogen and primary screening oxygen, a separation detection module is used for detecting gas residues in a primary screening nitrogen sample and a primary screening oxygen sample, the primary screening nitrogen and the primary screening oxygen are marked as screening invalid products and screening effective products, and a final product split-charging module is used for filling and packaging the screening effective products according to product grades.
Drawings
The present application is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is an overall system block diagram of the present application;
fig. 2 is a schematic diagram of the operation of the feedstock purification module of the present application.
Detailed Description
The technical solutions of the present application will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-2, a comprehensive control system of a nitrogen and oxygen generating device based on data acquisition includes a raw material preparation module, a raw material purification module, a nitrogen and oxygen separation module, a separation detection module and a product packaging module;
the raw material preparation module is used for preprocessing the process raw materials, in this embodiment, the process raw materials are unprocessed air, and the preprocessing process is specifically as follows:
step A1: screening out solid impurities in the process raw materials, specifically, adsorbing or filtering impurities such as particulate matters, dust, aerosol and the like in the air, and improving the availability of the process raw materials;
step A2: the method comprises the steps of collecting real-time particle concentration of process raw materials, wherein the particle detector is preferred to collect the real-time particle concentration of the process raw materials;
step A3: comparing the real-time state data of the process raw materials with the standard particle concentration;
if the real-time particle concentration is less than or equal to the standard particle concentration, judging that the process raw materials are pretreated;
if the real-time particulate matter concentration is greater than the standard particulate matter concentration, returning to the step A1;
the raw material preparation module conveys the pretreated process raw materials to the raw material purification module through a material conveying pipeline;
as shown in fig. 2, the raw material purifying module is used for removing impurity gas in the process raw material, and the purifying process is specifically as follows:
step B1: injecting the process raw materials into a gas purification pipeline, wherein the gas purification pipeline is connected with a plurality of impurity adsorption bins, and the impurity adsorption bins are filled with impurity adsorbents corresponding to the impurity gases, such as calcium oxide solids for adsorbing sulfur dioxide gas or sodium hydroxide reagents for adsorbing carbon dioxide gas;
step B2: the impurity adsorption bin is provided with ventilation valves at both sides, when process raw materials are injected into a gas purification pipeline, the ventilation valve at the gas inlet end of the impurity adsorption bin is opened, and the ventilation valve at the gas outlet end is kept closed, so that it is understood that impurity gas in the process raw materials is adsorbed in the impurity adsorption bin, the mass of an impurity adsorbent in the impurity adsorption bin gradually increases along with the adsorption of the impurity gas, and when the mass of the impurity adsorbent is no longer increased, the impurity gas is completely adsorbed or the impurity adsorbent reaches the adsorption limit;
step B3: the bottom of the impurity adsorption bin is provided with a gravity sensor for detecting the mass of the impurity adsorbent, and when the mass of the impurity adsorbent is kept stable and lasts for a period of time, the mass of the impurity adsorbent is compared with the adsorption limit mass;
if the mass of the impurity adsorbent is smaller than the adsorption limit mass, carrying out the subsequent steps;
if the mass of the impurity adsorbent is equal to the adsorption limit mass, replacing the impurity adsorbent in the impurity adsorption bin and returning to the step B2;
step B4: opening an air outlet end ventilation valve of the impurity adsorption bin and the next impurity adsorption bin, and repeating the steps B2 and B3 until the process raw materials pass through all the impurity adsorption bins;
step B5: drying the process raw materials, measuring the water content of the dried process raw materials, preferably measuring the real-time water content of the process raw materials by a weighing method with phosphorus pentoxide as a drying agent, and comparing the real-time water content with a standard water content;
if the real-time water content is less than or equal to the standard water content, judging that the process raw materials finish impurity purification;
if the real-time water content is greater than the standard water content, repeating the step B5;
the raw material purification module conveys the process raw materials subjected to impurity purification to the nitrogen-oxygen separation module through a material conveying pipeline;
the nitrogen-oxygen separation module is used for screening the process raw materials for completing impurity purification into nitrogen and oxygen, and the screening process is specifically as follows:
in the actual working process, the nitrogen-making and oxygen-making equipment obtains a process product by separating nitrogen, oxygen and impurity gas in the air, and the nitrogen-making and oxygen-making process comprises a molecular sieve adsorption method, a pressure change adsorption method and a membrane separation method, and the molecular sieve adsorption method is preferably used as the nitrogen-making and oxygen-making process in the embodiment;
