CN111413421A - Method for testing content of chloride ions in dust after sludge combustion and control method - Google Patents
Method for testing content of chloride ions in dust after sludge combustion and control method Download PDFInfo
- Publication number
- CN111413421A CN111413421A CN202010105932.8A CN202010105932A CN111413421A CN 111413421 A CN111413421 A CN 111413421A CN 202010105932 A CN202010105932 A CN 202010105932A CN 111413421 A CN111413421 A CN 111413421A
- Authority
- CN
- China
- Prior art keywords
- sludge
- content
- sample
- chloride ions
- combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 144
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 title claims abstract description 115
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 61
- 239000000428 dust Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000012360 testing method Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000004458 analytical method Methods 0.000 claims abstract description 51
- 238000010521 absorption reaction Methods 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000005406 washing Methods 0.000 claims abstract description 27
- 239000003245 coal Substances 0.000 claims abstract description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 238000011010 flushing procedure Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims description 73
- 239000012496 blank sample Substances 0.000 claims description 21
- 150000002500 ions Chemical class 0.000 claims description 19
- 239000010425 asbestos Substances 0.000 claims description 11
- 229910052895 riebeckite Inorganic materials 0.000 claims description 11
- 239000012086 standard solution Substances 0.000 claims description 7
- 238000007865 diluting Methods 0.000 claims description 5
- 239000012470 diluted sample Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000008237 rinsing water Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 6
- 239000002028 Biomass Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000010881 fly ash Substances 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 239000011398 Portland cement Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010344 co-firing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013468 resource allocation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N2030/645—Electrical detectors electrical conductivity detectors
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a method for testing the content of chloride ions in dust after sludge combustion, which comprises the following steps: performing combustion test on a sludge sample by using a calorimeter, wherein water is used as an absorption liquid; washing a crucible and an oxygen bomb of the calorimeter with water, and collecting washing water; mixing absorption liquid and flushing water to obtain a sludge analysis sample; and measuring the content of chloride ions in the sludge analysis sample. The invention also discloses a method for controlling the content of chloride ions in the electric dust removal of the coal-fired power plant, which comprises the following steps: the concentration of chloride ions in dust after the sludge sample is combusted is measured by adopting the method; and comparing whether the measured chloride ion concentration in the dust after the sludge sample is combusted is smaller than a first preset chloride ion threshold value, if so, judging that the sludge reaches the standard, and carrying out co-combustion on the sludge and the coal according to a preset ratio. The method ensures that the measurement data of the chloride ion content in the dust after the sludge is burnt is accurate, and can avoid the mixed burning of the sludge with overhigh chloride ion content and the coal based on the data.
Description
Technical Field
The invention relates to the technical field of combustion power generation, in particular to a method for testing the content of chloride ions in dust after sludge combustion and a method for controlling the content of chloride ions in electric dedusting of a coal-fired power plant.
Background
The biomass coupling power generation mainly refers to the power generation by blending and burning biomass and coal, is an efficient renewable energy utilization mode, can enhance the complementary advantages of biomass resources and coal-fired power plants, can directly generate power by means of an active coal-fired power plant system, and does not need to additionally add a power plant. The biomass mixed with coal generally comprises agricultural and forestry waste, sludge and the like, so that haze caused by open-air incineration of the agricultural and forestry waste can be reduced, and reduction, harmlessness, recycling and large-scale disposal of the sludge are promoted. The biomass coupling power generation has the advantages of high operation efficiency, good economic benefit, low pollution discharge, low fuel supply risk and the like, and is an important measure for optimizing energy resource allocation, promoting ecological civilization construction and promoting the green development of the economic society. In 2018, the national energy agency and the department of ecological environment have issued notifications about the construction of coal-fired coupled biomass power generation technical improvement and test point projects.
Electrical dedusting from coal fired power plants is commonly used in the manufacture of bricks and cement, and therefore the chloride ion concentration in electrical dedusting needs to be tightly controlled. The sludge mixed with the combustion generally contains a certain amount of chloride ions, which can affect the concentration of the chloride ions in the electric dedusting dust, but the prior art is lacked for testing the content of the chloride ions in the dust after the sludge is combusted and controlling the content of the chloride ions in the electric dedusting dust of a coal-fired power plant.
