KR102318354B1 - Flue gas concentration independent purification treatment system under multiple working conditions and control method thereof - Google Patents

Abstract

The present application provides a flue gas purification system that can effectively process flue gas under multiple working conditions. The flue gas generated under various operating conditions is returned to the purification treatment system composed of an accumulation tower and stripping tower including a plurality of independent activated carbon absorption units or unit groups through the flue gas return pipe, and the flue gas generated under each working condition is independently transferred By allowing the activated carbon absorption unit or unit group to process, the activated carbon that has absorbed contaminants in the activated carbon absorption unit or unit group proceeds with the removal and activation of the activated carbon through one stripping tower, and then returns to each activated carbon absorption unit or unit group. Make sure to use it cyclically. The purification treatment system provided by the present application independently treats the flue gas generated under each working condition, so that the smoothness of the flue gas under each working condition is not affected, so that the emission standard is different, and the operating parameters of each working condition flue gas to be different from each other and at the same time improve the utilization rate and work efficiency of the stripping tower.

Description

Flue gas concentration independent purification treatment system under multiple working conditions and control method thereof

The present invention relates to an activated carbon flue gas purification system and a control method thereof, and more particularly, to a purification system for treating flue gas under multiple working conditions with activated carbon and a control method thereof, and belongs to the bar gas purification technology field.

Although steel companies are the holding companies of the overall national economy, they make important contributions to economic development and at the same time have serious air pollution problems. In the steel company has a number of processes, for example, when sintered, pellets palletizing, coking, iron, steel and steel-rolling, etc. there is discharged the flue gas in the process, the flue gas discharged from time to process a large amount of particulates, SO ₂ and NO _X contaminants, etc. When polluting flu gas is released into the atmosphere, it not only pollutes the environment but also threatens human health. To this end, steel companies usually use activated carbon flue gas purification technology, that is, a flue gas purification device is put into a flue gas purifier with a material having an absorption function (eg, activated carbon) to absorb flu gas, thereby purifying flu gas emitted from every process. to realize

The existing activated carbon flue gas purification technology of steel companies applies the activated carbon flue gas purification system shown in FIG. tower (吸收塔), stripping tower (脫去塔) for activating contaminated activated carbon and discharging activated activated carbon, _{antacid subsystem (制酸) for recycling pollutants SO 2} and NO _X (not shown); and two activated carbon conveyors. When the system is in operation, the activated carbon conveyed by the first conveyor enters the absorption tower through the material supply device to form an activated carbon material layer in the absorption tower, and at the same time, the raw gas containing _{contaminants SO 2} and NO _{X is continuously absorbed} By entering the tower and entering the activated carbon material layer further, SO ₂ and NO _X in the raw gas are absorbed by the activated carbon and discharged as a clean gas. The material discharging device of the absorption tower continuously operates _{to discharge the contaminated activated carbon enriched with SO 2} and NO _X in the absorption tower, and then is returned to the stripping tower by the second conveyor. As the contaminated activated carbon conveyed by the second conveyor enters the stripping tower through the material supply device, _{contaminants such as SO 2} and NO _X are precipitated from the contaminated activated carbon to become activated activated carbon. The material discharging device discharges the activated carbon in the stripping tower and returns it to the absorption tower by the first conveyor for recycling.

One application method of the activated carbon flue gas purification system shown in FIG. 1 is that a company installs a set of absorption towers and a set of stripping towers in each flue gas discharge process, and each pair of absorption towers and stripping towers operate simultaneously. It is to complete the purification work for the polluted flu gas generated in each process of the company. Since the scale of each process of a steel company and the amount of flue gas generated are different, in order to achieve the most desirable flu gas purification effect, it is necessary to install a flue gas purifier that matches the scale in processes of different sizes. There are many types of gas purifiers. If an independent activated carbon stripping tower is arranged for each flue gas purification device, the number of installed activated carbon stripping towers in the steel industry becomes too large, which complicates the overall structure of the flue gas purification system in the steel industry, and the flu gas generated in each process is reduced. If it is treated alone, the operating efficiency of the flue gas purification system is lowered, and when the stripping tower is administered in large quantities, it not only wastes facility resources but also increases the management difficulty of the company. Therefore, how to provide a flue gas purification system capable of effectively treating flue gas has become an urgent problem to be solved in this field.

In the existing technology, there is a case of merging the flue gas generated in various processes and then performing purification treatment through an activated carbon absorption tower. This method has the following drawbacks. (1) increasing the processing load of the absorption tower by merging the flue gases of several processes because the content of pollutants in the flue gas generated in each process is different, and then mixing the flue gas with a low pollutant content to increase the pollutant content; (2) If the flue gas of different working conditions is simply concentrated on one end purification absorber, the flow fields will interfere with each other, affecting the discharge uniqueness of the main process, and at the same time, the production system of each working condition will be reduced. Differently, simply concentrating the flue gas affects the production stability of the main process or the stable operation and safety of the end purification device; (3) The emission standards for flue gas generated from various processes are different in countries and industries. For example, the flue gas emission standard in the coking process has a sulfur dioxide content ^{lower than 30mg/Nm 3} and a nitrogen oxide content of 150mg/Nm. ³ , but the emission standard from the sintering process is that the sulfur dioxide content is ^{lower than 180 mg/Nm 3} and the nitrogen oxide content is ^{lower than 300 mg/Nm 3} , and the ultra-low emission standard is the sulfur dioxide content ^{lower than 35 mg/Nm 3} and the nitrogen oxide content is lower than 35 mg/Nm 3 The content was required to be lower than 50 mg/Nm ^{3 .} Therefore, the emission standard for discharging pollutants of flue gas after flu gas generated in different processes is treated through an activated carbon absorption tower is different. After treatment, the content of pollutants in the exhausted flue gas is the same, and if all processes discharge to the lowest standard of the flue gas emission standard, it is self-evident to pollute the air and does not meet the industry standard; If all processes discharge to the highest standard among flu gas emission standards, the operating cost will increase significantly.

For problems such as large input of the flue gas purification treatment system and low efficiency in the existing technology, the present invention provides a flue gas purification system capable of effectively treating flu gas in multiple processes. Flue gas generated under various working conditions is returned to a purification treatment system including an accumulation tower and a stripping tower through a flue gas return pipe, but the flue gas generated under each working condition is independently absorbed by activated carbon treated through a unit or group of units, and then the treated flue gas is discharged; Activated carbon, which has absorbed contaminants in a plurality of activated carbon absorption units or unit groups, is removed and activated through one stripping tower, and then is returned to each activated carbon absorption unit or unit group for recycling. The flue gas intensive independent purification treatment system of multiple working conditions provided by the present invention treats the flue gas generated in each working condition and then uniformly strips the activated carbon to significantly reduce the input of the stripping tower and save equipment resources, It lowers the management difficulty of the company and at the same time improves the utilization rate and work efficiency of the stripping tower.

According to a first embodiment according to the present invention, there is provided a flue gas intensive independent purification treatment system under multiple operation conditions.

The flue gas concentration independent purification treatment system under multiple working conditions includes an accumulation tower, a stripping tower, a first activated carbon conveying facility, a second activated carbon conveying facility, and a flue gas conveying pipe. The integrated tower includes a plurality of independent activated carbon absorption units or groups of units installed in parallel. Each independent activated carbon absorption unit or group of units is provided with a material inlet at the upper end and a material outlet at the lower end. The material outlets of all activated carbon absorption units or unit groups are connected to the material inlets of the stripping tower through the first activated carbon conveying equipment. The material outlet of the stripping tower is connected to the material inlet of each activated carbon absorption unit or unit group through the second activated carbon conveying device. Among the flue gases of multiple operating conditions, the flue gas generated in each working condition is each independently connected to the gas inlet of one or a plurality of independent activated carbon absorption units or unit groups through a flue gas conveying pipe.

Preferably, the system further comprises an exhaust pipe, a flue. An exhaust pipe is connected to the gas outlet of each activated carbon absorption unit or unit group. The exhaust pipe is connected to the flue.

Preferably, the exhaust pipes connected to the gas outlets of all activated carbon absorption units or unit groups are merged and then connected to the flue to discharge uniformly.

Preferably, the exhaust pipe connected to the gas outlet of one or a plurality of independent activated carbon absorption units or unit groups is independently connected to one communication and discharged independently.

In the present invention, the integrated tower of this system includes n independent activated carbon absorption units or unit groups, generates flue gas under m working conditions, and each of the flue gas generated under each working condition among flu gases under m working conditions. independently connected to the gas inlets of h independent activated carbon absorption units or unit groups through one flue gas conveying pipe, where n is 2 to 10, preferably 3 to 6, 2≤m≤n, and 1≤h ? (n-m+1).

Preferably, the exhaust pipes connected to the gas outlets of the n independent activated carbon absorption units or unit groups are connected to the j ports, and 1≤j≤n.

Preferably, n independent activated carbon absorption units or unit groups are closely installed, or n independent activated carbon absorption units or unit groups are spaced apart from each other, and preferably, the gap between adjacent activated carbon absorption units or unit groups is 10 to 5000 cm, preferably 20 to 3000 cm, more preferably 50 to 2000 cm.

Preferably, the integrated tower of this system comprises three or four independent activated carbon absorption units or groups of units. Flue gas is generated under three working conditions: A working condition, B working condition, and C working condition. The flue gas generated under the A working condition is connected to the gas inlet of one independent activated carbon absorption unit or unit group through the first flue gas conveying pipe. The flue gas generated in the B working condition is connected to the gas inlet of one or two independent activated carbon absorption units or unit groups through a second flue gas return pipe. The flue gas generated in the C working condition is connected to the gas inlet of one independent activated carbon absorption unit or unit group through the third flue gas return pipe. An exhaust pipe connected to one activated carbon absorption unit or unit group that treats flu gas generated under the A working condition is connected to one flue. The exhaust pipe connected to one or two activated carbon absorption units or unit groups for treating flu gas generated under the B working condition is connected to one flue. C The exhaust pipe connected to one activated carbon absorption unit or unit group for treating flu gas generated in the working condition is connected to one flue.

Preferably, the first activated carbon conveying equipment and the second activated carbon conveying equipment are belt-type conveying devices.

Preferably, the first activated carbon conveying facility and the second activated carbon conveying facility are all conveyors of "Z" type or reverse "Z" type, or the first activated carbon conveying facility and the second activated carbon conveying facility are each composed of several conveying devices. .

Preferably, the activated carbon absorption unit or unit group is each independently a single stage activated carbon absorption unit or unit group or a multistage activated carbon absorption unit or unit group.