injecting the process raw materials into a nitrogen-oxygen separation bin, and separating nitrogen and oxygen by the nitrogen-oxygen separation bin through a molecular sieve to obtain primary-sieve nitrogen and primary-sieve oxygen, wherein when air flows through the molecular sieve, oxygen molecules can pass through pore channels of the molecular sieve due to smaller molecular size, and nitrogen molecules cannot pass through the pore channels due to larger molecular size, so that the separation of nitrogen and oxygen is realized;
the nitrogen-oxygen separation module conveys the primary screening nitrogen and the primary screening oxygen to the separation detection module through different pipelines;
the separation detection module is used for detecting gas residues in the primary screening nitrogen sample and the primary screening oxygen sample, and the detection process is specifically as follows:
extracting a primary screening nitrogen sample and a primary screening oxygen sample, and measuring the oxygen concentration of the primary screening nitrogen and the nitrogen concentration of the primary screening oxygen; it is further explained that the primary screening nitrogen sample and the primary screening oxygen sample are uniformly distributed gases, and the oxygen concentration of the primary screening nitrogen sample and the nitrogen concentration in the primary screening oxygen sample can be measured by a combustion method and an absorbent method, so that the oxygen concentration of the primary screening nitrogen and the nitrogen concentration of the primary screening oxygen can be obtained;
comparing the oxygen concentration of the primary screening nitrogen with an oxygen concentration threshold;
if the value of the oxygen concentration is smaller than or equal to the first oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is a third product grade; if the value of the oxygen concentration is larger than the first oxygen concentration threshold value and smaller than or equal to the second oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is the second product grade; if the value of the oxygen concentration is larger than the second oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is the first product grade;
wherein the values of the first oxygen concentration threshold and the second oxygen concentration threshold are both greater than zero, the first oxygen concentration threshold is less than the first oxygen concentration threshold, the grade of the first product grade is less than the grade of the second product grade, and the grade of the second product grade is less than the grade of the third product grade;
similarly, comparing the nitrogen concentration of the primary screening oxygen with a nitrogen concentration threshold;
if the value of the nitrogen concentration is smaller than or equal to the first nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is a third product grade; if the value of the nitrogen concentration is larger than the first nitrogen concentration threshold value and smaller than or equal to the second nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is the second product grade; if the value of the nitrogen concentration is larger than the second nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is the first product grade;
wherein the first nitrogen concentration threshold and the second nitrogen concentration threshold are both greater than zero in value, the first nitrogen concentration threshold being less than the first nitrogen concentration threshold;
if the product grade of the primary screening nitrogen is the first product grade, marking the primary screening nitrogen as a screening invalid product; if the product grade of the primary screening nitrogen is the second product grade or the third product grade, marking the primary screening nitrogen as a screening effective product;
similarly, if the product grade of the primary screening oxygen is the first product grade, marking the primary screening oxygen as a screening ineffective product; if the product grade of the primary screening oxygen is the second product grade or the third product grade, marking the primary screening oxygen as a screening effective product;
the separation detection module conveys the screening invalid products to the nitrogen-oxygen separation module, and conveys the screening valid products to the separation detection module through different pipelines;
the product packaging module is used for filling and packaging the primary screening nitrogen and the primary screening oxygen, and the packaging process is specifically as follows:
packaging the primary screening nitrogen and the primary screening oxygen with the product grade of the second product grade into an industrial nitrogen cylinder and an industrial oxygen cylinder respectively;
packaging the primary screening nitrogen and the primary screening oxygen with the product grade of the third product grade into a high-purity nitrogen cylinder and a high-purity oxygen cylinder respectively;
it is understood that the nitrogen purity of the high-purity nitrogen cylinder is higher than that of the industrial nitrogen cylinder, and the oxygen purity of the high-purity oxygen cylinder is higher than that of the industrial oxygen cylinder;
in the application, if a corresponding calculation formula appears, the calculation formulas are all dimensionality-removed and numerical calculation, and the weight coefficient, the proportion coefficient and other coefficients in the formulas are set to be a result value obtained by quantizing each parameter, so long as the proportion relation between the parameter and the result value is not influenced.
