TR202008603T2 - A CENTRAL AND INDEPENDENT MULTIPLE WORKING CONDITIONS FLUE GAS TREATMENT SYSTEM AND A CONTROL METHOD FOR THEM - Google Patents

Abstract

The present application provides a flue gas purification system that can efficiently process flue gases produced under multiple operating conditions. Flue gases produced under multiple operating conditions are transported via flue gas transport pipes to a purification system consisting of an integrated tower containing a plurality of independent activated carbon adsorption units or groups of units and a desorption tower, where the flue gas produced under each operating condition is treated by an independent It is purified through the activated carbon adsorption unit or unit group, where the pollutant in the activated carbon adsorption unit or unit group is desorbed and activated through the adsorbed activated carbon desorption tower, and then transported to each activated carbon adsorption unit or unit group for recycling. In the treatment system according to the invention, the flue gas produced under each operating condition is treated independently, the flow field of the flue 15 gas produced under each operating condition is not affected, the emission standards are different, the operating parameters are different to treat the flue gas produced under each operating condition, and then the activated carbon desorbed jointly, thus greatly reducing the utilization of the desorption tower, saving the equipment investment, and at the same time improving the utilization rate and working efficiency of the desorption tower. (Figure 2)

Description

DESCRIPTION CENTER AND AN INDEPENDENT MULTI-WORKING CONDITIONS FLUE GAS PURIFICATION SYSTEM AND A CONTROL METHOD THEREOF FIELD OF THE INVENTION The present invention provides an activated carbon flue gas purification system and a control method thereof, and in particular an activated carbon treated multi-operating condition flue gas purification system and a control method thereof. It is related to a control method of the purification field. BACKGROUND OF THE INVENTION The steel industry is a backbone industry of the entire national economy. However, although it contributes to the development of the economy, the steel industry causes a serious air pollution problem. Flue gases are produced in many processes of the steel industry, such as sintering, pelletizing, coking, ironmaking, steelmaking and steel rolling. The flue gas discharged in each process contains many pollutants such as dust, SOZ, NOK, etc. Once discharged into the air, dirty flue gas not only pollutes the environment but also threatens human health. Therefore, activated carbon flue gas purification technology is generally used in the steel industry, where it is placed in the flue gas purification equipment for flue gas adsorption, thus performing a purification process on the discharged flue gas in each process. The existing activated carbon flue gas purification technology of the steel industry is applied to a flue gas purification system, and Figure 1 shows an activated carbon flue gas purification system including: a raw flue gas to be purified, an adsorption tower discharging dirty activated carbon, activating dirty activated carbon and a desorption tower for discharge of active activated carbon, an acid generating subsystem for recycling and reuse of 802 and NOX pollutants (two not shown), and two activated carbon conveyors. When the system works, the activated carbon carried by the first conveyor enters the adsorption tower through a feeding equipment and forms an activated carbon layer in the adsorption tower, and at the same time, the raw flue gas containing the pollutants 802 and N02() continuously enters the adsorption tower and also enters the activated carbon layer, Thus, the 802 and NOX in the raw flue gas are adsorbed by the activated carbon, thus being discharged as a clean flue gas. The discharging equipment of the adsorption tower works continuously and discharges the dirty activated carbon enriched with 802 and NOX, and then the dirty activated carbon is transported to the desorption tower by the second carrier. The dirty activated carbon carried by the second conveyor enters the desorption tower through a feeding equipment, where the pollutants such as 802 and NOX, etc. are desorbed from the dirty activated carbon, and the discharging equipment removes the activated carbon activated in the desorption castle. and then delivers the first carrier activated carbon to the adsorption tower for recycling. An application mode of the activated carbon flue gas purification system shown in Fig. 1 is as follows: a set of adsorption towers and a set of desorption towers are provided in each flue gas discharge process, and each pair of adsorption towers and desorption towers is designed to purify the dirty flue gas produced in each process. It works simultaneously for . However, because the scale of each process in a steel mill and the amount of flue gas produced are different from each other, in order to achieve an optimal purification effect of flue gas, processes at different scales require a flue gas purification equipment matching the scales, which results in different types of flue gas purification in the steel mill. may result in the provision of equipment. In addition, an independent activated carbon desorption tower needs to be provided for each flue gas treatment equipment, which may cause the overall structure of flue gas treatment to provide too many activated carbon desorption towers in the steel chimney, and the system in the steel enterprise becomes complex; Moreover, the flue gas produced in each process needs to be treated independently, and the result is that the flue gas treatment system has low operating efficiency. Considering the large investment of desorption tower, not only equipment resources are wasted but also the difficulty of operation management increases. Therefore, how to provide a flue gas treatment