_{Preferably, the exhaust pipe (L times} ) connected with the gas outlet of 1-n activated carbon absorption units or unit group in the n activated carbon absorption units or unit group is connected to the two-stage absorption tower and then the gas outlet of the two-stage absorption tower is connected to the two-stage absorption tower. again connected to the duct.

Preferably, the system further comprises a material feeding device and a material discharging device. One material feeder is installed at the upper end of each activated carbon absorption unit or group of units. The second activated carbon conveying equipment is connected to the material inlet of each activated carbon absorption unit or group of units through one independent material feeding device. One material discharge device is installed at the material discharge port of each activated carbon absorption unit or group of units. The material discharge port of the activated carbon absorption unit or unit group is connected to the first activated carbon conveying equipment through the material discharge device.

According to the second aspect provided by the present invention, there is provided a flue gas concentration independent purification treatment method under multiple operation conditions.

The flue gas intensive independent purification treatment method under multiple operation conditions or the method using the system described in the first embodiment includes the following steps.

1) installing n activated carbon absorption units or unit groups and one stripping tower in the integration tower in the flue gas treatment system, and installing n activated carbon absorption units or unit groups in parallel independently of each other;

2) Flue gas is generated in m working conditions and the flue gas generated in each working condition is transported to h activated carbon absorption units or unit groups through the flue gas conveying pipe, and the activated carbon absorption units or unit groups are connected to each other. performing absorption treatment on the flue gas returned by the pipe and discharging the flue gas treated by the activated carbon absorption unit or unit group from the gas outlet of the activated carbon absorption unit or unit group;

3) After absorbing flu gas in each activated carbon absorption unit or unit group, the activated carbon is returned from the material outlet to the stripping tower through the first activated carbon conveying facility, and the absorbed activated carbon is removed and activated in the stripping tower, and then removed discharging from the material outlet of the giant tower and returning it to the material inlet of each activated carbon absorption unit or unit group through the second activated carbon conveying equipment;

Here, n is 2 to 10, preferably 3 to 6, 2≤m≤n, and 1≤h≤(n-m+1).

Preferably, the treated flue gas discharged from the gas outlets of the n activated carbon absorption units or unit groups is discharged through j communication units 3, but 1≤j≤n.

Preferably, step 3) specifically includes h activated carbon absorption units or unit groups to process flue gas under one working condition, the content of contaminants in the flue gas generated under this working condition, and the amount of flue gas generated under this working condition. By detecting the flow rate, the flow rate of the contaminants in the flue gas in which this working condition has occurred is obtained.

Preferably, the flow rate of the activated carbon in the activated carbon absorption unit or unit group for processing the flue gas generated under this working condition is determined based on the flow rate of the pollutants in the flue gas generated under this working condition.

Preferably, based on the flue gas flow rate and the content of contaminants in the flue gas, the flow rate of the contaminants in the flue gas is calculated according to the following equation,

where Q _{si is the flow rate of contaminant SO 2} in the flue gas generated under i working condition, and the unit is kg/h;

C _{si is the content of contaminant SO 2} in the flue gas generated under i working condition, the unit is mg/Nm ³ ;

Q _{Ni is the flow rate of pollutant NO X} in flue gas generated under i working condition, unit is kg/h;

C _{Ni is the content of pollutant NO X} in the flue gas generated under i working condition, the unit is mg/Nm ³ ;

V _i is the flue gas flow rate generated under i working condition, in units of Nm ³ /h;

i is a sequence number of working conditions, i = 1 to m.

Preferably, based on the flow rate of contaminants in the flue gas and determining the flow rate of activated carbon in each activated carbon absorption unit or unit group that processes the flue gas generated in this working condition according to the following equation,

where Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group that treats the flue gas generated under i working condition, and the unit is kg/h;

h _i is the number of activated carbon absorption units or unit groups for processing flu gas generated under i working condition;

K ₁ generally takes 15-21 as a constant;

K ₂ is a constant and generally takes 3-4.

In the present invention, the flow rate of activated carbon in the stripping tower is obtained according to the following formula,

where Q _x is the flow rate of activated carbon in the stripping tower, in kg/h;

Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group that treats the flue gas generated under i working condition, and the unit is kg/h;

Q is the flow rate _correction of the activated carbon supplement separately in deionized geotap, the unit kg / h and;

h _i is the number of activated carbon absorption units or unit groups for processing flu gas generated under i working condition;

i is a sequence number of working conditions, i=1 to m.

Preferably, based on the flow rate of each activated carbon absorption unit or unit group that processes the flu gas generated under the i working condition, the activated carbon is conveyed into each activated carbon absorption unit or unit group treated at i working condition by the second activated carbon conveying facility. Control the flow to be Q _xi.

Preferably, each activated carbon absorption unit that processes the flue gas generated under i working condition or each activated carbon absorption unit that processes the flue gas of this working condition based on the flow rate of activated carbon in the unit group, the material supply device and material discharge of each activated carbon absorption unit or unit group that treats the flue gas of this working condition Determine the flow rate of the device.

As a preferred embodiment, the flow rate of each activated carbon absorption unit or unit group for processing the flue gas generated under the i working condition is determined according to the following equation, but the flow rate of the material supply device and material discharge device,

Q _{i base} = Q _{i times} = Q _xi ×j;

where Q _i is the flow rate of each activated carbon absorption unit or a material supply device of a unit group that processes the flue gas generated under i working condition, and the unit is kg/h;

Q _{i times} is the flow rate of each activated carbon absorption unit or unit group's material discharge device that treats the flue gas generated under i working condition, the unit is kg/h;

Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group that treats the flue gas generated under i working condition, and the unit is kg/h;

j is a control constant and j is 0.8 to 1.2, preferably 0.9 to 1.1, and more preferably 0.95 to 1.0.

In the present invention, the activated carbon absorption unit or unit group may also be referred to as an activated carbon absorption unit or an activated carbon absorption unit group. The activated carbon absorption unit (or group of activated carbon absorption units) is a complete activated carbon absorption facility, and the function is similar to one complete activated carbon absorption tower in the prior art. In the integrated tower, a plurality of independent activated carbon absorption units or unit groups are installed in parallel to realize a concentration of a plurality of independent activated carbon absorption units, which is similar to installing a plurality of activated carbon absorption towers in parallel. However, the integrated tower of the present invention includes a plurality of independent activated carbon absorption units or unit groups, so space utilization is high and cost is saved, and at the same time, a plurality of activated carbon absorption units or unit groups are closely installed, and the absorption of activated carbon proceeds under high temperature conditions. The design of the integration tower reduces the loss of heat and improves the efficiency of the activated carbon absorption and treatment of flue gas.

Preferably, the stripping system comprises the activated carbon stripping tower, a material supply device for controlling the flow rate of contaminated activated carbon entering the stripping tower, a material discharge device for discharging the activated activated carbon after being subjected to an activation treatment in the stripping tower, the material A sorting device for sorting the activated carbon emitted by the discharging device, an activated activated carbon warehouse for collecting the activated activated carbon obtained after passing through the sorting device, and installed between the outlet end of the flue gas purification device corresponding to each process and the material supply device and a main activated carbon warehouse for collecting the contaminated activated carbon emitted by the flue gas purification device in each process, a belt scale installed between the main activated carbon warehouse and the material supply device and conveying the contaminated activated carbon in the main activated carbon warehouse to the stripping tower, and Includes a new activated carbon replenisher installed above the main activated carbon warehouse. The new activated carbon replenishment device replenishes the new activated carbon into the main activated carbon warehouse, that is, separately replenishes the activated carbon into the stripping tower.

In the present invention, one or a plurality of activated carbon absorption units or unit groups are installed independently for each flue gas discharge working condition, and the contaminated activated carbon is concentrated in the activated carbon absorption unit or unit group for processing flu gas of a plurality of working conditions One central stripping tower for processing is installed so as to correspond to some or all of the absorption towers within the entire plant range, thereby providing at least one pair of correspondences between the stripping tower and the activated carbon absorption unit or group of units.

In addition, the flow rate of raw gas entering the activated carbon absorption unit or unit group, the content of contaminants in the raw gas, and the circulation flow rate of the activated carbon in the absorption tower are major factors affecting the flue gas purification effect, for example, the When the flow rate is evidenced and/or the content of contaminants in the raw gas increases, the circulating flow rate of the activated carbon in the activated carbon absorption unit or unit group must simultaneously and quantitatively increase to ensure the flue gas purification effect, otherwise the activated carbon has already It is saturated and may cause a phenomenon that some contaminants in raw gas are not absorbed, thereby reducing the purification effect. Therefore, the present invention is based on each activated carbon absorption unit or unit group processing the flue gas of one working condition by detecting the content of contaminants in the flue gas generated under this working condition and the flow rate of the flue gas generated under this working condition. obtaining the content of contaminants in the flue gas generated under this working condition; The flow rate of the activated carbon in the activated carbon absorption unit or unit group for processing the flue gas generated under this working condition is determined based on the flow rate of contaminants in the flue gas generated under this working condition. The relationship between factors such as the circulation flow rate of activated carbon in the absorption tower and the flow rate of raw gas is parallelized.

Then, the stripping tower intensively performs activation treatment on the contaminated activated carbon discharged from the plurality of activated carbon absorption units or unit groups, and the sizes of the plurality of activated carbon absorption units or unit groups are different, respectively, and the material discharge rate of the contaminated activated carbon is different. The size of the activated carbon is also different for each, and the amount of activated carbon output by the absorption towers of different processes is different due to factors such as equipment failure and adjustment of production plans because the contaminated activated carbon treated by the stripping tower is derived from an activated carbon absorption unit or unit group installed in a different process. Since stability also oscillates, each activated carbon absorption unit that processes the flue gas generated under the i working condition or the activated carbon absorption unit that processes the flue gas of this working condition based on the flow rate of activated carbon in the unit group or the material supply device of the unit group By determining the flow rate of the material discharging device and the flow rate of the activated carbon in the stripping tower, the stripping tower controls the treatment capacity of the contaminated activated carbon and the equilibrium of the discharge amount of the activated carbon in the plurality of absorption towers.

