CN112525764B - Rapid evaluation method and system for performance state of desulfurization and denitrification active coke - Google Patents

Rapid evaluation method and system for performance state of desulfurization and denitrification active coke Download PDF

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CN112525764B
CN112525764B CN202011221261.8A CN202011221261A CN112525764B CN 112525764 B CN112525764 B CN 112525764B CN 202011221261 A CN202011221261 A CN 202011221261A CN 112525764 B CN112525764 B CN 112525764B
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active coke
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向浩
熊敬超
邵雁
宋自新
代伟有
胡鑫
魏卫
刘子豪
秦峰
郭华军
潘春锋
胡国峰
郝佳宇
史记熙
刘颖
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Abstract

A method for rapidly evaluating the performance state of desulfurization and denitrification active coke comprises the following steps: step 1, after an active coke desulfurization and denitrification system normally operates for a period of time, taking one part of active coke of each stage, and dividing the taken active coke of each stage into two parts; and 2, volatilizing the two parts of the active coke in each stage at different temperatures respectively, recording the weight of the volatilized active coke, calculating the volatile component of the active coke in each stage based on the weight of the volatilized active coke, and judging the performance state of the active coke in each stage according to the volatile component of the active coke in each stage. The invention takes the volatilization of the active coke at each key point of the active coke desulfurization and denitrification system as a basis, and can quickly evaluate the performance state of the active coke at each point through a set of calculation formula and an evaluation system, and further judge possible faults of the system.

Description

Rapid evaluation method and system for performance state of desulfurization and denitrification active coke
Technical Field
The invention relates to the field of desulfurization and denitrification of activated coke, in particular to a rapid evaluation method and system for the performance state of the desulfurization and denitrification activated coke.
Background
The active coke desulfurization and denitrification technology is a dry flue gas treatment technology for integrally removing SO2, NOx, particulate matters, mercury, dioxin, furan, heavy metals, volatile organic compounds and other multiple pollutants in flue gas by utilizing the adsorption and catalysis functions of the active coke. The active coke desulfurization and denitrification technology has good pollutant removal effect, low energy consumption and no white smoke, and byproducts can be recycled, thereby being a flue gas purification technology with great development potential.
The active coke for desulfurization and denitrification is a porous carbon-containing material prepared from coal, and in the desulfurization and denitrification process, the active coke physically adsorbs and chemically adsorbs SO2 through internal micropores in an adsorption tower, and the surface active groups catalyze NOx to perform SCR reaction with NH3 to generate N2. After the adsorption is saturated, the active coke enters a regeneration tower, the adsorbate is removed at a high temperature of about 400 ℃, the adsorption capacity of the active coke is recovered, and the active coke enters the adsorption tower again for next adsorption.
The active coke continuously moves in the adsorption tower and the regeneration tower to carry out an adsorption-regeneration cycle process, the components loaded on the active coke and the corresponding performances are different at different positions and cycle stages, the performance states of the active coke at different stages of desulfurization and denitrification are rapidly and accurately mastered, and the method has important significance for accurately optimizing the parameters of the active coke desulfurization and denitrification system.
At present, the basic idea of an active coke performance test system is to simulate the flue gas, temperature and other conditions of active coke desulfurization and denitrification in a laboratory, quantitatively control the inlet flue gas conditions, and measure the adsorption capacity of the active coke to describe the adsorption performance of the active coke, for example, chinese patent application CN201120299729.5 generates simulated test flue gas through a coal-fired water heater, and chinese patent application CN201410247416.3 simulates flue gas components through a gas distribution system.
Disclosure of Invention
In view of the technical defects and technical drawbacks in the prior art, embodiments of the present invention provide a method and a system for rapidly evaluating the performance status of activated coke for desulfurization and denitrification, which overcome the above problems or at least partially solve the above problems, and the specific scheme is as follows:
as a first aspect of the present invention, there is provided a method for rapidly evaluating the performance state of desulfurization and denitrification activated coke, the method comprising:
step 1, after an active coke desulfurization and denitrification system normally operates for a period of time, taking one part of active coke of each stage, and dividing the taken active coke of each stage into two parts;
and 2, volatilizing the two parts of the active coke in each stage at different temperatures respectively, recording the weight of the volatilized active coke, calculating the volatile component of the active coke in each stage based on the weight of the volatilized active coke, and judging the performance state of the active coke in each stage according to the volatile component of the active coke in each stage.