Disclosure of Invention
The invention aims to provide a method for testing the content of chloride ions in dust after sludge combustion and a method for controlling the content of chloride ions in electric dedusting of a coal-fired power plant, so as to avoid the content of chloride ions in electric dedusting from exceeding the standard.
In order to achieve the purpose, the invention adopts the following technical scheme:
A method for testing the content of chloride ions in dust generated after sludge combustion is characterized by comprising the following steps:
S1, preparing a sludge analysis sample:
Performing combustion test on a sludge sample by using a calorimeter, wherein water is used as an absorption liquid;
Washing a crucible and an oxygen bomb of the calorimeter with water, and collecting washing water;
Mixing absorption liquid and flushing water to obtain a sludge analysis sample;
And S2, measuring the content of chloride ions in the sludge analysis sample.
Optionally, in the step S2, an ion chromatograph is used to measure the content of chloride ions in the sludge analysis sample.
Optionally, before the step of S1, the method further includes a step of: s0, preparing a blank sample:
Performing a combustion test with a calorimeter without adding a sample, wherein water is used as an absorption liquid;
Washing a crucible and an oxygen bomb of the calorimeter with water, and collecting washing water;
The absorption liquid and the rinsing water were mixed as a blank sample.
Optionally, the step S1 specifically includes:
Placing a sample of pickled asbestos and sludge in a crucible of a calorimeter, using water as an absorption liquid, performing combustion test in the calorimeter, and pouring the absorption liquid into a volumetric flask; repeatedly washing the crucible and the oxygen bomb by using water, pouring the washing water into a volumetric flask containing absorption liquid, and then continuously adding water into the volumetric flask to a constant volume to reach a scale to obtain a sludge analysis sample;
The step S0 specifically includes:
Placing pickled asbestos in a crucible of a calorimeter, using water as an absorption liquid, performing combustion test in the calorimeter, and pouring the absorption liquid into a volumetric flask;
And repeatedly washing the crucible and the oxygen bomb by using water, pouring the washing water into the volumetric flask containing the absorption liquid, and then continuously adding water into the volumetric flask to a constant volume to a scale to obtain a blank sample.
optionally, in the step S1 and the step S0, the absorption liquid is 10m L, and the volumetric flasks are 50m L volumetric flasks;
In the step S1, the sludge sample was 0.5 g.
Optionally, the step S2 specifically includes:
Filtering the sludge analysis sample, and diluting the filtered sludge analysis sample with water;
The content of chloride ions in the diluted sample was measured by an ion chromatograph.
Optionally, in the step S2, measuring the content of chloride ions in the diluted sample by using an ion chromatograph specifically includes:
And simultaneously measuring the diluted sludge analysis sample, the blank sample and the chloride ion standard solution by using an ion chromatograph, and calculating to obtain the concentration of chloride ions in the sludge analysis sample.
A method for controlling the content of chloride ions in electric dust removal of a coal-fired power plant comprises the following steps:
Acquiring sludge used in sludge blending combustion of a coal-fired power plant as a sludge sample;
Measuring the concentration of chloride ions in the burned dust of the sludge sample by using the method for measuring the content of chloride ions in the burned dust of the sludge according to any one of claims 1 to 7;
Comparing whether the measured chloride ion concentration in the dust after the sludge sample is combusted is smaller than a first preset chloride ion threshold value or not, if so, judging that the sludge reaches the standard, and carrying out co-combustion on the sludge and coal according to a preset ratio; if not, judging that the sludge does not reach the standard and cannot be co-fired with the coal.
Optionally, the steps of: the method comprises the following steps of carrying out co-combustion on sludge and coal according to a preset proportion, and then:
Measuring the content of chloride ions in the electric dedusting generated by the sludge and coal co-combustion;
And comparing whether the content of the chloride ions in the measured electric dedusting is less than a second preset chloride ion threshold value, and if not, reducing the proportion of sludge co-combustion until the content of the chloride ions in the electric dedusting generated by sludge and coal co-combustion is less than the second preset chloride ion threshold value.
Optionally, the first predetermined chloride threshold is 400mg/kg, and the second predetermined chloride threshold is 1350 mg/kg.