In the present invention, the purification treatment system simultaneously treats flue gas generated under multiple operation conditions, the purification treatment system including a plurality of activated carbon absorption units or unit groups and one stripping tower, and a plurality of activated carbon absorption tower units or units The group and one stripping tower are installed in the same area, and a plurality of activated carbon absorption units or the transportation of activated carbon between the unit group and the stripping tower is realized by two types of activated carbon conveying equipment (the first activated carbon conveying facility and the second activated carbon conveying facility). Here, the first activated carbon conveying facility conveys the activated carbon that has absorbed the contaminants emitted by a plurality of activated carbon absorption units or unit groups to the stripping tower, and the second activated carbon conveying facility returns the activated carbon after stripping (activated carbon absorption unit or unit group with the activated carbon returned from the group). (including newly supplemented activated carbon) can be returned to each activated carbon absorption unit or unit group to complete the overall transportation and conveyance of activated carbon through a two-pronged activated carbon conveying facility. In this way, the defect in the case of distributing the activated carbon absorption unit or unit group is solved, and in the existing technology, the activated carbon absorption unit or unit group is dispersedly arranged and the activated carbon after removal is returned to each activated carbon absorption unit or unit group one by one. The distribution of steel enterprises is relatively wide, the site area is large, the transport distance is relatively long, the use of activated carbon is long-term and continuous, the cost of transporting the activated carbon is relatively high, and the professional transport route must be designed, which wastes resources. In addition, in the existing technology, one activated carbon absorption tower changed the traditional design that matches one stripping tower, and one stripping tower of the present invention is matched with a plurality of activated carbon absorption units or unit groups to reduce the input of stripping tower At the same time, it improves the utilization rate and work efficiency of the stripping tower.

In the present invention, the flue gas generated under multiple operating conditions is conveyed to the activated carbon absorption unit or unit group of the purification treatment system through a flue gas conveying pipe, where the flue gas generated under each operating condition is passed through one independent flue gas conveying pipe It is returned to one or a plurality of independent activated carbon absorption units or groups of units, in other words, one or a plurality of activated carbon absorption units or groups of units processes flue gas generated in one working condition, and the flue gas generated in each working condition is independent is processed with The design in which the flue gas is treated independently smoothly adapts to the problem of different pollutants content of flue gas generated in each process and different emission standards. For example, in the flue gas generated in the coking process, the content of sulfur dioxide is 100 mg/Nm ³ left and right, and the content of nitrogen oxide is 300-1500 mg/Nm ³ ; Among flue gas generated in the sintering process the amount of sulfur dioxide is 400-2000mg / Nm ^3, the amount of NOx 300-450mg / Nm ^3, and; The content of sulfur dioxide is 80-150 mg/Nm ³ in the flue gas generated in the ironmaking process, and the content of nitrogen oxide is 50-100 mg/Nm ³ . However, as the emission standards for flu gas generated in different countries and industries are different, the sulfur dioxide content in the flue gas discharged from the coking station ^{is lower than 30 mg/Nm 3} left and right, and the nitrogen oxide content is less than ^{150 mg/Nm 3} In the flue gas discharged from the sintering process, the sulfur dioxide content is ^{lower than 180 mg/Nm 3} and the nitrogen oxide content is lower than 300 mg/Nm ³ , and in the current sinter flu gas ultra-low emission standard, the sulfur dioxide content is 35 mg/Nm 3 It ^{was lower than Nm 3} and the nitrogen oxide content was lower than 50 mg/Nm ³ , and the sulfur dioxide content in the flue gas discharged from the steelmaking process was ^{lower than 100 mg/Nm 3} and the nitrogen oxide content was required to be lower than ^{300 mg/Nm 3 .} If the absorption treatment is performed after directly mixing (or merging) the flue gas of all processes, the throughput of the absorption tower is unconsciously increased. For example, the content of sulfur dioxide in the flue gas generated in the coking process is low, the sulfur dioxide content in the flue gas generated in the sintering process is high, and after mixing, the sulfur dioxide in the flue gas in the coking process increases. Increase the throughput of processing flue gas content. In addition, the content of each component (eg, sulfur dioxide and nitrogen oxide) among the flue gases generated in different processes is different, and the focus of treating the flue gas generated in different processes is different. For example, in the caulking method, the sintering method, and the iron making method, the flue gas generated in any one method has to go through desulfurization and denitrification treatment, so the content of pollutants in the flue gas generated in each method is the emission standard prescribed by the country. It was made possible to discharge only when it was lower than that. However, due to different factors such as raw material, environment, and treatment purpose of the method, the content of pollutants in the flue gas generated by the caulking method, the sintering method, and the iron making method is different. The standards were also different.

Comparing the coking method and the sintering method, in the flue gas generated in the coking process, the sulfur dioxide content is relatively low and the nitrogen oxide content is relatively high, so the focus in the absorption treatment process is to treat the nitrogen oxide, and it is injected into the activated carbon absorption unit or unit group The amount of ammonia gas to be used is relatively large, and in the flue gas generated in the sintering process, the sulfur dioxide content is relatively high and the nitrogen oxide content is relatively low. Alternatively, the amount of ammonia gas to be injected into the unit group is relatively small.

In the flue gas generated from the ironmaking process, both the sulfur dioxide content and the nitrogen oxide content are relatively low, so this type of flue gas in the absorption treatment process can be treated relatively easily compared to the flue gas generated from coking and sintering. If over-denitrification treatment is carried out, it can be discharged immediately, and if a part of flue gas is mixed with flue gas generated from coking and/or sintering and treated again, the throughput of the purification absorption system is increased.

The present invention advances the traditional technology of mixing flue gases generated under different operating conditions in the existing technology and processing them together through an activated carbon absorption tower, so that the flue gas generated under different operating conditions is absorbed through an independent activated carbon absorption unit or unit group By using different absorption treatment methods appropriately based on the characteristics of the flue gas generated in each different working condition, the flue gas generated in each process can be effectively treated so that the treated flue gas can fully reach the prescribed emission standard. However, by treating the flue gas using the most economical technical solution, the treatment efficiency is high and the cost is saved.

Since flue gas is generated under various working conditions, the composition and temperature of various flue gases are all different. to waste resources. In the purification treatment system of the present invention, the integrated tower includes a plurality of activated carbon absorption units or unit groups, wherein the flue gas generated in each operating condition is treated by one or a plurality of independent activated carbon absorption units or unit groups, and the flue gas generated in each operating condition is treated by one or more independent activated carbon absorption units or unit groups. Based on the characteristics of the gas, the efficiency of the overall absorption process can be improved by selecting the most suitable absorption environment by selecting and adjusting the construction method conditions of the activated carbon absorption unit or unit group that treats the flue gas of this working condition. For example, the residence time of the activated carbon in the activated carbon absorption unit or unit group that treats this flue gas based on specific actual conditions such as the type of pollutants in the flue gas, the content of various components, and the temperature of the flue gas (material of activated carbon) By controlling the supply rate and material discharge rate) and absorption treatment temperature (realized by controlling the air inlet temperature of the existing flue gas, the thermostat, etc.), All can use the most practical and effective absorption treatment method to remove contaminants, thereby improving treatment efficiency and lowering treatment costs.

In the present invention, one, two, or a plurality of activated carbon absorption units or unit groups are smoothly selected according to the size of the amount of flue gas generated under the working conditions in the actual situation, and the flue gas generated in this working condition is treated do. If the amount of flue gas generated under any one working condition is relatively small and can be sufficiently treated with one activated carbon absorption unit or unit group, select one activated carbon absorption unit or unit group in the accumulation tower to process the flue gas under this working condition If the amount of flue gas under working conditions is small, on the premise that the treatment effect is ensured, the activated carbon shortens the residence time in the activated carbon absorption unit or unit group, thereby improving the absorption treatment effect. If the amount of flue gas generated in any one working condition is relatively large, according to the actual demand, two or a plurality of activated carbon absorption units or unit groups in the integrated tower are selected to process the flue gas under this working condition, and if the flue gas of the working condition is When the amount of gas is large, the activated carbon increases the residence time in the activated carbon absorption unit or unit group, thereby securing the absorption treatment effect.

Preferably, if the parameters, such as composition, content, temperature, etc. of the flue gas generated under two (or multiple) working conditions are similar, that is, if the flue gas generated under the two or multiple working conditions are relatively similar, based on analysis and judgment, Flue gas generated under tangible working conditions can be combined treatment. In other words, the flue gas generated under this type of working condition is merged and then returned to one or a plurality of activated carbon absorption units or unit groups in the accumulation tower.

In the present invention, n independent activated carbon absorption units or unit groups treat flu gas generated under m working conditions, and the quantity of working conditions for generating flu gas may be the same as the quantity of activated carbon absorption units or unit groups, or activated carbon It may be less than the number of absorption units or unit groups. As a preferred solution of the present invention, the quantity of working conditions for generating flu gas may be greater than the quantity of activated carbon absorption units or unit groups. Send it back to a unit or group of units for processing.

In addition, the present invention independently processes the flue gas generated in different working conditions to concentrate the flue gas under different working conditions in one area and input it into an independent end purification absorption device to prevent the flow fields from interfering with each other and discharge the main method By withholding the uniqueness, the production stability of the main method and the stable operation and safety of the end purification device are ensured.

In the present invention, the integration tower includes a plurality of activated carbon absorption units or unit groups and is installed near the stripping tower, and each activated carbon absorption unit or unit group independently processes flue gas generated under one working condition and independently purifies it. proceed with processing. Since each activated carbon absorption unit or unit group operates independently, a plurality of activated carbon absorption units or unit groups are installed in parallel.

In the present invention, a plurality of activated carbons are absorbed based on the characteristics of the contaminant content in the flue gas generated under different operating conditions, and the contaminant content of the gas discharged to the activated carbon absorption unit or unit group exhaust port treated by the activated carbon absorption unit or unit group. The gas discharged to the unit or unit group exhaust port may be discharged independently or may be discharged after being merged.

In the present invention, uniformly discharged means that the exhaust pipes connected to the gas outlets of all the plurality of activated carbon absorption units or unit groups are merged and then connected together with the communication and discharged by one communication.

In the present invention, independently discharged means that the exhaust pipe connected to the gas outlet of each activated carbon absorption unit or unit group is independently connected to one communication, in other words, one communication is one activated carbon absorption unit or unit group. It means that it corresponds to the exhaust pipe connected to the gas outlet. Alternatively, the exhaust pipe connected to the gas outlet of the activated carbon absorption unit or unit group that processes the flue gas generated in each working condition is independently connected to one flue, in other words, one flue corresponds to the flue gas in one working condition .

In the present invention, exhaust pipes of some activated carbon absorption units or unit groups in a plurality of activated carbon absorption units or unit groups are merged into the same communication and discharged, and the exhaust pipes of other activated carbon absorption units or unit groups are connected to another communication communication. It may be used to discharge after merging, or to independently discharge by connecting the exhaust pipe of the remaining activated carbon absorption unit or unit group with one flue.