Further, step 1 specifically comprises: enabling the activated coke desulfurization and denitrification to comprise n stages, taking one part of activated coke in each stage as an activated coke sample in a corresponding stage to obtain n samples, wherein the activated coke sample in the 1 st stage is fresh activated coke which is not adsorbed, and the activated coke sample in the i th stage is KiI is more than or equal to 1 and less than or equal to n, and the active coke sample K of the ith stage is addediIs divided into two parts, each is Ki1And Ki2；
The step 2 specifically comprises the following steps: record Ki1Has a weight of Mi1，Ki2Has a weight of Mi2Is a reaction of Ki1Volatilizing at a first temperature and recording Ki1The weight of the mixture after the first temperature volatilization treatment is mi1Is a reaction of Ki2Volatilizing at a second temperature and recording Ki2The weight of the mixture after the volatilization treatment at the second temperature is mi2；
Order to
Figure BDA0002762107760000021
The calculation formula for obtaining the volatile matter for evaluating the performance state of the activated coke in the 1 st stage is as follows:
the formula I is as follows:
Figure BDA0002762107760000031
volatile matter R based on the performance status of the stage 1 activated coke1Judging the performance state of the activated coke in the 1 st stage;
the calculation formula for obtaining the volatile component for evaluating the performance state of the activated coke at the i-th stage is as follows:
the formula II is as follows:
Figure BDA0002762107760000032
in the formula II, i is more than or equal to 2 and less than or equal to n, and the volatile component R based on the performance state of the i-stage active cokei1And Ri2The value of (b) determines the performance state of the activated coke in the i-th stage.
Further, K is addedi1Volatilizing at a first temperature and recording Ki1The weight of the mixture after the first temperature volatilization treatment is mi1Is a reaction of Ki2Volatilizing at a second temperature and recording Ki2The weight of the mixture after the volatilization treatment at the second temperature is mi2The method specifically comprises the following steps:
will Ki1Heating at a first temperature for a first predetermined time, and taking out Ki1Placing the mixture into a dryer for cooling for a second preset time, weighing the mixture, and recording the weight asmi1(ii) a Will Ki2Heating at a second temperature for a first predetermined time, and taking out Ki2Cooling in a drier for a second predetermined time, weighing, and recording the weight as mi2。
Further, the weight of the n samples is equal, and the active coke sample of each stage is divided equally into two parts, namely Ki1And Ki2And the sum is equal, wherein i is more than or equal to 1 and less than or equal to n.
Further, n is equal to 4, wherein, taking fresh activated coke which is not adsorbed at an activated coke inlet as a sample of the 1 st stage, taking activated coke at a denitration section of the adsorption tower as a sample of the 2 nd stage, taking activated coke at an inlet of the regeneration tower as a sample of the 3 rd stage, taking activated coke at an outlet of the regeneration tower as a sample of the 3 rd stage, and judging the performance state of the activated coke of each stage according to the volatile component of the activated coke of each stage specifically comprises the following steps:
when R is1<At 0.1, the state of fresh activated coke showing no adsorption at the activated coke inlet was evaluated as good, and R was1When the content of the active coke is more than or equal to 0.1, the state of the fresh active coke which represents the inlet of the active coke and is not adsorbed is evaluated as overhigh volatile content;
when R is21Not less than 0.2 and R22<When 0.2, the performance state of the activated coke at the denitration section of the adsorption tower is evaluated to be good; when R is21<When 0.2, the performance state of the activated coke at the denitration section of the adsorption tower is evaluated as insufficient ammonia absorption; when R is21Not less than 0.2 and R22More than or equal to 0.2, which indicates that the performance state of the activated coke at the denitration section of the adsorption tower is evaluated as ammonium salt blockage;
when R is31<0.2 and R32When the active coke content is more than or equal to 0.2, the evaluation of the performance state of the active coke at the inlet of the regeneration tower is good; when R is31When the content is more than or equal to 0.2, the performance state of the active coke at the inlet of the regeneration tower is evaluated as SO adsorption2Excess; when R is31<0.2 and R32<0.2, the performance state of the activated coke at the inlet of the regeneration tower is evaluated as SO adsorption2Deficiency;
when R is41<0.2 and R42When the active coke content is more than or equal to 0.4, the evaluation of the performance state of the active coke at the outlet of the regeneration tower is good; when R is41When not less than 0.2, regeneration is indicatedEvaluating the performance state of the active coke at the tower outlet as non-regeneration; when R is41<0.2 and R42<0.4, which indicates that the performance state of the activated coke at the outlet of the regenerator was evaluated as insufficient regeneration.