system capable of treating flue gas efficiently has become an urgent problem in this field. In some processes in the state of the art, flue gases produced in more than one process are converged and then purified by an activated carbon adsorption tower. It has the following shortcomings: 1) the content of pollutants in the flue gas produced in each process is different, and after the flue gases of multiple processes are combined, for the flue gas with low pollutant content, the pollutant content will be increased after mixing, thus increasing the treatment load of the adsorption tower; 2) If the flue gases produced under different operating conditions are simply centralized in one-end purification and adsorption equipment, it may cause mutual interference between flow fields, thus affecting the discharge uniqueness of the main process, and at the same time, the production regime of each operating condition is different, and the production stability of the main process or end The stable operation and safety of the treatment equipment will be affected by the concentration of flue gases; 3) national and industrial emission standards on flue gases produced in different processes are different, for example, the emission standard for flue gas produced in the coking process requires the sulfur dioxide content to be lower than 30 mg/Nm3 and the nitrogen oxide content to be lower than 150 mg/Nm3, but not sintering The flue gas emission standard produced in the process requires the sulfur dioxide content to be lower than 180 mg/Nm3 and the nitrogen oxide content to be lower than 300 mg/Nms, and the ultra-low emission standard requires the sulfur dioxide content to be lower than 35 mg/Nm3 and the nitrogen oxide content to be lower than 300 mg/Nm3. It requires less than 50 mg / Nm3. Therefore, for the flue gases produced in different processes, the pollutant emission standards for the flue gases discharged after treatment by the activated carbon adsorption tower are different, and if the flue gases of more than one process are purified by the activated carbon adsorption tower after convergence, the contents of pollutants in the flue gases discharged after purification are the same . However, if flue gases are discharged in accordance with the minimum emission standards for flue gases of all processes, the air is apparently polluted and does not comply with this industrial standard; If flue gases are discharged according to the maximum standard of emission standards for flue gases of all processes, the operating cost will increase greatly. SUMMARY OF THE INVENTION A prior art flue gas treatment system requires large investment and low efficiency, etc. Addressing these problems, the present invention provides a flue gas purification system that can effectively process flue gases through multiple processes. Flue gases produced under various operating conditions are transported through flue gas transport pipes to a purification system comprising an integrated tower and a desorption tower. The flue gas produced under each operating condition is independently purified by an activated carbon adsorption unit or group of units and then processed flue gas is discharged; Pollutant adsorbed activated carbon in a plurality of activated carbon adsorption units or unit groups is desorbed and activated through the desorption tower, and then transported to each activated carbon adsorption unit or unit group for recycling. In a centralized and independent multi-working condition flue gas purification system according to the invention, the flue gas produced under each working condition can be treated independently, and then the activated carbon can be combinedly desorbed, so that the equipment resources in the use of the desorption tower can be greatly reduced and the difficulty in operation management can be improved, and the same At the same time, the utilization rate and working efficiency of the desorption tower are improved. According to a first embodiment of the invention, there is a central and independent multi-working condition flue gas purification system. The centralized and independent multi-operation flue gas purification system includes: an integrated tower, a desorption tower, a first activated carbon transport equipment, a second activated carbon transport equipment and flue gas transport pipes. The integrated tower contains multiple independent activated carbon adsorption units or groups of units supplied in parallel. A supply port is located at the top of each independent activated carbon adsorption unit or unit group, and a discharge port is located at the bottom of each independent activated carbon adsorption unit or unit group. The discharge ports of all activated carbon adsorption units or unit groups are connected to the feed port of the desorption tower by means of a first activated carbon transport equipment. The discharge port of the desorption tower is connected to the feed port of each activated carbon adsorption unit or unit group through a second activated carbon transport equipment. Among the flue gases produced under more than one operating condition, the flue gases produced under each operating condition are fed independently to the air inlet of one or more independent activated carbon adsorption units or unit groups, respectively, through flue gas transport pipes. Preferably, the system also includes an exhaust line and a chimney. The gas outlet of each activated carbon adsorption unit or unit group is connected to an exhaust line. The exhaust line is connected to the chimney. Preferably, the exhaust lines connected to the gas outlets of all activated carbon adsorption units or groups of units are brought close together and then connected to the pipe for combined discharge. Preferably, exhaust lines connected to the gas outlets of one or more independent activated carbon adsorption units or unit groups are connected to a chimney for independent discharge. In the invention, the integrated tower