In the present invention, the plurality of activated carbon absorption units or unit groups of the integrated tower independently treat the flue gas generated under each working condition, and then the discharged gas is treated by each activated carbon absorption unit or unit group according to the actual emission situation. It may be to discharge the exhausted flue gas through one independent flue, or it may be to discharge the flue gas treated by one or a plurality of activated carbon absorption units or unit groups that process flu gas of each working condition through one flue. And it may be to discharge the flue gas treated by all activated carbon absorption units or unit groups through one flue. Generally speaking, the emission of flue gas treated by the activated carbon absorption unit or group of units can be smoothly set based on the actual situation.

In the present invention, the activated carbon absorption unit or unit group may be a single-stage absorption tower or a multi-stage absorption tower. In addition, each activated carbon absorption unit or unit group in the plurality of activated carbon absorption units or unit groups is not limited and may be independent of each other. In other words, the plurality of activated carbon absorption units or unit groups may all be composed of a single-stage absorption tower, all may be composed of a multi-stage absorption tower, and may be composed of some single-stage absorption towers and some multi-stage absorption towers. The activated carbon absorption unit or group of units can be set based on the situation, such as the quantity of pollutant content in the flue gas generated under specific working conditions using a single-stage absorption tower or a multi-stage absorption tower, and the flue gas emission standard for this working condition. The structures of the single-stage absorption tower and the multi-stage absorption tower may be those conventionally installed in the prior art.

In the present invention, the material feeding device controls the material feeding amount and the material feeding rate of the activated carbon absorbing unit or unit group, and the material discharging device controlling the material discharging and material discharging speed of the activated carbon absorbing unit or unit group. The material feed rate, material feed rate, material discharge rate and material discharge rate are set by the corresponding activated carbon absorption unit or unit group based on the content of pollutants in the flue gas generated under the working conditions. The material feeding amount, material feeding rate, material discharging rate and material discharging rate of each activated carbon absorption unit or group of units are all adapted to each other with the specific situation in which it treats the flue gas of working conditions. This is also the advantage brought about by the independent treatment of flue gases from different operating conditions.

In the present invention, each activated carbon absorption unit or unit group is an independent absorption processing unit, and each activated carbon absorption unit or unit group treats flue gas under one working condition by using the technical solution of the present invention. By detecting the content of contaminants in the flue gas generated under this working condition and the flow rate of the flue gas generated under this working condition according to Based on the flow rate of the pollutants in the generated flue gas, it is possible to determine the activated carbon in the activated carbon absorption unit or unit group for treating the flue gas generated under this working condition. Each activated carbon absorption unit or unit group has the characteristic of treating flue gas generated under a specific working condition, and based on the emission standard of the flue gas under this working condition, the specific activated carbon flow rate (or undefined) of each activated carbon absorption unit or unit group in each activated carbon absorption unit or unit group called loading speed). This design of the present invention is highly adaptable and highly usable. If the specified working conditions, the characteristics of the flue gas generated under these working conditions, the emission standards required by these working conditions, and the specified activated carbon absorption treatment method are established and the flue gas generated under each working condition is treated independently, each emission standard At the same time, it satisfies the requirements of the activated carbon absorption unit or unit group by using the most suitable activated carbon flow rate through calculation to save cost, reduce waste of resources and energy, and put the stripping tower throughput in the most suitable state.

In the present invention, by accurately calculating the flow rate of activated carbon in the stripping tower based on the flow rate of activated carbon in all activated carbon absorption units or unit groups, the stripping speed of activated carbon is scientifically controlled so that the overall purification treatment system is synchronous with stripping and absorption. so that the stripping tower stripping is so slow that the activated carbon absorption unit or unit group waits for the stripping tower to strip the activated carbon; The stripping tower does not have to wait for the activated carbon in the activated carbon absorption unit or unit group to occur because the stripping tower is too fast. Through scientific calculations, it is possible to ensure the normal and organic operation of the stripping tower and the absorption tower, and to realize scientific management.

In the present invention, based on the flow rate of the activated carbon in the activated carbon absorption unit or unit group for processing flu gas generated under specified working conditions, the flow rate of the material supply device of the activated carbon absorption unit or unit group and the flow rate of the material discharge device are accurately determined can be calculated.

In addition, in the actual production method, the amount of activated carbon to be supplemented in this system can be obtained through experience or detection after the overall purification treatment system is operated for a certain period of time, in other words, the flow rate of activated carbon supplemented separately into the stripping tower Activated carbon that can be and separately replenished (referred to as fresh activated carbon) can be added to the stripping tower from the material inlet of the stripping tower according to the flow rate of the separately supplemented activated carbon into the stripping tower obtained by experience or calculation.

In the present invention, K ₁ , K ₂ are constants, which may be obtained depending on the treatment capability of activated carbon to absorb and treat sulfides and nitrogen oxides, or may be established by experience. j is the control constant of the material feeding device and the material discharging device, which can be obtained by judging by experience.

In the present invention, the integrated tower includes a plurality of independent activated carbon absorption units or unit groups, and the specifications and sizes of the activated carbon absorption units or unit groups in the plurality of activated carbon absorption units or unit groups may be the same or different; In the actual construction method, it is possible to design the standard of an activated carbon absorption unit or unit group that processes the flue gas in this working condition according to the characteristics of the flue gas generated in the working condition. In the plurality of activated carbon absorption units or unit groups, the number of layers of activated carbon in the activated carbon absorption unit or unit group, the thickness of the activated carbon, the size of the gas inlet and the exhaust port, the positions of the gas inlet and the exhaust port, etc. can all be set according to actual demand. In the plurality of activated carbon absorption units or unit groups, the height and width of the activated carbon absorption unit or unit group may be the same or different. The cross section of the accumulation tower may be square or circular, and the shape may be determined based on each activated carbon absorption unit or unit group in the accumulation tower. The cross section of the activated carbon absorption unit or unit group may be rectangular, circular, or other shapes.

In the present invention, the fact that n independent activated carbon absorption units or unit groups are closely installed means that all activated carbon absorption units or unit groups are in close contact without a gap between the activated carbon absorption units or unit groups as an overall design, in other words, It means that the outer walls of adjacent activated carbon absorption units or unit groups are in contact with each other, or that adjacent activated carbon absorption units or unit groups use the same side walls in common. The fact that n independent activated carbon absorption units or unit groups are spaced between each other means that each activated carbon absorption unit or unit group is independent of each other. It means that the absorption unit or unit group does not come into contact and a gap is provided between adjacent activated carbon absorption units or unit groups.

In the present invention, the first activated carbon conveying facility and the second activated carbon conveying facility may each have an overall structure or may be a conveying facility composed of a plurality of conveying devices, respectively. In other words, the first activated carbon conveying facility (or the second activated carbon conveying facility) may be driven by one motor, and the overall conveying trajectory forms a “Z” or reverse “Z” type structure, and the first activated carbon conveying facility (or The second activated carbon conveying facility) may also be driven by several motors, each motor drives a single-stage conveying device, and each single-stage conveying device may have a straight or curved structure. In other words, the first activated carbon conveying facility (or the second activated carbon conveying facility) may use any structure in the prior art, and may have an overall structure or an assembly structure.

In the present invention, the activated carbon absorption unit or unit group may use a single-stage activated carbon absorption unit or unit group, or a two-stage or multi-stage activated carbon absorption unit or unit group may be used. In addition, one or a plurality of (or all) activated carbon absorption units or unit groups in the n activated carbon absorption units or unit groups are connected in parallel with the two-stage absorption tower, in other words, the flue gas passes through each activated carbon absorption unit or unit group. Then, the gas discharged from one or more activated carbon absorption units or unit group exhaust ports may be independently or merged and then treated through a two-stage absorption tower (or a two-stage activated carbon absorption tower).

In the present invention, according to the characteristics of the flue gas, flue gas may be treated by an activated carbon absorption unit or group of units and then discharged through the flue. This activated carbon absorption unit or group of units is one-stage activated carbon absorption unit or group of units. Alternatively, a two-stage or multi-stage activated carbon absorption unit or unit group may be used. In addition, the flue gas is treated by the activated carbon absorption unit or unit group, and then the gas discharged from the n activated carbon absorption unit or unit group exhaust is reprocessed through one two-stage absorption tower, respectively, or n activated carbon absorption unit or unit group The gas discharged from one or a plurality of exhaust ports may be reprocessed by a two-stage absorption tower. In addition, the gas discharged from one or more exhaust ports from n activated carbon absorption units or unit groups is reprocessed by the two-stage absorption tower, and the gas discharged from the exhaust ports of the remaining activated carbon absorption units or unit groups is separately absorbed in two stages. It can be reprocessed by the tower.

In the present invention, the activated carbon absorption unit or unit group, the two-stage absorption tower is similar to the activated carbon absorption tower in the prior art, and the internal structure is similar to the activated carbon absorption tower in the existing technology.

In general, the height of the activated carbon absorption unit or unit group in the plurality of activated carbon absorption units or unit groups is 10 to 50 m, preferably 15 to 40 m, and more preferably 18 to 30 m. The length of the cross-sectional area of the activated carbon absorption unit or unit group is 2 to 20 m, preferably 5 to 18 m, more preferably 8 to 15 m, and the width is 1 to 15 m, preferably 3 to 12 m, more preferably The following is 5 to 10 m. Alternatively, the diameter of the cross-sectional area of the activated carbon absorption unit or unit group is 1 to 10 m, preferably 2 to 8 m, and more preferably 3 to 6 m.

Compared with the existing technology, the technical solution of the present invention has the following advantageous technical effects.

1. The purification treatment system simultaneously treats the flue gas generated under multiple working conditions, the purification treatment system including an integration tower and one stripping tower, the integration tower including a plurality of activated carbon absorption units or groups of units, the integration tower and stripping tower The giant tower is installed in the same area, and the transport of activated carbon between the accumulation tower and the stripping tower can complete the transport and transport of the entire activated carbon by the two-pronged activated carbon transport facility.

2. In the technical solution of the present invention, the design for independently processing the flue gas can be smoothly adapted to the problem that the content of pollutants in the flue gas generated in each process is different and the emission standard is different.

3. The present invention effectively treats the flue gas generated in each process by appropriately using different absorption treatment methods according to the characteristics of the flue gas generated in each different working condition so that the treated flue gas completely reaches the prescribed emission standard. In addition, by using the most economical technical solution to achieve flue gas treatment, the treatment efficiency is high and the cost can be saved.