Further, the first temperature is 140 ℃. + -. 10 ℃ and the second temperature is 450 ℃. + -. 10 ℃.
Further, the first preset time is 10 minutes, and the second preset time is 20 minutes.
As a second aspect of the invention, a system for rapidly evaluating the performance state of desulfurization and denitrification active coke is provided, wherein the system comprises a sample extraction unit and a volatilization calculation unit;
the sample extraction unit is used for taking one part of the active coke of each stage after the active coke desulfurization and denitrification system normally operates for a period of time, and dividing the taken active coke of each stage into two parts;
the volatilization calculation unit is used for volatilizing the two parts of the activated coke in each stage at different temperatures respectively, recording the weight of the volatilized activated coke, calculating the volatile component of the activated coke in each stage based on the weight of the volatilized activated coke, and judging the performance state of the activated coke in each stage according to the volatile component of the activated coke in each stage.
Further, the sample extraction unit is specifically configured to: enabling the activated coke desulfurization and denitrification to comprise n stages, taking one part of activated coke in each stage as an activated coke sample in a corresponding stage to obtain n samples, wherein the activated coke sample in the 1 st stage is fresh activated coke which is not adsorbed, and the activated coke sample in the i th stage is KiI is more than or equal to 1 and less than or equal to n, and the active coke sample K of the ith stage is addediIs divided into two parts, each is Ki1And Ki2；
The volatilization calculation unit is specifically configured to: record Ki1Has a weight of Mi1，Ki2Has a weight of Mi2Is a reaction of Ki1Volatilizing at a first temperature and recording Ki1The weight of the mixture after the first temperature volatilization treatment is mi1Is a reaction of Ki2Volatilizing at a second temperature and recording Ki2Volatilizing at a second temperatureHas a weight of mi2；
Order to
Figure BDA0002762107760000051
The calculation formula for obtaining the volatile matter for evaluating the performance state of the activated coke in the 1 st stage is as follows:
the formula I is as follows:
Figure BDA0002762107760000052
volatile matter R based on the performance status of the stage 1 activated coke1Judging the performance state of the activated coke in the 1 st stage;
the calculation formula for obtaining the volatile component for evaluating the performance state of the activated coke at the i-th stage is as follows:
the formula II is as follows:
Figure BDA0002762107760000053
in the formula II, i is more than or equal to 2 and less than or equal to n, and the volatile component R based on the performance state of the i-stage active cokei1And Ri2The value of (b) determines the performance state of the activated coke in the i-th stage.
Further, n is equal to 4, the weight of n samples is equal, the active coke sample of each stage is equally divided into two parts, wherein, the fresh active coke which is not adsorbed at the active coke inlet is taken as the sample of the 1 st stage, the active coke of the denitration section of the adsorption tower is taken as the sample of the 2 nd stage, the active coke at the regeneration tower inlet is taken as the sample of the 3 rd stage, the active coke at the regeneration tower outlet is taken as the sample of the 3 rd stage, and the volatile component of the active coke of each stage is used for judging the performance state of the active coke of each stage, specifically:
when R is1<At 0.1, the state of fresh activated coke showing no adsorption at the activated coke inlet was evaluated as good, and R was1When the temperature is more than or equal to 0.1, the state of the fresh activated coke which represents the inlet of the activated coke and is not adsorbed is evaluated to be too high in volatile component, which indicates that the fresh activated coke has more volatile components at the temperature of more than 400 ℃, and the problem of incomplete carbonization and activation process possibly exists, so that the process needs to be carried outDetecting parameters such as ignition point, desulfurization and denitrification capacity and the like in one step;
when R is21Not less than 0.2 and R22<When 0.2, the performance state of the activated coke at the denitration section of the adsorption tower is evaluated to be good; when R is21<When the ammonia amount is 0.2, the performance state of the activated coke at the denitration section of the adsorption tower is evaluated to be insufficient, the ammonia amount adsorbed by the activated coke at the denitration section is insufficient, and whether an ammonia injection system operates normally or the ammonia injection amount is increased needs to be further checked; when R is21Not less than 0.2 and R22Not less than 0.2, which indicates that the performance state of the activated coke in the denitration section of the adsorption tower is evaluated as ammonium salt blockage, and indicates the residual SO in the desulfurization section2Greater amount of NH with3、O2Etc. react to form (NH)4)2SO4When the substances can be decomposed at the temperature of more than 400 ℃, the adsorption performance of the active coke is influenced, the denitration effect is poor, and whether the operation of the desulfurization section is normal needs to be further checked;