Meanwhile, a comprehensive control method of the nitrogen and oxygen production equipment based on data acquisition is also provided, and the method specifically comprises the following steps:
step S101, a raw material preparation module is used for preprocessing the process raw materials, screening out solid impurities in the process raw materials, collecting the real-time particle concentration of the process raw materials, and step A3: comparing the real-time state data of the process raw materials with the standard particle concentration, judging that the process raw materials are pretreated if the real-time particle concentration is smaller than or equal to the standard particle concentration, returning to the steps again if the real-time particle concentration is larger than the standard particle concentration, and conveying the pretreated process raw materials to a raw material purification module through a conveying pipeline by a raw material preparation module;
step S102, the raw material purification module removes impurity gas in the process raw material, the process raw material is injected into a gas purification pipeline, the gas purification pipeline is connected with a plurality of impurity adsorption bins, impurity adsorbents corresponding to the impurity gas are filled in the impurity adsorption bins, ventilation valves are arranged on two sides of each impurity adsorption bin, when the process raw material is injected into the gas purification pipeline, the ventilation valves at the air inlet end of each impurity adsorption bin are opened, the ventilation valves at the air outlet end are kept closed, a gravity sensor is arranged at the bottom of each impurity adsorption bin and used for detecting the mass of the impurity adsorbent, when the mass of the impurity adsorbent is kept stable and lasts for a period of time, the mass of the impurity adsorbent is compared with the adsorption limit mass, if the mass of the impurity adsorbent is equal to the adsorption limit mass, the impurity adsorbent in the impurity adsorption bins is replaced and returned to the above steps, and the mass of the impurity adsorbent is smaller than the adsorption limit mass, the ventilation valves at the air outlet end of each impurity adsorption bin and the next impurity adsorption bin are opened, and finally the above steps are repeated until the process raw material passes through all the impurity adsorption bins, meanwhile, the ventilation valves at the air outlet end are kept closed, the gravity sensor is arranged at the bottom of the impurity adsorption bin and used for detecting the mass of the impurity adsorbent, when the mass of the impurity adsorbent is kept stable and lasts for a period of time, the mass of time, the impurity adsorbent is compared with the adsorption limit mass, when the mass of the impurity adsorbent is equal to the mass, and the impurity adsorbent mass is equal to the standard mass, if the impurity adsorbent mass is equal to the mass, and the impurity mass is transported to the impurity raw material after the impurity adsorption module and the impurity has the impurity adsorption mass and has been purified through the oxygen mass;
step S103, screening the process raw materials subjected to impurity purification into nitrogen and oxygen by a nitrogen-oxygen separation module, in the actual working process, obtaining a process product by nitrogen, oxygen and impurity gases in separation air by nitrogen-oxygen production equipment, injecting the process raw materials into a nitrogen-oxygen separation bin, separating the nitrogen and the oxygen by the nitrogen-oxygen separation bin through a molecular sieve to obtain primary screening nitrogen and primary screening oxygen, and conveying the primary screening nitrogen and the primary screening oxygen to a separation detection module through different pipelines by the nitrogen-oxygen separation module;
step S104, detecting gas residues in the primary screening nitrogen sample and the primary screening oxygen sample by the separation detection module, extracting the primary screening nitrogen sample and the primary screening oxygen sample, measuring the oxygen concentration of the primary screening nitrogen and the nitrogen concentration of the primary screening oxygen, comparing the oxygen concentration of the primary screening nitrogen with an oxygen concentration threshold value, and judging the product grade of the primary screening nitrogen to be a third product grade if the value of the oxygen concentration is smaller than or equal to the first oxygen concentration threshold value; if the value of the oxygen concentration is larger than the first oxygen concentration threshold value and smaller than or equal to the second oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is the second product grade; if the value of the oxygen concentration is larger than the second oxygen concentration threshold, judging that the product grade of the primary screening nitrogen is the first product grade, comparing the nitrogen concentration of the primary screening oxygen with the nitrogen concentration threshold in the same way, and if the value of the nitrogen concentration is smaller than or equal to the first nitrogen concentration threshold, judging that the product grade of the primary screening oxygen is the third product grade; if the value of the nitrogen concentration is larger than the first nitrogen concentration threshold value and smaller than or equal to the second nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is the second product grade; if the value of the nitrogen concentration is larger than the second nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is a first product grade, and if the product grade of the primary screening nitrogen is the first product grade, marking the primary screening nitrogen as a screening invalid product; if the product grade of the primary screening nitrogen is the second product grade or the third product grade, marking the primary screening nitrogen as a screening effective product, and similarly, if the product grade of the primary screening oxygen is the first product grade, marking the primary screening oxygen as a screening ineffective product; if the product grade of the primary screening oxygen is the second product grade or the third product grade, marking the primary screening oxygen as a screening effective product, conveying the screening ineffective product to a nitrogen-oxygen separation module by a separation detection module, and conveying the screening effective product to the separation detection module through different pipelines;
step S105, the product packaging module packages the primary screening nitrogen and the primary screening oxygen into an industrial nitrogen cylinder and an industrial oxygen cylinder respectively, and packages the primary screening nitrogen and the primary screening oxygen into a high-purity nitrogen cylinder and a high-purity oxygen cylinder respectively.