In order to more clearly explain the technical solution of the present application, the drawings to be used in the following embodiments are briefly introduced. Thus, it is obvious that other drawings can be obtained.
1 is a structural schematic diagram of an activated carbon flue gas purification system in the prior art;
Fig. 2 is a structural schematic diagram of a flue gas concentration independent purification treatment system under a multi-tasking condition of the present invention;
3 is a structural schematic diagram (a cross-sectional view taken at position AA in FIG. 1) in which each activated carbon absorption unit or unit group independently discharges in the integrated tower of the present invention;
4 is a structural schematic diagram in which all activated carbon absorption units or unit groups are uniformly discharged in the integrated tower of the present invention;
FIG. 5 is a structural schematic diagram of the use of two activated carbon absorption units or unit groups in the integrated tower of the present invention under one working condition, and the activated carbon absorption units or unit groups independently discharging;
6 is a structural schematic diagram of the use of two activated carbon absorption units or unit groups for one working condition in the integrated tower of the present invention, and the activated carbon absorption unit or unit group independently discharging the flue gas of each operating condition; ego;
7 is a structural schematic diagram of two activated carbon absorption units or unit groups being used for one working condition in the integrated tower of the present invention, and the activated carbon absorption units or unit groups are uniformly discharged;
8 is a flow chart of a method in which flue gas is independently discharged in a flue gas intensive independent purification treatment system of a kind of multiple operation conditions of the present invention;
9 is a flow chart of a method in which flue gas is uniformly discharged in a flue gas intensive independent purification treatment system under a kind of multiple operation conditions of the present invention;
10 shows two activated carbon absorption units or unit groups are used in one working condition in a flue gas intensive independent purification treatment system of a type of multiple operation conditions of the present invention, and the activated carbon absorption unit or unit group independently generates flue gas It is a process flow chart for discharging;
11 is an activated carbon absorption unit that uses two activated carbon absorption units or unit groups in one operation condition in a flue gas concentration independent purification treatment system of a kind of multiple operation conditions of the present invention, and processes the flue gas in each operation condition; or a flow chart of a method in which a unit group independently discharges flu gas;
12 is a flue gas intensive independent purification treatment system of a kind of multiple working conditions of the present invention, using two activated carbon absorption units or unit groups in one working condition, and all activated carbon absorption units or unit groups are uniformly discharged It is a process flow chart;
13 is a flowchart for calculating activated carbon in a method for intensive independent purification of flue gas under a kind of multiple operation conditions of the present invention;
14 is a flowchart for controlling activated carbon in a method for intensive independent purification of flue gas under a kind of multiple operation conditions of the present invention.

According to a first aspect according to the present invention, there is provided a flue gas intensive independent purification treatment system under multiple operation conditions.

The flue gas intensive independent purification treatment system under multiple working conditions consists of an accumulation tower (1), a stripping tower (2), a first activated carbon conveying facility (P1), a second activated carbon conveying facility (P2), and a flue gas conveying pipe (L). include The integration tower 1 includes a plurality of independent activated carbon absorption units or unit groups 101 installed in parallel. Each independent activated carbon absorption unit or unit group 101 is provided with a material inlet 10101 at the upper end and a material outlet 10102 at the lower end. The material outlet 10102 of every activated carbon absorption unit or unit group 101 is connected to the material inlet of the stripping tower 2 through the first activated carbon conveying facility P1. The material outlet of the stripping tower 2 is connected to the material inlet 10101 of each activated carbon absorption unit or unit group 101 through the second activated carbon conveying facility P2. In the flue gas of multiple working conditions, the flue gas generated in each working condition is each independently connected to the gas inlet 10103 of one or a plurality of independent activated carbon absorption units or unit groups 101 through the flue gas conveying pipe L do.

Preferably, the system further comprises an exhaust pipe (L _vessel ) and a flue (3). _{An exhaust pipe (L ship} ) is connected to the gas outlet 10104 of each activated carbon absorption unit or unit group 101. The exhaust pipe (L _ship ) is connected to the communication (3).

_{Preferably, the exhaust pipes (L ships} ) connected to the gas outlets 10104 of all activated carbon absorption units or unit groups 101 are connected to the flue 3 after merging to discharge them uniformly.

_{Preferably, the exhaust pipe (L vessel} ) connected to the gas outlet of one or a plurality of independent activated carbon absorption units or unit group 101 is independently connected to one communication unit 3 and discharged independently.

In the present invention, the integration tower 1 of this system includes n independent activated carbon absorption units or unit groups 101, and generates flue gas under m working conditions, and among the flue gases under m working conditions. The flue gas generated in each working condition is each independently connected to the gas inlet 10103 of the h independent activated carbon absorption units or unit group 101 through one flue gas conveying pipe L; Here, n is 2 to 10, preferably 3 to 6, 2≤m≤n and 1≤h≤(n-m+1).

_{Preferably, the exhaust pipes (L times} ) connected to the gas outlets 10104 of the n independent activated carbon absorption units or unit groups 101 are connected to the j communication units 3; Here, 1≤j≤n.

Preferably, the n independent activated carbon absorption units or unit groups 101 are closely installed, or the n independent activated carbon absorption units or unit groups 101 are spaced apart from each other. Preferably, the interval between the adjacent activated carbon absorption units or unit groups 101 is 10 to 5000 cm, preferably 20 to 3000 cm, more preferably 50 to 2000 cm.

Preferably, the integrated tower (1) of this system comprises three or four independent activated carbon absorption units or groups of units (101). Flue gas is generated in three working conditions: A working condition, B working condition, and C working condition. The flue gas generated under the A working condition is connected to the gas inlet 10103 of one independent activated carbon absorption unit or unit group 101 through the first flue gas conveying pipe La. The flue gas generated in the B operation condition is connected to the gas inlet 10103 of one or two independent activated carbon absorption units or unit groups 101 through the second flue gas conveying pipe Lb. The flue gas generated in the C working condition is connected to the gas inlet 10103 of one independent activated carbon absorption unit or unit group 101 through the third flue gas conveying pipe Lc. _{An exhaust pipe (L ship} ) connected to one activated carbon absorption unit or unit group 101 for processing flu gas generated under the A working condition is connected to one flue (3). _{One or two activated carbon absorption units or an exhaust pipe (L vessel} ) connected to the unit group 101 for processing the flue gas generated in the B working condition are connected to one flue (3). _{An exhaust pipe (L ship} ) connected to one activated carbon absorption unit or unit group 101 for processing flu gas generated in the C working condition is connected to one flue (3).

Preferably, the first activated carbon conveying facility P1 and the second activated carbon conveying facility P2 are belt-type conveying devices.

Preferably, the first activated carbon conveying facility P1 and the second activated carbon conveying facility P2 are “Z” type or reverse “Z” type overall conveyors, or the first activated carbon conveying facility P1 and the second activated carbon conveying facility (P2) is composed of several transport devices, respectively.

Preferably, the activated carbon absorption unit or unit group 101 is each independently a single stage activated carbon absorption unit or unit group or a multistage activated carbon absorption unit or unit group.

_{Preferably, the exhaust pipe (L-fold} ) connected to the gas outlet 10104 of the n activated carbon absorption units or 1 to n activated carbon absorption units or unit group 101 in the unit group 101 is connected to the two-stage absorption tower. The gas outlet of the next two-stage absorption tower is again connected to the communication (3).

Preferably, the system further comprises a material feeding device 4 and a material discharging device 5 . At the upper end of each activated carbon absorption unit or unit group 101, all one material supply device 4 is installed. The second activated carbon conveying equipment P2 is connected to the material inlet 10101 of each activated carbon absorption unit or group of units 101 through one independent material feeder 4 . One material discharging device 5 is installed at the material discharge port 10102 of each activated carbon absorption unit or unit group 101 . The material discharge port of the activated carbon absorption unit or unit group 101 is connected to the first activated carbon conveying equipment P1 through the material discharge device 5 .

In general, in the plurality of activated carbon absorption units or unit groups, the height of the activated carbon absorption units or unit groups is 10 to 50 m, preferably 15 to 40 m, and more preferably 18 to 30 m. The length of the cross section of the activated carbon absorption unit or unit group is 2 to 20 m, preferably 5 to 18 m, more preferably 8 to 15 m, and the width is 1 to 15 m, preferably 3 to 12 m, more preferably 5 to It is 10 m. Alternatively, the diameter of the cross section of the activated carbon absorption unit or group of units is 1 to 10 m, preferably 2 to 8 m, and more preferably 3 to 6 m.

(Example 1)

As shown in FIG. 2, the flue gas concentration independent purification treatment system under multiple operation conditions is an accumulation tower 1, a stripping tower 2, a first activated carbon conveying facility P1, and a second activated carbon conveying facility P2. , and a flue gas conveying pipe (L). The integrated tower 1 includes four independent activated carbon absorption units or unit groups 101 installed in parallel. Each independent activated carbon absorption unit or unit group 101 is provided with a material inlet 10101 at the upper end and a material outlet 10102 at the lower end. The material outlet 10102 of every activated carbon absorption unit or unit group 101 is connected to the material inlet of the stripping tower 2 through the first activated carbon conveying facility P1. The material outlet of the stripping tower 2 is connected to the material inlet 10101 of each activated carbon absorption unit or unit group 101 through the second activated carbon conveying facility P2. The system further comprises a material feeding device 4 and a material discharging device 5 . At the upper end of each activated carbon absorption unit or unit group 101, a single material supplying device 4 is installed, and the second activated carbon conveying device P2 is connected to each activated carbon absorption unit or through a single independent material supplying device 4 It is connected to the material inlet of the unit group (101). One material discharge device (5) is installed at the material discharge port of each activated carbon absorption unit or unit group (101), and the material discharge port of the activated carbon absorption unit or unit group (101) passes through the material discharge device (5) to the first activated carbon It is connected to the transport facility (P1). The flue gas generated in each working condition among the flue gases of multiple working conditions is each independently connected to the gas inlet 10103 of one or a plurality of independent activated carbon absorption units or unit groups 101 through a flue gas conveying pipe L. . The system further includes an exhaust pipe (L _ship ), a flue (3). _{An exhaust pipe (L ship} ) is connected to the gas outlet 10104 of each activated carbon absorption unit or unit group 101. The exhaust pipe (L _ship ) is connected to the communication (3).