when R is31<0.2 and R32When the active coke content is more than or equal to 0.2, the evaluation of the performance state of the active coke at the inlet of the regeneration tower is good; when R is31When the content is more than or equal to 0.2, the performance state of the active coke at the inlet of the regeneration tower is evaluated as SO adsorption2Excess indicates that the activated coke adsorbs SO2Too much amount of active coke, the circulation speed of the active coke needs to be increased, or the amount of the active coke needs to be increased; when R is31<0.2 and R32<0.2, the performance state of the activated coke at the inlet of the regeneration tower is evaluated as SO adsorption2Deficiency, indicating SO adsorbed by the activated coke2The amount of the active coke is insufficient, and the circulation speed of the active coke needs to be reduced, or the amount of the active coke needs to be reduced;
when R is41<0.2 and R42When the active coke content is more than or equal to 0.4, the evaluation of the performance state of the active coke at the outlet of the regeneration tower is good; when R is41When the active coke performance state of the outlet of the regeneration tower is not regenerated, the active coke performance state is evaluated to be not regenerated, the active coke is almost not regenerated, and whether the regeneration tower has faults such as leakage, short circuit and the like needs to be checked; when R is41<0.2 and R42<0.4, the performance state of the active coke at the outlet of the regeneration tower is evaluated as insufficient regeneration, which indicates that the ammonium salt adsorbed on the active coke is not sufficiently resolved, and the regeneration temperature needs to be increased or the regeneration time of the active coke needs to be prolonged.
The invention has the following beneficial effects:
the invention takes the volatilization of the active coke at each key point of the active coke desulfurization and denitrification system as a basis, can rapidly evaluate the performance state of the active coke at each point through a set of calculation formula and an evaluation system, and further judge possible faults of the system.
Drawings
FIG. 1 is a flow chart of a method for rapidly evaluating the performance state of desulfurization and denitrification activated coke according to an embodiment of the invention;
fig. 2 is a schematic diagram of 4 representative points provided by an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, as a first embodiment of the present invention, there is provided a method for rapidly evaluating the performance status of a desulfurization and denitrification activated coke, the method including:
step 1, after an active coke desulfurization and denitrification system normally operates for a period of time, taking one part of active coke of each stage, and dividing the taken active coke of each stage into two parts;
and 2, volatilizing the two parts of the active coke in each stage at different temperatures respectively, recording the weight of the volatilized active coke, calculating the volatile component of the active coke in each stage based on the weight of the volatilized active coke, and judging the performance state of the active coke in each stage according to the volatile component of the active coke in each stage.
In order to fully understand the performance state of the active coke at each stage in the active coke desulfurization and denitrification system, 4 representative points are selected, as shown in fig. 2, point a: a fresh activated coke inlet; point B: a denitration section of the adsorption tower; point C: a regeneration column inlet; and a point position D: and (4) an outlet of the regeneration tower.
The active coke at the point A is fresh active coke, and at the stage, the active coke almost has no adsorbate and is used as a reference for comparison;
the active coke at the point B is the active coke of a denitration section, and at the stage, the active coke adsorbs the desulfurized flue gas and ammonia gas to generate denitration reaction, NOxConversion to N2。
The active coke at the point C is the active coke at the inlet of the regeneration tower, at the stage, the active coke undergoes the desulfurization and denitrification stages, and the adsorbate is SO adsorbed by the desulfurization section2And residual NH of denitration section3With SO2And O2By reaction of (NH)4)2SO4And so on.
And the active coke at the point D is the active coke at the outlet of the regeneration tower, at the stage, the active coke completes the regeneration process under the heating of 400 ℃, adsorbates are better decomposed, and desorption gas enters an acid making system. The properties of the active coke are closer to those of fresh active coke.