of the system includes n independent activated carbon adsorption units or unit groups that produce flue gases and m operating conditions, among the flue gases produced under m operating conditions, the baea gas produced under each operating condition is independently connected to the independent activated carbon through a flue gas transport pipe. h to the air inlets of the adsorption units or groups of units, where: n is 2-10, preferably 3-6; ZSmSn; lihî becomes (n-m + 1). Preferably, exhaust lines connected to the gas outlets of n independent activated carbon adsorption units or unit groups are connected to j chimneys; where: lSjSn. Preferably, n independent activated carbon adsorption units or groups of units are provided tightly or there is a gap between each of the n independent activated carbon adsorption units or groups of units; preferably space between adjacent activated carbon adsorption units or unit groups. Preferably, the integrated tower of the system contains three or four independent activated carbon adsorption units or unit groups. Flue gases are produced under three operating conditions: operating condition A, operating condition B and operating condition C, respectively. The flue gas produced under operating condition A is connected to the air inlet of an independent activated carbon adsorption unit or unit group through the first flue gas transport pipe. The flue gas produced under operating condition B is connected to the air inlets of one or two independent activated carbon adsorption units or unit groups through the second flue gas transport pipe. The flue gas produced under operating condition C is connected to the air inlet of an independent activated carbon adsorption unit or unit group through the third flue gas transport pipe. Exhaust lines connected to an activated carbon adsorption unit or unit group that processes the flue gas produced under an operating condition A are connected to a chimney. Exhaust lines connected to one or two activated carbon adsorption units or groups of units that process the flue gas produced in operating condition B are connected to a chimney. Exhaust lines connected to an activated carbon adsorption unit or unit group that processes the flue gas produced under an operating condition C are connected to a chimney. Preferably, the first activated carbon conveying equipment and the second activated carbon conveying equipment are belt conveyors. Preferably, the first activated carbon conveying equipment and the second activated carbon conveying equipment are Z-Shaped or inverted Z-shaped integrated conveyors, or the first activated carbon conveying equipment and the second activated carbon conveying equipment include a plurality of conveying devices, respectively. Preferably, the activated carbon adsorption unit or unit group is independently a single-stage activated carbon adsorption unit or unit group or a multi-stage activated carbon adsorption unit or unit group. Preferably, exhaust lines (Lex) connected to the gas outlets of l-n activated carbon adsorption units or unit groups in n activated carbon adsorption units or unit groups are connected to a secondary adsorption tower and then to the gas outlet of the secondary adsorption tower. Preferably, the system also includes a feeding equipment and a discharging equipment. There is a feeding equipment on top of each activated carbon adsorption unit or group of units. The second activated carbon transport equipment is connected to the feed port of each activated carbon adsorption unit or unit group through an independent feeding equipment. The discharge port of each activated carbon adsorption unit or unit group is equipped with a discharge device. The discharge port of the activated carbon adsorption unit or unit group is connected to the first activated carbon transport equipment through the discharge equipment. According to the second embodiment of the invention, a centralized and independent purification method for flue gas with multiple operating conditions is presented. The method of centralized and independent purification for Multi-working condition flue gas or the method of using the system according to the first embodiment includes the following steps: 1) the integrated tower in the flue gas purification system includes n activated carbon adsorption unit or group of units and a desorption tower; where n activated carbon adsorption units or groups of units are provided independently and in parallel; 2) flue gases are produced under m operating conditions, the flue gas produced under each operating condition is transported to h active carbon adsorption units or unit groups through flue gas transport pipes, and the activated carbon adsorption unit or birr group is respectively transported through the connected flue gas transport pipe to the chimney The flue gas treated by the gas and activated carbon adsorption unit or unit group is discharged from the gas outlet of the activated carbon adsorption unit or unit group; 3) the activated carbon absorbing flue gas in each activated carbon adsorption unit or group of units is transported to the desorption tower from a discharge port by means of a first activated carbon transport equipment; The activated carbon absorbing the flue gas is desorbed and activated in the desorption tower, then discharged from the discharge port of the desorption tower, and then transported to the feed port of each activated carbon adsorption unit or group of units through a second activated carbon conveying equipment; where n is 2-10, preferably 3-6; ZSmSn; becomes lShS (n-m + 1). Preferably, the treated flue gas discharged from the gas outlet of n activated carbon adsorption units or groups of units is discharged through j chimneys; here is lsjîn. Preferably stage 3) specifically includes: h activated carbon adsorption units or groups of units, treating the flue gas produced under an operating condition, detecting the content of pollutants in the flue gas