(Example 2)

As shown in FIG. 3, the flue gas concentration independent purification treatment system under multiple operation conditions is an accumulation tower (1), a stripping tower (2), a first activated carbon conveying facility (P1), a second activated carbon conveying facility (P2) , and a flue gas conveying pipe (L). The integration tower 1 includes three independent activated carbon absorption units or unit groups 101 installed in parallel. Each independent activated carbon absorption unit or unit group 101 is provided with a material inlet 10101 at the upper end and a material outlet 10102 at the lower end. The material outlet 10102 of every activated carbon absorption unit or unit group 101 is connected to the material inlet of the stripping tower 2 through the first activated carbon conveying facility P1. The material outlet of the stripping tower 2 is connected to the material inlet 10101 of each activated carbon absorption unit or unit group 101 through the second activated carbon conveying facility P2. The system further comprises a material feeding device 4 and a material discharging device 5 . At the upper end of each activated carbon absorption unit or unit group 101, a single material supplying device 4 is installed, and the second activated carbon conveying device P2 is connected to each activated carbon absorption unit or through a single independent material supplying device 4 It is connected to the material inlet of the unit group (101). One material discharge device (5) is installed at the material discharge port of each activated carbon absorption unit or unit group (101), and the material discharge port of the activated carbon absorption unit or unit group (101) passes through the material discharge device (5) to the first activated carbon It is connected to the transport facility (P1). Among the flue gases of the three working conditions, the flue gas generated in each working condition is each independently connected to the gas inlet 10103 of one independent activated carbon absorption unit or unit group 101 through the flue gas conveying pipe L. The system further includes an exhaust pipe (L _ship ), a flue (3). _{An exhaust pipe (L ship} ) is connected to the gas outlet 10104 of each activated carbon absorption unit or unit group 101. Each exhaust pipe (L _ship ) is independently connected to one independent flue (3) and discharged independently.

(Example 3)

As shown in Fig. 4, although overlapping with Embodiment 2, the gas outlets 10104 of the three activated carbon absorption units or unit groups 101 are all connected to the _{exhaust pipe (L-fold).} The three exhaust pipes (L _ship ) are merged and then connected to one flue (3) for unified discharge.

(Example 4)

As shown in FIG. 5, the flue gas concentration independent purification treatment system under multiple operation conditions is an accumulation tower (1), a stripping tower (2), a first activated carbon conveying facility (P1), a second activated carbon conveying facility (P2) , and a flue gas conveying pipe (L). The integrated tower 1 includes four independent activated carbon absorption units or unit groups 101 installed in parallel. Each independent activated carbon absorption unit or unit group 101 is provided with a material inlet 10101 at the upper end and a material outlet 10102 at the lower end. The material outlet 10102 of every activated carbon absorption unit or unit group 101 is connected to the material inlet of the stripping tower 2 through the first activated carbon conveying facility P1. The material outlet of the stripping tower 2 is connected to the material inlet 10101 of each activated carbon absorption unit or unit group 101 through the second activated carbon conveying facility P2. The system further comprises a material feeding device 4 and a material discharging device 5 . At the upper end of each activated carbon absorption unit or unit group 101, one material supplying device 4 is installed, and the second activated carbon conveying device P2 is provided through one independent material supplying device 4 through each activated carbon absorption unit. Or it is connected to the material inlet of the unit group (101). One material discharge device (5) is installed at the material discharge port of each activated carbon absorption unit or unit group (101), and the material discharge port of the activated carbon absorption unit or unit group (101) passes through the material discharge device (5) to the first activated carbon It is connected to the transport facility (P1). Among the flue gases generated in the three working conditions, the flue gas generated in the first working condition (working condition A) is passed through the first flue gas return pipe (La) to one independent activated carbon absorption unit or the gas inlet of the unit group 101 ( 10103) is connected. The flue gas generated in the second working condition (operating condition B) is connected to the gas inlet 10103 of the two independent activated carbon absorption units or unit group 101 through the second flue gas conveying pipe Lb. The flue gas generated in the third working condition (C working condition) is connected to the gas inlet 10103 of one independent activated carbon absorption unit or unit group 101 through the third flue gas conveying pipe Lc. _{An exhaust pipe (L ship} ) connected to one activated carbon absorption unit or unit group 101 for processing the flue gas generated in the first working condition is connected to one flue (3). _{The exhaust pipe (L ship} ) connected to two activated carbon absorption units or unit group 101 for treating the flue gas generated in the second working condition are each independently connected to two independent communication channels 3 . _{An exhaust pipe (L ship} ) connected to one activated carbon absorption unit or unit group 101 for processing the flue gas generated in the third working condition is connected to one flue (3).

(Example 5)

As shown in FIG. 6, although overlapping with Example 4, one activated carbon absorption unit or an exhaust pipe (L- _fold ) connected to the unit group 101 for processing the flue gas generated in the first working condition is one communication (3) is connected. _{The exhaust pipe (L vessel} ) connected to the two activated carbon absorption units or unit group 101 for processing the flue gas generated in the second working condition is merged and then connected to one communication pipe 3 . _{An exhaust pipe (L ship} ) connected to one activated carbon absorption unit or unit group 101 for processing the flue gas generated in the third working condition is connected to one flue (3).

(Example 6)

As shown in Fig. 7, although overlapping with Example 4, one activated carbon absorption unit or an exhaust pipe connected to the unit group 101 for processing the flue gas generated in the first working condition (L _times ), the second operation Exhaust pipe (L _ship ) connected to two activated carbon absorption units or unit group 101 for processing flu gas generated under the condition, one activated carbon absorption unit or unit group 101 for processing flu gas generated under the third working condition After merging the exhaust pipe (L _{ship) connected with}

(Example 7)

_{Although overlapping Example 4, the exhaust pipe (L-fold} ) connected to two activated carbon absorption units or unit group 101 among four independent activated carbon absorption units or unit groups 101 is connected with one two-stage absorption tower, and _{The exhaust pipe (L ship} ) connected to the remaining two activated carbon absorption units or unit group 101 is connected to the communication pipe (3).

(Example 8)

_{Although overlapping Example 4, the exhaust pipe (L ship} ) connected to four independent activated carbon absorption units or unit groups 101 is connected to one independent two-stage absorption tower, respectively, and the exhaust port of the two-stage absorption tower is communicated (3) ) is connected with

(Example 9)

_{Although it overlaps with Example 4, after merging the exhaust pipe (L ship} ) connected to four independent activated carbon absorption units or unit group 101, it is connected with one two-stage absorption tower and the exhaust port of the two-stage absorption tower is connected ( 3) is connected with

(Example 10)

As shown in Fig. 8, a method using Embodiment 2 includes the following steps.

1) installing three activated carbon absorption units or unit groups 101 and one stripping tower 2 independent of each other and installed in parallel in the integration tower 1 in the flue gas treatment system;

2) Flue gas is generated in three working conditions, and the flue gas generated in each working condition is transported to one activated carbon absorption unit or unit group 101 through the flue gas conveying pipe (L), and the activated carbon absorption unit or unit The group 101 performs absorption treatment on the flue gas conveyed by the flue gas conveying pipe L connected to each other, and the flue gas treated by the activated carbon absorption unit or unit group 101 is absorbed by the activated carbon absorption unit or unit group ( venting from the gas outlet 10104 of 101;

3) The activated carbon after absorbing flu gas in each activated carbon absorption unit or unit group 101 is returned from the material outlet to the stripping tower 2 through the first activated carbon conveying facility P1, and the activated carbon after absorption is removed from the stripping tower (2) After completing the stripping and activation within, it is discharged from the material outlet of the stripping tower 2 and returned to the material inlet of each activated carbon absorption unit or unit group 101 through the second activated carbon conveying facility P2 again. .

The flue gas after treatment discharged from the gas outlets of the three activated carbon absorption units or unit group 101 is discharged through three independent channels.

(Example 8)

As shown in Fig. 9, although Example 7 is duplicated as a method of using Example 3, the flue gas after treatment discharged by the gas outlets of three activated carbon absorption units or unit groups 101 is merged into one It is discharged uniformly through the flue.

(Example 11)

As shown in Fig. 10, a method using the fourth embodiment includes the following steps.

1) installing four activated carbon absorption units or unit groups 101 and one stripping tower 2 independent of each other and installed in parallel in the integration tower 1 in the flue gas treatment system;

2) Flue gas is generated in three working conditions, and the flue gas generated in the first working condition (A working condition) is passed through the first flue gas conveying pipe (La) to one independent activated carbon absorption unit or unit group (101). The flue gas is connected to the gas inlet 10103 of Connected to 10103, the flue gas generated in the third working condition (C working condition) is passed through the third flue gas conveying pipe Lc to one independent activated carbon absorption unit or gas inlet 10103 of the unit group 101 ), the activated carbon absorption unit or unit group 101 performs absorption treatment on the flue gas conveyed by the connected flue gas conveying pipe L, respectively, and is processed by the activated carbon absorption unit or unit group 101 The flue gas is discharged from the gas outlet 10104 of the activated carbon absorption unit or unit group 101;

3) The activated carbon after absorbing flu gas in each activated carbon absorption unit or unit group 101 is returned from the material outlet to the stripping tower 2 through the first activated carbon conveying facility P1, and the activated carbon after absorption is removed from the stripping tower (2) After completing the stripping and activation within, it is discharged from the material outlet of the stripping tower 2 and returned to the material inlet of each activated carbon absorption unit or unit group 101 through the second activated carbon conveying facility P2 again. .

The flue gas generated in the first working condition is discharged through one flue 3 after being treated by one activated carbon absorption unit or unit group 101, and the flue gas generated in the second operating condition is treated by two activated carbon absorption units Alternatively, after being treated by the unit group 101, it is discharged through two independent pipes 3, and the flue gas generated in the third working condition is treated by one activated carbon absorption unit or unit group 101 and then one It is discharged through the flue (3).

(Example 12)

As shown in Fig. 11, as a method of using Example 5, Example 11 is duplicated, but the flue gas generated in the first working condition is processed by one activated carbon absorption unit or unit group 101 and then 1 The flue gas generated in the second working condition is discharged through two flues (3), is merged after being treated by two activated carbon absorption units or unit groups (101) and discharged through one independent flue (3), The flue gas generated in the three working conditions is treated by one activated carbon absorption unit or unit group 101 and then discharged through one flue 3 .

(Example 13)

As shown in Fig. 12, the method of using Example 6 overlaps with Example 11, but the flue gas generated in the first working condition is gas after being treated by one activated carbon absorption unit or unit group 101 , the flue gas generated in the second working condition is treated by two activated carbon absorption units or unit groups 101, and the flue gas generated in the third operating condition is treated by one activated carbon absorption unit or unit group 101 The gases after being treated are discharged from the exhaust port of the activated carbon absorption unit or unit group 101, merged, and then are connected to one flue 3 and discharged uniformly.