Compared with the prior art, the invention has the following beneficial effects:
The invention adopts the calorimeter to carry out combustion test on the sludge sample, so that the sludge can be fully combusted; the absorption liquid in the calorimetric instrument is mixed with the flushing water for flushing the crucible and the oxygen bomb to be used as a sludge analysis sample, so that impurities can be prevented from being mixed in the sludge analysis sample, and the accuracy of measurement data is guaranteed. The method can rapidly and accurately obtain the content of chloride ions in the dust after the sludge is combusted by utilizing common equipment in a laboratory. Further, whether the sludge can be co-fired with the coal is judged based on the content of chloride ions in the dust after the sludge is fired, so that the phenomenon that the content of the chloride ions in the electric dedusting dust exceeds the standard due to the co-firing of the sludge with the coal, wherein the content of the chloride ions is too high, is avoided.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The embodiment of the invention provides a method for testing the content of chloride ions in dust after sludge combustion, which comprises the following steps:
S1, preparing a sludge analysis sample:
Performing combustion test on a sludge sample by using a calorimeter, wherein water is used as an absorption liquid;
Washing a crucible and an oxygen bomb of the calorimeter with water, and collecting washing water;
The absorption liquid and the washing water were mixed to obtain a sludge analysis sample.
And S2, measuring the content of chloride ions in the sludge analysis sample.
The invention adopts the calorimeter to carry out combustion test on the sludge sample, can ensure that the sludge is fully combusted, uses the absorption liquid in the calorimeter and the washing water for washing the crucible and the oxygen bomb to be mixed as the sludge analysis sample, can avoid impurities mixed in the sludge analysis sample and ensures the accuracy of the measured data. The method can rapidly and accurately obtain the content of chloride ions in the dust after the sludge is combusted by utilizing common equipment in a laboratory.
In the embodiment of the present invention, in the step S2, an ion chromatograph is specifically used to measure the content of chloride ions in the sludge analysis sample. The ion chromatograph can accurately measure the content of low-concentration chloride ions.
In the present example, a blank sample was first prepared. Namely, the step of S1 is preceded by the step of: s0, preparing a blank sample, which specifically comprises the following steps: placing pickled asbestos in a crucible of a calorimeter, using water as an absorption liquid, and pouring the absorption liquid into a volumetric flask after a combustion test is carried out in the calorimeter; and repeatedly washing the crucible and the oxygen bomb by using water, pouring the washing water into the volumetric flask containing the absorption liquid, and then continuously adding water into the volumetric flask to a constant volume to a scale to obtain a blank sample.
After obtaining a blank sample, the inventive example then prepares a sludge analysis sample. Namely, the step S1 specifically includes: placing a sample of pickled asbestos and sludge in a crucible of a calorimeter, using water as an absorption liquid, performing combustion test in the calorimeter, and pouring the absorption liquid into a volumetric flask; and repeatedly washing the crucible and the oxygen bomb by using water, pouring the washing water into a volumetric flask containing absorption liquid, and then continuously adding water into the volumetric flask to a constant volume to a scale to obtain a sludge analysis sample.
In the embodiment of the invention, the difference of the preparation processes of the blank sample and the sludge analysis sample is only that the sludge sample is added in the preparation process of the sludge analysis sample. Therefore, the influence of substances brought by the outside on the measurement result can be deducted through the blank sample in the subsequent step of testing the content of the chloride ions in the sludge analysis sample by using the ion chromatograph, so that the measurement result is more accurate.
specifically, in the step of preparing a sludge analysis sample in the aforementioned S1 and the step of S0, the absorption liquid is 10m L, the volumetric flasks are 50m L volumetric flasks, and in the step of S1, the sludge sample is 0.5 g.
Finally, the embodiment of the invention measures the content of chloride ions in the sludge analysis sample, and specifically comprises the following steps: filtering the sludge analysis sample, and diluting the blank sample and the filtered sludge analysis sample with water; and simultaneously measuring the diluted sludge analysis sample, the diluted blank sample and the chloride ion standard solution by using an ion chromatograph, and calculating to obtain the chloride ion concentration in the sludge analysis sample.
Wherein the dilution times of the blank sample and the sludge analysis sample are both 10 times, and the chloride ion standard solution is the standard solution with the chloride ion concentration of 1 ppm.