produced under the operating condition and the flue flow rate of the gas produced under the operating condition and the operating condition It obtains the flow rate of pollutants in the flue gas produced under Preferably, the flow rate of activated carbon in the activated carbon adsorption unit or unit group that processes the flue gas produced under the operating condition is determined according to the flow rate of pollutants in the flue gas produced under the operating condition. Preferably, the flow rate of pollutants in the flue gas is calculated by the following formula according to the flow rate of the flue gas and the content of pollutants in the flue gas: where Qsi, i, kg / hour of pollutant SOg in the flue gas produced under the operating condition Cgi, operating condition i, mg / It is the content of 802 pollutants in the flue gas produced below Nm3; QNi, i, kg/h is the flow rate of pollutant NOx in the flue gas produced under the operating condition; CNi is the content of NOx pollutant in the flue gas produced under operating condition i, mg f Nm3; Vi is the flow rate of flue gas produced under the operating condition of i, Nm3/hour; and i is the sequence number of the operating condition, i = 1 ~ rn. Preferably, the flow rate of activated carbon in each activated carbon adsorption unit or group of units processing the flue gas produced under the operating condition is determined according to the flow rate of pollutants in the flue gas by the following formula: where Qxi, i, kg/h of flue gas produced under the operating condition] in each processing unit is the flow rate of activated carbon in an activated carbon adsorption unit or group of units; h is the number of activated carbon adsorption units or unit groups that process the flue gas produced under the operating condition; K1 is constant, usually 15-21; and K2 is constant, usually 3-4. In the invention, the flow rate of activated carbon in the desorption tower is: QX : Z QXI QXi is the flow rate of activated carbon in each activated carbon adsorption unit or unit group that processes the flue gas produced under the operating condition of i, kg/h; Qsupp is the flow rate of activated carbon added to the desorption tower, determined in kg/h; h is the number of activated carbon adsorption units or unit groups that process the flue gas produced under the operating condition; and i is the sequence number of the operating condition, i : 1 ~ m. Preferably, according to the flow rate of each activated carbon adsorption unit or unit group that processes the flue gas produced under the operating condition, the flow rate of the activated carbon transferred to each activated carbon adsorption unit or unit by the second activated carbon transport equipment is controlled as the i group Qxi. Preferably, the flow rate of a feeding equipment and a discharge equipment of each activated carbon adsorption unit or unit group that processes the flue gas produced under the working condition is determined according to the flow rate of the activated carbon in each activated carbon adsorption unit or the flue gas produced under the working condition. Preferably, the flow rate of the feeding equipment and discharge equipment of each activated carbon adsorption unit or unit group that processes the flue gas produced under the operating condition i is determined according to the following formula: Qé-feed : Qi-disehamc : QXi / hour is the flow rate of the feed equipment of each activated carbon adsorption unit or unit group that processes the flue gas produced under the operating condition; of each activated carbon adsorption unit or group of units, i is the flow rate of the discharge equipment that processes the flue gas produced under the operating condition of kg/h; Qxi is the flow rate of activated carbon in each activated carbon adsorption unit or unit group that processes the flue gas produced under the operating condition of i, kg/h; and In the invention, activated carbon adsorption unit or unit group can also be referred to as activated carbon adsorption unit or activated carbon adsorption unit group. Activated carbon adsorption unit (or activated carbon adsorption unit group) is a complete activated carbon adsorption device with a similar function to the complete activated carbon adsorption tower in the prior art. In the integrated incubator, a plurality of independent activated carbon adsorption units or groups of units are provided in parallel, thus applying the concentration of a plurality of independent activated carbon adsorption units, which is similar to providing a plurality of activated carbon adsorption towers in parallel. However, the integrated tower of the invention contains a large number of independent activated carbon adsorption units or groups of units, the space utilization rate is high and the coverage can be saved; At the same time, because a large number of activated carbon adsorption units or groups of units are tightly provided, the adsorption of activated carbon is carried out at a high temperature, and the heat dissipation can be reduced by the design of the integrated tower, chimney. The gas adsorption efficiency of activated carbon can be increased. Preferably, the activated carbon central desorption system includes: a desorption tower; feed equipment configured to control the flow rate of contaminated activated carbon entering the desorption tower; discharge equipment configured to discharge active activated carbon activated in the desorption tower; screening equipment configured to screen activated carbon discharged from the discharge equipment; an activated activated carbon box configured to collect activated activated carbon sieved by the sieving equipment; a main activated carbon box provided between an outlet end of the flue gas purification equipment corresponding to each process and the feed equipment and configured to collect contaminated activated carbon discharged from the flue gas purification equipment in