(Example 14)

Although overlapping Example 7, step 3) is specifically, each activated carbon absorption unit or unit group 101 processes the flue gas of one working condition, the content of contaminants in the flue gas generated under this working condition, By detecting the flow rate of flue gas generated under this working condition, the flow rate of pollutants in the flue gas generated under this working condition is obtained, and based on the flow rate of the pollutant in the flue gas generated under this working condition, flu generated under this working condition The flow rate of the activated carbon in the activated carbon absorption unit or unit group 101 that processes the gas is determined.

The flow rate of contaminants in flue gas is calculated according to the following equation.

where Q _{si is the flow rate of contaminant SO 2} in the flue gas generated under i working condition, and the unit is kg/h;

C _{si is the content of contaminant SO 2} in the flue gas generated under i working condition, the unit is mg/Nm ³ ;

Q _{Ni is the flow rate of pollutant NO X} in flue gas generated under i working condition, unit is kg/h;

C _{Ni is the content of pollutant NO X} in the flue gas generated under i working condition, the unit is mg/Nm ³ ;

V _i is the flow rate of flue gas generated under i working condition, the unit is Nm ³ /h;

i is a sequence number of working conditions, i=1 to 3.

The flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that processes the flue gas generated under this working condition is determined according to the following equation.

Here, Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that processes the flue gas generated under i working condition, and the unit is kg/h;

h _i is 1 as the number of activated carbon absorption units or unit groups 101 for processing flu gas generated under i working conditions;

K ₁ takes 18;

K ₂ takes 3

The flow rate of the activated carbon in the stripping tower 2 is as follows.

where Q _x is the flow rate of the activated carbon in the stripping tower 2, and the unit is kg/h;

Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that treats the flue gas generated under i working condition, and the unit is kg/h;

Q is the flow rate _correction of the activated carbon supplement separately in deionized geotap, the unit kg / h and;

h _i is 1 as the number of activated carbon absorption units or unit groups 101 for processing flu gas generated under i working conditions;

i is a sequence number of working conditions, i=1 to 3.

Based on the flow rate of the activated carbon in the activated carbon absorption unit or unit group that processes the flu gas generated under i working conditions, the flow rate of the activated carbon conveyed by the second activated carbon conveying facility P2 into this activated carbon absorption unit or unit group 101 is Q _xi .

(Example 15)

Although overlapping Example 11, step 3) specifically detects the content of contaminants in the flue gas generated under this working condition and the flow rate of the flue gas generated under this working condition, and the flow rate of contaminants in the flue gas generated under this working condition. and determine the flow rate of the activated carbon in the activated carbon absorption unit or unit group 101 for processing the flue gas generated under this working condition based on the flow rate of contaminants in the flue gas generated under this working condition.

Calculate the flow rate of pollutants in the flue gas according to the equation below.

where Q _{si is the flow rate of contaminant SO 2} in the flue gas generated under i working condition, and the unit is kg/h;

C _{si is the content of contaminant SO 2} in the flue gas generated under i working condition, the unit is mg/Nm ³ ;

Q _{Ni is the flow rate of pollutant NO X} in flue gas generated under i working condition, unit is kg/h;

C _{Ni is the content of pollutant NO X} in the flue gas generated under i working condition, the unit is mg/Nm ³ ;

V _i is the flow rate of flue gas generated under i working condition, the unit is Nm ³ /h;

i is a sequence number of working conditions, i=1-3.

The flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that processes the flue gas generated under this working condition is determined according to the following equation.

Here, Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that processes the flue gas generated under i working condition, and the unit is kg/h;

h _i is the number of activated carbon absorption units or unit groups 101 for processing flu gas generated under i working conditions; Here, h is 1 when processing under the first working condition (A working condition), h is 2 when processing under the second working condition (B working condition), and h when processing under the third working condition (C working condition) 1;

K ₁ takes 18;

K ₂ takes 3

The flow rate of the activated carbon in the stripping tower 2 is as follows.

where Q _x is the flow rate of the activated carbon in the stripping tower 2, and the unit is kg/h;

Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that treats the flue gas generated under i working condition, and the unit is kg/h;

Q is the flow rate _correction of the activated carbon supplement separately in deionized geotap, the unit kg / h and;

h _i is the number of activated carbon absorption units or unit groups 101 for processing flu gas generated under i working conditions; Here, h is 1 when processing under the first working condition (A working condition), h is 2 when processing under the second working condition (B working condition), and h when processing under the third working condition (C working condition) 1;

i is a sequence number of working conditions, i=1-3.

i Based on the flow rate of the activated carbon in each activated carbon absorption unit or unit group that processes the flue gas generated in the working condition, the flow rate of the activated carbon conveyed by the second activated carbon conveying facility P2 in this activated carbon absorption unit or unit group 101 is Control to become Q _xi.

(Example 16)

Although overlapping Example 14, based on the flow rate of activated carbon in the activated carbon absorption unit or unit group for processing flu gas generated under i working condition, the activated carbon absorption unit or unit group 101 for processing flu gas under this working condition. Determine the flow rates of the material feeding device and the material discharging device.

According to the following equation, the flow rate of the material supply device and the material discharge device of the activated carbon absorption unit or unit group 101 for processing the flu gas generated under the i working condition is determined.

Q _{i base} = Q _{i times} = Q _xi ×j;

where Q _i is the flow rate of the material supply device of each activated carbon absorption unit or unit group 101 that processes the flue gas generated under i working condition, and the unit is kg/h;

Q _{i times} is the flow rate of each activated carbon absorption unit or the material discharge device of the unit group 101 that processes the flue gas generated under i working condition, the unit is kg/h;

Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that treats the flue gas generated under i working condition, and the unit is kg/h;

j takes 1 as the adjustment constant.

(Example 17)

A system that duplicates Example 16 and uses Example 5, but this system handles flue gas generated at four operating conditions, with K ₁ taking 16, K ₂ taking 4, and j taking 0.9.

(Example 18)

Using the existing working condition method of any one steel plant, including caulking method, sintering method, and iron making method, install 3 activated carbon absorption units or unit groups and 1 stripping tower, and 3 activated carbon absorption units or unit groups are installed in parallel;

The flue gas generated from the caulking method, the sintering method, and the ironmaking method is independently returned to one activated carbon absorption unit or unit group for purification treatment of the flue gas, and the stripping tower is activated carbon that absorbs contaminants from the activated carbon absorption unit or unit group After removing and activating the carbon, it is circulated to the activated carbon absorption unit or unit group;

Wherein the content of sulfur dioxide in the flue gas generated in the caulking process detects that 96mg / Nm ^3, the amount of NOx 830mg / Nm ^3, the flow rate of the flue gas 2 × 10 ⁶ Nm ³ / h generated in the caulking process, and; _{Calculate that the flow rate Q s coking} of sulfur dioxide in the flue gas of this method is 192 kg/h, and the flow rate Q _{N coking} of nitrogen oxides is 1660 kg/h; _{Through calculation, it is obtained that the flow rate Q x coking} of the activated carbon in the activated carbon absorption unit or unit group that treats the flue gas generated in this coking method is 8436 kg/h.

The content of sulfur dioxide in the flue gas generated in the sintering process detects that 1560mg / Nm ^3, the flow rate is 1.3 × 10 ⁷ Nm ³ / h of flue gas generated in the 360mg / Nm ^3, the sintering process and the content of nitrogen oxides; _{Calculate that the flow rate Q s sintering} of sulfur dioxide in the flue gas of this method is 20280 kg/h, the flow rate of nitrogen oxide Q _{N sintering} is 4680 kg/h; _{Through calculation, it is obtained that the flow rate Q x sintering} of the activated carbon in the activated carbon absorption unit or unit group of the flue gas generated in this sintering method is 3.8×10 ⁵ kg/h.

The content of sulfur dioxide in the flue gas generated from the ironmaking process is 112mg/Nm ³ , the content of nitrogen oxide is 78mg/Nm ³ , and the flow rate of the flue gas generated from the ironmaking process (blast furnace hot stove) is 2×10 ⁶ Nm ³ /h detect; _{Calculates that the flow rate Q s} of the sulfur dioxide in the flue gas of this construction method is 224 kg/h, the flow rate of nitrogen oxide Q _{N iron} is 156 kg/h; Through the calculation is obtained that the flow rate Q _{x Steel} is 4500kg / h of active carbon in the carbon adsorption unit or a unit group which process the flue gas generated in the iron method.

_{The flow rate Q x} of activated carbon in the stripping tower is the sum of Q _{x coking} , Q _{x sintering} , Q _{x iron} and Q x supplemented activated carbon Q _beams are added; Q _beam is generally 600kg/h.

The system and method provided by the present invention detect the gas discharged from the three activated carbon absorption units or unit group exhaust ports after the flue gas generated in the caulking method, the sintering method, and the iron making method has undergone purification treatment; here,

The content of sulfur dioxide in the carbon adsorption unit or a unit group, the exhaust port to handle the flue gas generated in the caulking process the exhaust gas is 26mg / Nm ^3, the content of nitrogen oxides is 124mg / Nm ^3, and;

The content of sulfur dioxide in the carbon adsorption unit or a unit group, the exhaust port to handle the flue gas generated in the sintering process the exhaust gas is 33mg / Nm ^3, the content of nitrogen oxides is 97mg / Nm ^3, and;

The content of sulfur dioxide in the carbon adsorption unit or a unit group of vent gas is discharged to process flue gas generated in the iron method is 31mg / Nm ^3, the content of nitrogen oxides is 49mg / Nm ^3, and;

The gases emitted by the three activated carbon absorption units or unit group exhaust ports all reach the emission standards stipulated by the country and can be discharged.

1: accumulation tower; 101: independent activated carbon absorption unit or unit group; 10101: material inlet; 10102: material outlet; 10103: gas inlet; 10104: gas outlet; 2: stripping tower; 3: flue; 4: material feeder; 5: material ejector; P1: the first activated carbon transport facility; P2: second activated carbon transport facility; L: flue gas conveying pipe; La: the first flue gas conveying pipe; Lb: second flue gas conveying pipe; Lc: third flue gas conveying pipe; L _ship : exhaust pipe.