The sludge analysis sample may have particles that cause clogging of the ion exchange chromatography column in the ion chromatograph, and is therefore filtered prior to testing by the ion chromatograph. The process of obtaining the chloride ion concentration in the sludge analysis sample by measuring and calculating with an ion chromatograph belongs to the prior art, and is not described herein again.
The invention also provides a method for controlling the content of chloride ions in the electric dust removal of the coal-fired power plant, which comprises the following steps:
Acquiring sludge used in sludge blending combustion of a coal-fired power plant as a sludge sample;
Measuring the concentration of chloride ions in dust after the sludge sample burns by adopting the method for testing the content of chloride ions in dust after the sludge burns;
Comparing whether the measured chloride ion concentration in the dust after the sludge sample is combusted is smaller than a first preset chloride ion threshold value or not, if so, judging that the sludge reaches the standard, and carrying out co-combustion on the sludge and coal according to a preset ratio; if not, judging that the sludge does not reach the standard and cannot be co-fired with the coal.
Wherein the first predetermined chloride threshold is 400 mg/kg.
According to the invention, only the sludge with the chloride ion concentration of less than 400mg/kg in the burnt dust is mixed with the coal, so that the phenomenon that the chloride ion concentration content in the electric dedusting dust is too high after mixing burning caused by too high chloride ion concentration content in the sludge is avoided. Thereby effectively ensuring that the content of chloride ions in the electric dust removal meets the requirements of preparing bricks, cement and the like.
After determining that the sludge can reach the standard and can be subjected to co-combustion, the embodiment of the invention also needs to determine whether the proportion of the co-combustion of the sludge is feasible. Namely the steps of: the method comprises the following steps of carrying out co-combustion on sludge and coal according to a preset proportion, and then:
S31, measuring the content of chloride ions in the electric dedusting generated by the co-combustion of the sludge and the coal;
S32, comparing whether the content of the chloride ions in the electric dedusting is smaller than a second preset chloride ion threshold value, if so, ending the step; if not, the sludge co-firing rate is decreased, and the process returns to step S31.
The method repeatedly measures the content of the chloride ions in the electric dedusting generated by the co-combustion of the sludge and the coal until the content of the chloride ions in the electric dedusting generated by the co-combustion of the sludge and the coal is less than a second preset chloride ion threshold value, so that the content of the chloride ions in the electric dedusting is ensured to reach the standard.
Wherein the second predetermined chloride threshold is 1350 mg/kg. The 1350mg/kg is obtained by the following steps: in the standard GB17502007 of the general Portland cement, the content of fly ash in the fly ash Portland cement is within 20-40%, and the content of chloride ions in the fly ash cement is less than 0.06%. The maximum 40 percent of the fly ash Portland cement is used as a component of the fly ash Portland cement, and the content of chloride ions in the electric dedusting is less than 1350 mg/kg. According to the method, the upper limit of the content of the chloride ions in the electric dedusting obtained by calculation according to the national standard is used as the second preset chloride ion threshold value, so that the electric dedusting with the chloride ion content meeting the national standard is obtained, and the electric dedusting has wide application prospect in the field of cement.
the method specifically comprises the steps of adding the electric dedusting into a 50m L volumetric flask to fix the volume to a scale to be used as an electric dedusting analysis sample, filtering the electric dedusting analysis sample, diluting by 10 times, simultaneously measuring the electric dedusting analysis sample and a chloride ion standard solution by using an ion chromatograph, and calculating to obtain the chloride ion concentration in the electric dedusting analysis sample.
The invention adopts the calorimeter and the ion chromatograph to measure the content of chloride ions in dust after sludge combustion, and has simple test process and accurate test result. Based on the measurement result of the content of chloride ions in dust after sludge combustion, the sludge with the chloride ion content meeting the requirement is selected for mixed combustion, so that the excessive electric dedusting content obtained after sludge mixed combustion is avoided. Furthermore, the invention also determines the proportion of sludge doped burning by measuring the content of chloride ions in the electric dedusting to obtain the electric dedusting for cement, and the electric dedusting obtained by the invention has wide application prospect in building materials such as cement, bricks and the like.
In order to further understand the present application, the following example is used to specifically describe the method for testing the content of chloride ions in the dust after sludge combustion provided by the present application.