The preferred embodiments of the application disclosed above are intended only to assist in the explanation of the application. The preferred embodiments are not intended to be exhaustive or to limit the application to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, to thereby enable others skilled in the art to best understand and utilize the application. The application is limited only by the claims and the full scope and equivalents thereof.
Claims (6)
1. The comprehensive control system of the nitrogen and oxygen production equipment based on data acquisition is characterized by comprising a raw material preparation module, a raw material purification module, a nitrogen and oxygen separation module, a separation detection module and a product packaging module;
the raw material preparation module is used for preprocessing the process raw materials and conveying the preprocessed process raw materials to the raw material purification module through the material conveying pipeline;
the raw material purification module is used for removing impurity gas in the process raw materials and conveying the process raw materials subjected to impurity purification to the nitrogen-oxygen separation module through the material conveying pipeline;
the nitrogen-oxygen separation module is used for screening the process raw materials for completing impurity purification into nitrogen and oxygen, and the screened nitrogen and the screened oxygen are obtained and conveyed to the separation detection module through different pipelines;
the separation detection module is used for detecting gas residues in the primary screening nitrogen sample and the primary screening oxygen sample, conveying the screening invalid products to the nitrogen-oxygen separation module, and conveying the screening valid products to the separation detection module through different pipelines;
the product packaging module is used for filling and packaging the primary screening nitrogen and the primary screening oxygen.
2. The comprehensive control system of nitrogen and oxygen production equipment based on data acquisition according to claim 1, wherein the working process of the raw material preparation module is specifically as follows:
step A1: screening out solid impurities in the process raw materials;
step A2: collecting the real-time particle concentration of the process raw materials;
step A3: comparing the real-time state data of the process raw materials with the standard particle concentration;
if the real-time particle concentration is less than or equal to the standard particle concentration, judging that the process raw materials are pretreated;
and if the real-time particulate matter concentration is greater than the standard particulate matter concentration, returning to the step A1.
3. The comprehensive control system of nitrogen and oxygen production equipment based on data acquisition according to claim 1, wherein the raw material purification module has the purification process specifically as follows:
step B1: injecting the process raw materials into a gas purification pipeline, wherein the gas purification pipeline is connected with a plurality of impurity adsorption bins, and the impurity adsorption bins are filled with impurity adsorbents corresponding to the impurity gases;
step B2: the impurity adsorption bin is provided with ventilation valves at two sides, when process raw materials are injected into a gas purification pipeline, the ventilation valve at the gas inlet end of the impurity adsorption bin is opened, the ventilation valve at the gas outlet end is kept closed, impurity gas in the process raw materials is adsorbed in the impurity adsorption bin, the mass of an impurity adsorbent in the impurity adsorption bin is gradually increased along with the adsorption of the impurity gas, and when the mass of the impurity adsorbent is no longer increased, the impurity gas is completely adsorbed or the impurity adsorbent reaches the adsorption limit;
step B3: the bottom of the impurity adsorption bin is provided with a gravity sensor for detecting the mass of the impurity adsorbent, and when the mass of the impurity adsorbent is kept stable and lasts for a period of time, the mass of the impurity adsorbent is compared with the adsorption limit mass;
if the mass of the impurity adsorbent is smaller than the adsorption limit mass, carrying out the subsequent steps;
if the mass of the impurity adsorbent is equal to the adsorption limit mass, replacing the impurity adsorbent in the impurity adsorption bin and returning to the step B2;
step B4: opening an air outlet end ventilation valve of the impurity adsorption bin and the next impurity adsorption bin, and repeating the steps B2 and B3 until the process raw materials pass through all the impurity adsorption bins;
step B5: drying the process raw materials, measuring the water content of the dried process raw materials, and comparing the real-time water content with the standard water content;
if the real-time water content is less than or equal to the standard water content, judging that the process raw materials finish impurity purification;
and if the real-time water content is greater than the standard water content, repeating the step B5.