Claims (15)

An accumulation tower (1), a stripping tower (2), a first activated carbon conveying facility (P1), a second activated carbon conveying facility (P2), a flue gas conveying pipe (L), a plurality of exhaust pipes (L _times ), and a plurality of In the flue gas concentration independent purification treatment system of multiple working conditions including a flue (3),
The integration tower 1 includes a plurality of independent activated carbon absorption units or unit groups 101 installed in parallel, and each independent activated carbon absorption unit or unit group 101 has a material inlet 10101 installed at the upper end and a material outlet at the lower end. 10102 is installed, and the material outlet 10102 of all activated carbon absorption units or unit groups 101 is connected to the material inlet of the stripping tower 2 through the first activated carbon conveying facility P1, and the stripping tower 2 ) is connected to the material inlet 10101 of each activated carbon absorption unit or unit group 101 through the second activated carbon conveying facility P2, and the flue gas generated in each working condition among flu gases in multiple working conditions is Each independently connected to the gas inlet 10103 of one or a plurality of independent activated carbon absorption unit or unit group 101 through the flue gas conveying pipe (L),
A plurality of independent activated carbon absorption units or groups of units (101) are each connected to a corresponding flue (3) through a plurality of exhaust pipes (L times) according to different emission standards. Intensive independent purification treatment system.
delete According to claim 1,
The integration tower 1 of this system includes n independent activated carbon absorption units or unit groups 101, and generates flue gas under m working conditions, and each working condition of the flue gas at m working conditions occurs. Each flue gas is independently connected to the gas inlet 10103 of h independent activated carbon absorption units or unit groups 101 through one flue gas conveying pipe L,
wherein n is 2 to 10 or 3 to 6, 2≤m≤n, and 1≤h≤(n-m+1).
4. The method of claim 3,
_{The exhaust pipe (L ship} ) connected to the gas outlet 10104 of the n independent activated carbon absorption units or unit group 101 is connected to the j communication units 3, and 1≤j≤n; and
n independent activated carbon absorption units or unit groups 101 are closely installed, or n independent activated carbon absorption units or unit groups 101 are spaced between each other, or adjacent activated carbon absorption units or unit groups 101 the spacing between them is 10 to 5000 cm or 20 to 3000 cm or 50 to 2000 cm; Flue gas concentration independent purification treatment system of multiple working conditions, characterized in that at least one of.
5. The method of claim 4,
The integrated tower (1) of this system comprises three or four independent activated carbon absorption units or unit groups (101); generating flue gas under three working conditions: A working condition, B working condition, and C working condition; Here, the flue gas generated under the A working condition is connected to the gas inlet 10103 of one independent activated carbon absorption unit or unit group 101 through the first flue gas conveying pipe La, and the flue gas generated under the B working condition is It is connected to the gas inlet 10103 of one or two independent activated carbon absorption units or unit groups 101 through the second flue gas transport pipe Lb, and the flue gas generated under the C working condition is transferred to the third flue gas transport pipe connected to the gas inlet 10103 of one independent activated carbon absorption unit or unit group 101 through (Lc); _{An exhaust pipe (L ship} ) connected to one activated carbon absorption unit or unit group 101 that processes the flue gas generated in the A working condition is connected to one flue (3), and the flue gas generated in the B working condition is One or two activated carbon absorption units or exhaust pipes (L _ships ) connected to the unit group 101 are connected to one flue (3), and one activated carbon absorption unit or unit for processing the flue gas generated in the C working condition. _{The exhaust pipe (L ship} ) connected to the group (101) is connected to one flue (3), characterized in that the flue gas concentration independent purification treatment system of multiple working conditions.
6. The method of any one of claims 1, 3 to 5, wherein
The first activated carbon conveying facility P1 and the second activated carbon conveying facility P2 are belt-type conveying devices, or the first activated carbon conveying facility P1 and the second activated carbon conveying facility P2 are "Z" type or reverse or "Z"-type all conveyors, or the first activated carbon conveying facility P1 and the second activated carbon conveying facility P2 are each composed of several conveying devices; and
The activated carbon absorption unit or unit group 101 is each independently a single stage activated carbon absorption unit or unit group, or a multistage activated carbon absorption unit or unit group, or 1-n units in the n activated carbon absorption unit or unit group 101 _{The exhaust pipe (L ship} ) connected to the gas outlet 10104 of the activated carbon absorption unit or unit group 101 is connected to the two-stage absorption tower, and then the gas outlet of the two-stage absorption tower is again connected to the communication (3); Flue gas concentration independent purification treatment system of multiple working conditions, characterized in that at least one of.
6. The method of any one of claims 1, 3 to 5, wherein
further comprising a material feeding device (4) and a material discharging device (5); At the upper end of each activated carbon absorption unit or unit group 101, a single material supplying device 4 is installed, and the second activated carbon conveying device P2 is connected to each activated carbon absorption unit or through a single independent material supplying device 4 connected to the material inlet 10101 of the unit group 101; One material discharge device 5 is installed at each activated carbon absorption unit or the material discharge port 10102 of the unit group 101, and the material discharge device 5 of the activated carbon absorption unit or unit group 101 is discharged through the material discharge device 5. Flue gas concentration independent purification treatment system of multiple working conditions, characterized in that it is connected to the first activated carbon transport facility (P1).
1) In the flue gas treatment system, n activated carbon absorption units or unit groups 101 and one stripping tower 2 are installed in the integration tower 1, and the n activated carbon absorption units or unit groups 101 are independent of each other. to install in parallel;
2) A flue gas is generated in m working conditions, and the flue gas generated in each working condition is returned to h activated carbon absorption units or unit groups 101 through the flue gas conveying pipe (L), and activated carbon absorption units or unit groups (101) proceeds with absorption processing for the flu gas conveyed by the flue gas conveying pipe (L) connected to each, and the activated carbon absorption unit or unit group 101 for the flu gas treated by the activated carbon absorption unit or unit group 101 evacuating from the gas outlet 10104 of
3) The activated carbon after absorbing flu gas in each activated carbon absorption unit or unit group 101 is returned from the material outlet to the stripping tower 2 through the first activated carbon conveying facility P1, and the absorbed activated carbon is removed from the stripping tower (2) After completing the stripping and activation in the interior, it is discharged from the material outlet of the stripping tower 2 and returned to the material inlet of each activated carbon absorption unit or unit group 101 through the second activated carbon conveying facility P2 again. ; and
Discharging the flue gas after treatment according to different emission standards to the corresponding flue 3 through a _{plurality of exhaust pipes (L times), respectively;}
wherein n is 2 to 10 or 3 to 6, 2≤m≤n, and 1≤h≤(n-m+1).
9. The method of claim 8,
The treated flue gas discharged by the gas outlet 10104 of the n activated carbon absorption units or unit group 101 is discharged through j flues 3, but 1≤j≤n of multiple working conditions, characterized in that Flue gas intensive independent purification treatment method.
10. The method according to claim 8 or 9,
Step 3) is specifically,
h activated carbon absorption units or unit groups 101 process the flue gas of one working condition and detect the content of contaminants in the flue gas generated under this working condition, and the flow rate of the flue gas generated under this working condition to obtain the flow rate of contaminants in the flue gas generated from;
Flue gas under multiple working conditions, characterized in that the flow rate of activated carbon in the activated carbon absorption unit or unit group 101 for processing the flue gas generated under this working condition is determined based on the flow rate of contaminants in the flue gas generated under this working condition Intensive independent purification treatment method.
11. The method of claim 10,
Calculate the flow rate of pollutants in the flue gas according to the following equation based on the flue gas flow rate and the content of pollutants in the flue gas,

where Q _{si is the flow rate of contaminant SO 2} in the flue gas generated under i working condition, and the unit is kg/h;
C _{si is the content of contaminant SO 2} in the flue gas generated under i working condition, the unit is mg/Nm ³ ;
Q _{Ni is the flow rate of pollutant NO X} in flue gas generated under i working condition, unit is kg/h;
C _{Ni is the content of pollutant NO X} in the flue gas generated under i working condition, the unit is mg/Nm ³ ;
V _i is the flue gas flow rate generated under i working condition, in units of Nm ³ /h;
I is the sequence number of working conditions, i=1~m;
Based on the flow rate of contaminants in the flue gas, the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that processes the flu gas generated under this working condition is determined according to the following equation,

where Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that treats flu gas generated under i working condition, and the unit is kg/h;
h _i is the number of activated carbon absorption units or unit groups 101 for processing flu gas generated under i working conditions;
K ₁ generally takes 15-21 as a constant;
K ₂ is a flue gas concentration independent purification treatment method of multiple working conditions, characterized in that it generally takes 3 to 4 as a constant.
12. The method of claim 11,
The flow rate of the activated carbon in the stripping tower 2 is obtained according to the following equation,

where Q _x is the flow rate of activated carbon in the stripping tower 2, and the unit is kg/h;
Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that treats the flue gas generated under i working condition, and the unit is kg/h;
Q is the flow rate _correction of the activated carbon supplement separately in deionized geotap, the unit kg / h and;
h _i is the number of activated carbon absorption units or unit groups 101 for processing flu gas generated under i working conditions;
I is the order of operation conditions, and i = 1 to m. Flue gas concentration independent purification treatment method under multiple operation conditions, characterized in that.
13. The method of claim 12,
Based on the flow rate of each activated carbon absorption unit or unit group 101 that processes the flu gas generated under the i working condition, each activated carbon absorption unit or unit group 101 processed under i working condition by the second activated carbon conveying facility P2 ) to control the flow rate of the activated carbon returned into Q _{xi ;} i Based on the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 for processing flu gas generated under the working condition, each activated carbon absorption unit or unit group 101 for processing flu gas under this working condition is a material supplying device And flue gas concentration independent purification treatment method of multiple working conditions, characterized in that to determine the flow rate of the material discharge device.
14. The method of claim 13,
Determine the flow rate of the material supply device and the material discharge device of each activated carbon absorption unit or unit group 101 that processes the flu gas generated under the i working condition according to the formula below,
Q _{i base} = Q _{i times} = Q _xi ×j;
Here, Q _i is the flow rate of the material supply device of each activated carbon absorption unit or unit group 101 that processes the flu gas generated under i working condition, and the unit is kg/h;
Q _{i times} is the flow rate of each activated carbon absorption unit or the material discharge device of the unit group 101 that treats the flue gas generated under i working condition, the unit is kg/h;
Q _xi is the flow rate of activated carbon in each activated carbon absorption unit or unit group 101 that treats the flue gas generated under i working condition, and the unit is kg/h;
j is a control constant and j is 0.8 to 1.2, or 0.9 to 1.1, or 0.95 to 1.05.
6. A method using the flue gas intensive independent purification treatment system of any one of claims 1, 3 to 5, in multiple operating conditions.

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