Example 1
This example 1 provides a specific test procedure for chloride ions in dust after sludge combustion:
(1) Preparation of a blank sample:
the method comprises the steps of taking acid-washed asbestos, placing the acid-washed asbestos into a crucible of a calorimeter, measuring 10m L deionized water as absorption liquid, adding the absorption liquid into an oxygen bomb, placing the crucible into the oxygen bomb, carrying out combustion test by the calorimeter, pouring the absorption liquid into a 50m L volumetric flask after the combustion test is finished, repeatedly flushing the crucible and the oxygen bomb by the deionized water, pouring flushing water into the 50m L volumetric flask containing the absorption liquid, and fixing the volume to the scale to obtain a 50m L blank sample.
(2) Preparation of sludge analysis samples:
the method comprises the steps of taking acid-washed asbestos, placing the acid-washed asbestos into a crucible of a calorimeter, taking a sludge sample of 0.5g, placing the sludge sample on the acid-washed asbestos, taking 10m L deionized water as an absorption liquid, adding the absorption liquid into an oxygen bomb, placing the crucible into the oxygen bomb, carrying out a combustion test by the calorimeter, pouring the absorption liquid into a 50m L volumetric flask after the combustion test is finished, repeatedly flushing the crucible and the oxygen bomb by the deionized water, pouring flushing water into the 50m L volumetric flask containing the absorption liquid, and fixing the volume to a scale to obtain a 50m L sludge analysis sample.
(3) Measuring by an ion chromatograph;
Diluting a sludge analysis sample and a blank sample by 10 times by using deionized water respectively; and simultaneously placing the chloride ion standard solution with the chloride ion content of 1ppm, the sludge analysis sample diluted by 10 times and the blank sample on an ion chromatograph for measurement, and calculating to obtain the chloride ion content of the sludge analysis sample.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for testing the content of chloride ions in dust generated after sludge combustion is characterized by comprising the following steps:
S1, preparing a sludge analysis sample:
Performing combustion test on a sludge sample by using a calorimeter, wherein water is used as an absorption liquid;
Washing a crucible and an oxygen bomb of the calorimeter with water, and collecting washing water;
Mixing absorption liquid and flushing water to obtain a sludge analysis sample;
And S2, measuring the content of chloride ions in the sludge analysis sample.
2. The method for measuring the content of chloride ions in dust after sludge combustion as claimed in claim 1, wherein the step of S2 is a step of measuring the content of chloride ions in the sludge analysis sample by using an ion chromatograph.
3. The method for testing the content of chloride ions in dust generated after sludge combustion as claimed in claim 2, wherein the step of S1 is preceded by a step of:
S0, preparing a blank sample:
Performing a combustion test with a calorimeter without adding a sample, wherein water is used as an absorption liquid;
Washing a crucible and an oxygen bomb of the calorimeter with water, and collecting washing water;
The absorption liquid and the rinsing water were mixed as a blank sample.
4. The method for testing the content of chloride ions in dust generated after sludge combustion as claimed in claim 3, wherein the step S1 specifically comprises:
Placing a sample of pickled asbestos and sludge in a crucible of a calorimeter, using water as an absorption liquid, performing combustion test in the calorimeter, and pouring the absorption liquid into a volumetric flask; repeatedly washing the crucible and the oxygen bomb by using water, pouring the washing water into a volumetric flask containing absorption liquid, and then continuously adding water into the volumetric flask to a constant volume to reach a scale to obtain a sludge analysis sample;
The step S0 specifically includes:
Placing pickled asbestos in a crucible of a calorimeter, using water as an absorption liquid, performing combustion test in the calorimeter, and pouring the absorption liquid into a volumetric flask; and repeatedly washing the crucible and the oxygen bomb by using water, pouring the washing water into the volumetric flask containing the absorption liquid, and then continuously adding water into the volumetric flask to a constant volume to a scale to obtain a blank sample.
5. the method for testing the content of chloride ions in dust generated after sludge combustion as claimed in claim 4, wherein in both the step S1 and the step S0, the absorption liquid is 10m L, and the volumetric flasks are 50m L volumetric flasks;
In the step S1, the sludge sample was 0.5 g.