It can be seen that substances adsorbed on the activated coke are different in different stages of desulfurization-denitrification-regeneration, and the volatilization temperatures of the substances are different, so that the performance state of the activated coke in each stage can be judged by testing the volatile components of the activated coke samples at different point positions at different temperatures.
The method for rapidly evaluating the performance state of the desulfurization and denitrification active coke comprises the following specific steps:
when the active coke system normally operates, within half an hour, 100g of active coke samples are respectively taken at A, B, C and D four points and are respectively marked as a sample A to a sample D.
20g of each of the four samples is taken and crushed into particles with the particle size of not more than 5 mm.
The disrupted sample was analyzed by an analytical balance, and 2 parts of 10g samples were taken out of each spot and each sample was designated as A1、A2，B1、B2，C1、C2，D1、D2The weight of each sample is respectively marked as MA1、MA2… … and so on.
A is to be1Putting the sample into a crucible with a matched tight cover, putting the crucible into a muffle furnace preheated to 150 ℃ in advance, heating the crucible at 140 +/-10 ℃ for 10 minutes, taking out the sample, putting the sample into a drier, cooling the sample for 20 minutes, and weighing the sample, wherein the weight is mA1(ii) a To B1、C1And D1The samples were treated in the same way, and the weights after treatment were recorded as mB1、mC1And mD1。
A is to be2The sample was placed in a crucible with a fitted tight lid, placed in a muffle furnace preheated to 470 ℃ in advance, and heated at 450 ℃. + -. 10 ℃ for 10 minutes. Then taking out the sample, putting the sample into a dryer for cooling for 20 minutes, and weighing the sample, wherein the weight is mA2(ii) a To B2、C2、D2The samples were treated in the same way, and the weights after treatment were recorded as mB2、mC2、mD2。
Note book
Figure BDA0002762107760000081
By analogy with the formula, V is obtained by calculationB1、VC1And VD1。
Note the book
Figure BDA0002762107760000091
Analogizing to the formula II, calculating to obtain VB2、VC2And VD2。
The performance status of the fresh activated coke was evaluated as follows:
note book
Figure BDA0002762107760000092
When R isA<At 0.1, the fresh activated coke status is evaluated as "good";
when R isAWhen the temperature is more than or equal to 0.1, the state of the fresh activated coke is evaluated as 'too high volatile component', which indicates that the fresh activated coke has more volatile components at the temperature of more than 400 ℃, the problem of incomplete carbonization and activation process possibly exists, and the parameters such as ignition point, desulfurization and denitrification capability and the like need to be further detected.
The performance state of the activated coke in the denitration section is evaluated as follows:
note book
Figure BDA0002762107760000093
Note the book
Figure BDA0002762107760000094
When R isB1Not less than 0.2 and RB2<When 0.2, the performance state of the activated coke in the denitration section is evaluated to be 'good';
when R isB1<When the ammonia amount is 0.2, evaluating the performance state of the active coke in the denitration section as 'insufficient ammonia absorption amount', indicating that the ammonia amount absorbed by the active coke in the denitration section is insufficient, and further checking whether an ammonia injection system operates normally or increasing the ammonia injection amount;
when R isB1Not less than 0.2 and RB2And when the content is more than or equal to 0.2, evaluating the performance state of the activated coke in the denitration section as ammonium salt blockage. Indicating residual SO of the desulfurization section2Greater amount of NH with3、O2Etc. react to form (NH)4)2SO4When the substances can be decomposed at the temperature of more than 400 ℃, the adsorption performance of the active coke is affected, the denitration effect is poor, and whether the operation of the desulfurization section is normal needs to be further checked.
The performance state of the activated coke at the inlet of the regeneration tower was evaluated as follows:
note the book
Figure BDA0002762107760000095
Note the book
Figure BDA0002762107760000096
When R isC1<0.2 and RC2When the active coke content is more than or equal to 0.2, the performance state of the active coke at the inlet of the regeneration tower is evaluated to be 'good';
when R isC1When the content of SO is more than or equal to 0.2, the performance state of the active coke at the inlet of the regeneration tower is evaluated as' SO adsorption2Excess ". Indicating that the active coke adsorbs SO2Too much amount of active coke, the circulation speed of the active coke needs to be increased, or the amount of the active coke needs to be increased;
when R isC1<0.2 and RB2<At 0.2 hour, the performance state of the activated coke at the inlet of the regeneration tower is evaluated as' SO adsorption2Deficiency ", indicates SO adsorbed by activated coke2The amount of the active coke is insufficient, and the circulation speed of the active coke needs to be reduced, or the amount of the active coke needs to be reduced.