4. The comprehensive control system of nitrogen and oxygen production equipment based on data acquisition according to claim 1, wherein the screening process of the nitrogen and oxygen separation module is specifically as follows:
injecting the process raw materials into a nitrogen-oxygen separation bin, wherein a molecular sieve is arranged in the nitrogen-oxygen separation bin; sieving the process raw materials through a molecular sieve, wherein the molecular size of oxygen molecules is smaller than the diameter of molecular sieve pore paths, the molecular size of oxygen molecules passes through molecular sieve pore paths, the molecular size of nitrogen molecules is larger than the diameter of molecular sieve pore paths, and nitrogen molecules do not pass through molecular sieve pore paths; screening to obtain primary screening nitrogen and primary screening oxygen.
5. The comprehensive control system of nitrogen and oxygen production equipment based on data acquisition according to claim 1, wherein the detection process of the separation detection module is specifically as follows:
extracting a primary screening nitrogen sample and a primary screening oxygen sample, and measuring the oxygen concentration of the primary screening nitrogen and the nitrogen concentration of the primary screening oxygen;
comparing the oxygen concentration of the primary screening nitrogen with an oxygen concentration threshold;
if the value of the oxygen concentration is smaller than or equal to the first oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is a third product grade; if the value of the oxygen concentration is larger than the first oxygen concentration threshold value and smaller than or equal to the second oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is the second product grade; if the value of the oxygen concentration is larger than the second oxygen concentration threshold value, judging that the product grade of the primary screening nitrogen is the first product grade; wherein the values of the first oxygen concentration threshold and the second oxygen concentration threshold are both greater than zero, the first oxygen concentration threshold is less than the first oxygen concentration threshold, the grade of the first product grade is less than the grade of the second product grade, and the grade of the second product grade is less than the grade of the third product grade;
similarly, comparing the nitrogen concentration of the primary screening oxygen with a nitrogen concentration threshold;
if the value of the nitrogen concentration is smaller than or equal to the first nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is a third product grade; if the value of the nitrogen concentration is larger than the first nitrogen concentration threshold value and smaller than or equal to the second nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is the second product grade; if the value of the nitrogen concentration is larger than the second nitrogen concentration threshold value, judging that the product grade of the primary screening oxygen is the first product grade; wherein the first nitrogen concentration threshold and the second nitrogen concentration threshold are both greater than zero in value, the first nitrogen concentration threshold being less than the first nitrogen concentration threshold;
if the product grade of the primary screening nitrogen is the first product grade, marking the primary screening nitrogen as a screening invalid product; if the product grade of the primary screening nitrogen is the second product grade or the third product grade, marking the primary screening nitrogen as a screening effective product;
similarly, if the product grade of the primary screening oxygen is the first product grade, marking the primary screening oxygen as a screening ineffective product; if the product grade of the primary screening oxygen is the second product grade or the third product grade, the primary screening oxygen is marked as a screening effective product.
6. The comprehensive control system of nitrogen and oxygen production equipment based on data acquisition according to claim 1, wherein the packaging process of the product packaging module is specifically as follows:
packaging the primary screening nitrogen and the primary screening oxygen with the product grade of the second product grade into an industrial nitrogen cylinder and an industrial oxygen cylinder respectively; packaging the primary screening nitrogen and the primary screening oxygen with the product grade of the third product grade into a high-purity nitrogen cylinder and a high-purity oxygen cylinder respectively;
wherein, the nitrogen purity of the high-purity nitrogen cylinder is higher than that of the industrial nitrogen cylinder, and the oxygen purity of the high-purity oxygen cylinder is higher than that of the industrial oxygen cylinder.
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| US4857086A (en) * | 1987-10-17 | 1989-08-15 | Tokico Ltd | Gas separator system |
| CN102091499A (en) * | 2011-01-19 | 2011-06-15 | 上海穗杉实业有限公司 | Method and device for separating combined oxygen and nitrogen absorbed together by temperature change |
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