6. The method for testing the content of chloride ions in dust generated after sludge combustion as claimed in claim 3, wherein the step S2 specifically comprises:
Filtering the sludge analysis sample, and diluting the filtered sludge analysis sample with water;
The content of chloride ions in the diluted sample was measured by an ion chromatograph.
7. The method for measuring the content of chloride ions in dust generated after sludge combustion according to claim 6, wherein in the step S2, the measuring the content of chloride ions in the diluted sample by an ion chromatograph specifically comprises:
And simultaneously measuring the diluted sludge analysis sample, the blank sample and the chloride ion standard solution by using an ion chromatograph, and calculating to obtain the chloride ion concentration in the sludge analysis sample.
8. A method for controlling the content of chloride ions in electric dedusting of a coal-fired power plant is characterized by comprising the following steps:
Acquiring sludge used in sludge blending combustion of a coal-fired power plant as a sludge sample;
Measuring the concentration of chloride ions in the burned dust of the sludge sample by using the method for measuring the content of chloride ions in the burned dust of the sludge according to any one of claims 1 to 7;
Comparing whether the measured chloride ion concentration in the dust after the sludge sample is combusted is smaller than a first preset chloride ion threshold value or not, if so, judging that the sludge reaches the standard, and carrying out co-combustion on the sludge and coal according to a preset ratio; if not, judging that the sludge does not reach the standard and cannot be co-fired with the coal.
9. The method for controlling the content of chloride ions in the electric dust removal of the coal-fired power plant according to claim 8, characterized by comprising the steps of: the method comprises the following steps of carrying out co-combustion on sludge and coal according to a preset proportion, and then:
Measuring the content of chloride ions in the electric dedusting generated by the sludge and coal co-combustion;
And comparing whether the content of the chloride ions in the measured electric dedusting is less than a second preset chloride ion threshold value, and if not, reducing the proportion of sludge co-combustion until the content of the chloride ions in the electric dedusting generated by sludge and coal co-combustion is less than the second preset chloride ion threshold value.
10. The method of claim 9, wherein the first predetermined chloride threshold is 400mg/kg and the second predetermined chloride threshold is 1350 mg/kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105932.8A CN111413421A (en) | 2020-02-20 | 2020-02-20 | Method for testing content of chloride ions in dust after sludge combustion and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105932.8A CN111413421A (en) | 2020-02-20 | 2020-02-20 | Method for testing content of chloride ions in dust after sludge combustion and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111413421A true CN111413421A (en) | 2020-07-14 |
Family
ID=71490891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010105932.8A Pending CN111413421A (en) | 2020-02-20 | 2020-02-20 | Method for testing content of chloride ions in dust after sludge combustion and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111413421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812266A (en) * | 2020-08-04 | 2020-10-23 | 江西华赣瑞林稀贵金属科技有限公司 | Method for detecting chlorine content in smelting smoke dust by using organic grease as raw material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009038757A2 (en) * | 2007-09-19 | 2009-03-26 | Ambit Biosciences Corporation | Solid forms comprising n-(5-tert-butyl-isoxazol-3-yl)-n'-{4-[7-(2-morpholin-4-yl-ethoxy)imidazo[2,1-b][1,3]benzothiazol-2-yl]phenyl}urea, compositions thereof, and uses therewith |
| CN101799407A (en) * | 2010-03-26 | 2010-08-11 | 苏州市贝特利高分子材料有限公司 | Method for measuring content of halogen |
| CN106018666A (en) * | 2016-06-24 | 2016-10-12 | 苏州新区环保服务中心有限公司 | Oxygen bomb combustion method for testing content of halogens and content of sulphur in industrial solid waste |
| CN110398564A (en) * | 2019-06-24 | 2019-11-01 | 广东省特种设备检测研究院中山检测院 | The detection method of chlorinity in a kind of solid biomass fuel |
-
2020