The performance state of the active coke at the outlet of the regeneration tower is evaluated as follows:
note book
Figure BDA0002762107760000101
Note the book
Figure BDA0002762107760000102
When R isD1<0.2 and RD2When the active coke content is more than or equal to 0.4, the performance state of the active coke at the outlet of the regeneration tower is evaluated as 'good';
when R isD1When the active coke performance state at the outlet of the regeneration tower is more than or equal to 0.2, the performance state is evaluated as 'non-regeneration', which shows that the active coke is hardly regenerated, and whether the regeneration tower has faults such as leakage, short circuit and the like needs to be checked;
when R isC1<0.2 and RB2<At 0.4, the performance state of the active coke at the outlet of the regeneration tower is evaluated as 'insufficient regeneration', which indicates that the ammonium salt adsorbed on the active coke is not sufficiently resolved, and the regeneration temperature needs to be increased or the regeneration time of the active coke needs to be prolonged.
As a second embodiment of the present invention, there is provided a system for rapidly evaluating the performance status of desulfurization and denitrification activated coke, the system comprising a sample extraction unit and a volatilization calculation unit;
the sample extraction unit is used for taking one part of the active coke of each stage after the active coke desulfurization and denitrification system normally operates for a period of time, and dividing the taken active coke of each stage into two parts;
the volatilization calculation unit is used for volatilizing the two parts of the activated coke in each stage at different temperatures respectively, recording the weight of the volatilized activated coke, calculating the volatile component of the activated coke in each stage based on the weight of the volatilized activated coke, and judging the performance state of the activated coke in each stage according to the volatile component of the activated coke in each stage.
According to the invention, the volatile of the active coke at each key point of the active coke desulfurization and denitrification system is taken as a basis, and the performance state of the active coke at each point can be rapidly evaluated through a set of calculation formula and evaluation system, and possible faults of the system can be further judged. According to the invention, the detection time of the performance of the activated coke can be shortened to one hour from several hours of the traditional desulfurization and denitrification performance test, and the real-time rapid evaluation of the performance state of the activated coke can be realized without using huge desulfurization and denitrification performance test equipment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (7)

1. A method for rapidly evaluating the performance state of desulfurization and denitrification active coke is characterized by comprising the following steps:
step 1, after an active coke desulfurization and denitrification system normally operates for a period of time, taking one part of active coke of each stage, and dividing the taken active coke of each stage into two parts;
step 2, volatilizing the two parts of the active coke in each stage at different temperatures respectively, recording the weight of the volatilized active coke, calculating the volatile component of the active coke in each stage based on the weight of the volatilized active coke, and judging the performance state of the active coke in each stage according to the volatile component of the active coke in each stage;
wherein:
the step 1 specifically comprises the following steps: the desulfurization and denitrification of the active coke comprise n stages, and one part of the active coke in each stage is taken asObtaining n samples by the active coke samples of corresponding stages, wherein the active coke sample of the 1 st stage is fresh active coke which is not adsorbed, and the active coke sample of the i th stage is KiI is more than or equal to 1 and less than or equal to n, and the active coke sample K of the ith stage is addediIs divided into two parts, each is Ki1And Ki2；
The step 2 specifically comprises the following steps: record Ki1Has a weight of Mi1，Ki2Has a weight of Mi2A 1 is prepared byi1Volatilizing at a first temperature and recording Ki1The weight of the mixture after the first temperature volatilization treatment is mi1Is a reaction of Ki2Volatilizing at a second temperature and recording Ki2The weight of the mixture after the volatilization treatment at the second temperature is mi2；
Order to
Figure FDA0003645385130000011
The calculation formula for obtaining the volatile component for evaluating the performance state of the activated coke in the 1 st stage is as follows:
the formula I is as follows:
Figure FDA0003645385130000012
volatile matter R based on the performance status of the stage 1 activated coke1Judging the performance state of the activated coke in the 1 st stage;
the calculation formula for obtaining the volatile component for evaluating the performance state of the activated coke at the i-th stage is as follows:
the second formula is as follows:
Figure FDA0003645385130000013
in the formula II, i is more than or equal to 2 and less than or equal to n, and the volatile component R based on the performance state of the i-stage active cokei1And Ri2Judging the performance state of the activated coke in the i stage;
wherein the first temperature is 140 ℃ +/-10 ℃ and the second temperature is 450 ℃ +/-10 ℃.
2. The method for rapidly evaluating the performance state of the desulfurization and denitrification activated coke according to claim 1, wherein K isi1Volatilizing at a first temperature and recording Ki1The weight of the mixture after the first temperature volatilization treatment is mi1Is a reaction of Ki2Volatilizing at a second temperature and recording Ki2The weight of the mixture after the volatilization treatment at the second temperature is mi2The method specifically comprises the following steps:
will Ki1Heating at a first temperature for a first predetermined time, and taking out Ki1Cooling in a drier for a second predetermined time, weighing, and recording the weight as mi1(ii) a Will Ki2Heating at a second temperature for a first predetermined time, and taking out Ki2Cooling in a drier for a second predetermined time, weighing, and recording the weight as mi2。
3. The method for rapidly evaluating the performance state of the desulfurization and denitrification activated coke according to claim 1, wherein the weight of n parts of the sample is equal, and the activated coke sample in each stage is divided into two parts, namely Ki1And Ki2And the sum is equal, wherein i is more than or equal to 1 and less than or equal to n.
4. The method for rapidly evaluating the performance state of the desulfurization and denitrification active coke according to claim 3, wherein n is equal to 4, wherein fresh active coke which is not adsorbed at an active coke inlet is taken as a sample of the 1 st stage, active coke at a denitration section of the adsorption tower is taken as a sample of the 2 nd stage, active coke at an inlet of the regeneration tower is taken as a sample of the 3 rd stage, active coke at an outlet of the regeneration tower is taken as a sample of the 3 rd stage, and the performance state of the active coke at each stage is judged by the volatile component of the active coke at each stage and specifically comprises the following steps:
when R is1<At 0.1, the state of fresh activated coke showing no adsorption at the activated coke inlet was evaluated as good, and R was1When the content of the active coke is more than or equal to 0.1, the state of the fresh active coke which represents the inlet of the active coke and is not adsorbed is evaluated as overhigh volatile content;
when R is21Not less than 0.2 and R22<0.2 hour represents the desorption of the adsorption columnThe performance state of the active coke of the nitre section is evaluated to be good; when R is21<When 0.2, the performance state of the activated coke at the denitration section of the adsorption tower is evaluated as insufficient ammonia absorption; when R is21Not less than 0.2 and R22More than or equal to 0.2, which indicates that the performance state of the activated coke at the denitration section of the adsorption tower is evaluated as ammonium salt blockage;
when R is31<0.2 and R32When the pressure is more than or equal to 0.2, the performance state of the active coke at the inlet of the regeneration tower is evaluated to be good; when R is31When the content is more than or equal to 0.2, the performance state of the active coke at the inlet of the regeneration tower is evaluated as SO adsorption2Excess; when R is31<0.2 and R32<0.2, the performance state of the activated coke at the inlet of the regeneration tower is evaluated as SO adsorption2Deficiency;
when R is41<0.2 and R42When the active coke content is more than or equal to 0.4, the evaluation of the performance state of the active coke at the outlet of the regeneration tower is good; when R is41When the active coke content is more than or equal to 0.2, the performance state of the active coke at the outlet of the regeneration tower is evaluated as non-regeneration; when R is41<0.2 and R42<0.4, which indicates that the performance state of the activated coke at the outlet of the regenerator was evaluated as insufficient regeneration.
5. The method for rapidly evaluating the performance state of the desulfurization and denitrification activated coke according to claim 2, wherein the first preset time is 10 minutes, and the second preset time is 20 minutes.