- 2020-02-20 CN CN202010105932.8A patent/CN111413421A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009038757A2 (en) * | 2007-09-19 | 2009-03-26 | Ambit Biosciences Corporation | Solid forms comprising n-(5-tert-butyl-isoxazol-3-yl)-n'-{4-[7-(2-morpholin-4-yl-ethoxy)imidazo[2,1-b][1,3]benzothiazol-2-yl]phenyl}urea, compositions thereof, and uses therewith |
| CN101799407A (en) * | 2010-03-26 | 2010-08-11 | 苏州市贝特利高分子材料有限公司 | Method for measuring content of halogen |
| CN106018666A (en) * | 2016-06-24 | 2016-10-12 | 苏州新区环保服务中心有限公司 | Oxygen bomb combustion method for testing content of halogens and content of sulphur in industrial solid waste |
| CN110398564A (en) * | 2019-06-24 | 2019-11-01 | 广东省特种设备检测研究院中山检测院 | The detection method of chlorinity in a kind of solid biomass fuel |
Non-Patent Citations (3)
| Title |
|---|
| 刘萍 等: "氧弹燃烧-离子色谱法测定TAC膜中氯含量", 《信息记录材料》 * |
| 林凯明 等: "氧弹燃烧-离子色谱法测定固体生物质燃料中氯含量不确定度评估", 《广东化工》 * |
| 陈小涵: "污泥的燃烧特性与氯析出规律的实验研究", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812266A (en) * | 2020-08-04 | 2020-10-23 | 江西华赣瑞林稀贵金属科技有限公司 | Method for detecting chlorine content in smelting smoke dust by using organic grease as raw material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11802082B2 (en) | Co-disposal pollution control method of municipal solid waste and fly ash leached by membrane concentrate, obtained residue and application thereof | |
| CN114235523A (en) | Method for detecting content of heavy metal elements in fly ash of household garbage power plant | |
| CN107300601A (en) | A kind of assay method of flyash ammonium ion content | |
| CN111413421A (en) | Method for testing content of chloride ions in dust after sludge combustion and control method | |
| CN113182324B (en) | A method for converting domestic waste incineration fly ash into high-performance wastewater treatment agent using micro-plasma discharge | |
| Zhou et al. | Chemical Characteristics and Source of PM 2.5 in Hohhot, a Semi-arid City in Northern China: Insight from the COVID-19 Lockdown | |
| CN107050733A (en) | A kind of stabilization agent of incineration of refuse flyash, its preparation method and its application | |
| CN103472146A (en) | Method for measuring content of chloridion and fluorinion in solid biomass fuel | |
| CN105623757B (en) | Water-coal-slurry is prepared using oil-refining chemical alkaline sewage | |
| CN113624829B (en) | Method for testing nitrate nitrogen-oxygen isotopes in water sample by trivalent titanium reduction method | |
| CN105238427B (en) | A kind of blending method for reducing accurate eastern coal slagging properties | |
| CN113003959A (en) | Production process for preparing composite mineral admixture by utilizing concrete residues | |
| CN104671717B (en) | A kind of danger wastes carbonization curing process | |
| CN113776923A (en) | Pretreatment method for measuring trace elements in sludge | |
| CN215844823U (en) | Fly ash stabilization chelating agent proportioning system | |
| CN110308196A (en) | The measuring method of 19 elements such as germanium, boron, tin, iodine, fluorine, arsenic, strontium, barium in a kind of geochemical sample | |
| CN104941983A (en) | Method for removing heavy metals in garbage incinerating flying ash through three-dimensional electrode | |
| CN113029981A (en) | Method for detecting sludge total phosphorus of urban sewage plant | |
| Zhang et al. | Precipitation records of anthropogenic nitrogen pollution in two metropolitan cities of Southeast Asia | |
| Chen et al. | Modeling of oxidized cementitious waste forms: oxidation depths estimation and Tc leaching assessment under field scenarios | |
| CN111539656A (en) | Energy efficiency assessment method for sludge mixed combustion of circulating fluidized bed boiler | |
| CN104588390A (en) | Method for performing dechlorination on fly ash by utilizing residual sludge | |
| CN105439535B (en) | Desiccation/semi-oriented sludge physicochemical property conditioner, application process | |
| CN114062359B (en) | Method for rapidly detecting content of soluble Na in coal | |
| CN102661962B (en) | Method for identifying fly ash leading to concrete and mortar defects |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Applicant after: China Southern Power Grid Power Technology Co.,Ltd. Address before: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Applicant before: GUANGDONG DIANKEYUAN ENERGY TECHNOLOGY Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200714 |