6. A rapid evaluation system for the performance state of desulfurization and denitrification active coke is characterized by comprising a sample extraction unit and a volatilization calculation unit;
the sample extraction unit is used for taking one part of the active coke of each stage after the active coke desulfurization and denitrification system normally operates for a period of time, and dividing the taken active coke of each stage into two parts;
the volatilization calculation unit is used for volatilizing the two parts of the activated coke in each stage at different temperatures respectively, recording the weight of the volatilized activated coke, calculating the volatile component of the activated coke in each stage based on the weight of the volatilized activated coke, and judging the performance state of the activated coke in each stage according to the volatile component of the activated coke in each stage;
wherein:
the sample extraction unit is specifically configured to: enabling the activated coke desulfurization and denitrification to comprise n stages, taking one part of activated coke in each stage as an activated coke sample in a corresponding stage to obtain n samples, wherein the activated coke sample in the 1 st stage is fresh activated coke which is not adsorbed, and the activated coke sample in the i th stage is KiI is more than or equal to 1 and less than or equal to n, and the active coke sample K of the ith stage is addediIs divided into two parts, each is Ki1And Ki2；
The volatilization calculation unit is specifically configured to: record Ki1Has a weight of Mi1，Ki2Has a weight of Mi2Is a reaction of Ki1Volatilizing at a first temperature and recording Ki1The weight of the mixture after the first temperature volatilization treatment is mi1Is a reaction of Ki2Volatilizing at a second temperature and recording Ki2The weight of the mixture after the volatilization treatment at the second temperature is mi2；
Order to
Figure FDA0003645385130000041
The calculation formula for obtaining the volatile matter for evaluating the performance state of the activated coke in the 1 st stage is as follows:
the formula I is as follows:
Figure FDA0003645385130000042
volatile matter R based on the performance status of the stage 1 activated coke1Judging the performance state of the activated coke in the 1 st stage;
the calculation formula for obtaining the volatile component for evaluating the performance state of the activated coke at the i-th stage is as follows:
the second formula is as follows:
Figure FDA0003645385130000043
in the formula II, i is more than or equal to 2 and less than or equal to n, and the volatile component R based on the performance state of the i-stage active cokei1And Ri2Judging the performance state of the active coke in the i stage;
wherein the first temperature is 140 ℃ +/-10 ℃ and the second temperature is 450 ℃ +/-10 ℃.
7. The system for rapidly evaluating the performance state of desulfurization and denitrification active coke according to claim 6, wherein n is equal to 4, n samples are equal in weight, and the active coke sample in each stage is equally divided into two, wherein fresh active coke which is not adsorbed at an active coke inlet is taken as a sample in the 1 st stage, active coke at a denitration section of the adsorption tower is taken as a sample in the 2 nd stage, active coke at an inlet of the regeneration tower is taken as a sample in the 3 rd stage, active coke at an outlet of the regeneration tower is taken as a sample in the 3 rd stage, and the performance state of the active coke in each stage is judged by the volatile content of the active coke in each stage, specifically:
when R is1<At 0.1, the state of fresh activated coke showing no adsorption at the activated coke inlet was evaluated as good, and R was1When the content of the active coke is more than or equal to 0.1, the state of fresh active coke which is not adsorbed at the active coke inlet is evaluated as overhigh volatile component;
when R is21Not less than 0.2 and R22<When 0.2, the performance state of the activated coke at the denitration section of the adsorption tower is evaluated to be good; when R is21<When 0.2, the performance state of the activated coke at the denitration section of the adsorption tower is evaluated as insufficient ammonia absorption; when R is21Not less than 0.2 and R22More than or equal to 0.2, which indicates that the performance state of the activated coke at the denitration section of the adsorption tower is evaluated as ammonium salt blockage;
when R is31<0.2 and R32When the active coke content is more than or equal to 0.2, the evaluation of the performance state of the active coke at the inlet of the regeneration tower is good; when R is31When the content is more than or equal to 0.2, the performance state of the active coke at the inlet of the regeneration tower is evaluated as SO adsorption2Excessive; when R is31<0.2 and R32<0.2, the performance state of the activated coke at the inlet of the regeneration tower is evaluated as SO adsorption2Deficiency;
when R is41<0.2 and R42When the active coke content is more than or equal to 0.4, the evaluation of the performance state of the active coke at the outlet of the regeneration tower is good; when R is41When the content of the active coke is more than or equal to 0.2, the active coke at the outlet of the regeneration tower is representedThe performance status was evaluated as not regenerated; when R is41<0.2 and R42<0.4, which indicates that the performance state of the activated coke at the outlet of the regenerator was evaluated as insufficient regeneration.
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