each process; a belt weigher provided between the main activated carbon box and the feeding equipment and configured to convey dirty activated carbon in the main activated carbon box to the desorption tower; and a new activated carbon supplement equipment provided above the main activated carbon box and configured to add the new activated carbon to the main activated carbon box, which is configured to add the new activated carbon to the main activated carbon box, that is, to add the activated carbon to the desorption tower. In the invention, one or more activated carbon adsorption units or unit groups are provided independently of each flue gas discharge condition, and the activated carbon adsorption unit or unit group that processes the flue gases produced under multiple operating conditions is equipped with a central desorption tower for processing the dirty activated carbon as a concentrate. is provided, this corresponds to some or all of the adsorption towers in the whole factory, so that there is a multiple relationship between the desorption tower and activated carbon adsorption units or groups of units. In addition, the flow rate of raw flue gas entering the activated carbon adsorption unit or unit group, the content of pollutants in the raw flue gas, and the circulating flow rate of activated carbon in the adsorption tower are the main factors affecting the effect of flue gas purification. For example, when the flow rate of raw flue gas increases and/or the content of pollutants in the raw flue gas increases, the circulating flow rate of activated carbon in the activated carbon adsorption unit or unit group needs to be increased quantitatively, at the same time to guarantee the effect of flue gas purification; Otherwise, a phenomenon may occur in which the activated carbon is saturated while some of the pollutants in the raw flue gas are not adsorbed, thus reducing the purification effect. Therefore, in the invention, each activated carbon adsorption unit or unit group processes the flue gas produced under a working condition, detects the content of pollutants in the flue gas produced under the working condition and the flow rate of the flue gas produced under the working condition, and determines the working condition and operating condition. obtains the flow rate of pollutants in the flue gas produced below; The flow rate of activated carbon in the unit group that processes the flue gas produced under the activated carbon adsorption unit or working group is determined according to the flow rate of the pollutants in the flue gas produced under the operating condition. The relationship between factors such as the circulating flow rate of activated carbon in the adsorption tower and the flow rate of raw flue gas can be balanced. Then, the desorption tower intensively activates the dirty activated carbon, which is discharged by a large number of activated carbon adsorption units or groups of units. Because a large number of activated carbon adsorption units or groups of units have different scales, the discharge flow rate of contaminated activated carbon is different. In addition, the dirty activated carbon processed by the desorption tower comes from activated carbon adsorption units or groups of units provided for different processes, thus causing equipment malfunction and production schedule adjustment, etc. fluctuates the stability of the amount of activated carbon output from adsorption towers for different processes. Therefore, the flow rate of activated carbon in the discharge equipment and desorption tower of the feeding equipment and discharge equipment of the activated carbon adsorption unit or unit group, which processes the flue gas produced under the working condition. It is determined by the flow at the operating rate, thus controlling the balance between the dirty activated carbon purification ability of the desorption tower and the activated carbon discharge amount of a large number of adsorption towers. In the invention, the treatment system processes flue gases produced under more than one operating condition at the same time, and the treatment system consists of a plurality of activated carbon adsorption units or groups of units and a desorption tower, wherein a plurality of activated carbon adsorption units or groups of units and the desorption tower are provided in the same area, and The activated carbon is transported between a plurality of activated carbon adsorption units or groups of units and the desorption tower through two activated carbon transport equipment (a first activated carbon transport equipment and a second activated carbon transport equipment), where the first activated carbon transport equipment is transported between a plurality of activated carbon transport equipment and a plurality of activated carbon transport equipment. The pollutant discharged from the adsorption unit or unit group carries the adsorbed activated carbon to the desorption tower, and the second activated carbon transport equipment transports the desorbed activated carbon (including the activated carbon carried by the activated carbon adsorption unit or unit group and also the new activated carbon added) to each activated carbon It conveys to the adsorption unit or unit group, so that the entire transport and transport of activated carbon can be carried out by two activated carbon transport equipment. Thus, the defects of the dispersed arrangement of activated carbon adsorption units or groups of units can be eliminated. In the prior art, the arrangement of activated carbon adsorption units or unit groups is dispersed, and the desorbed activated carbon needs to be transferred to each activated carbon adsorption unit or unit group one by one, and because the layout of a steel enterprise is large, the land occupation is large, the transportation distance is large, in addition, the activated carbon Since its use is long-term and continuous, the transportation cost of activated carbon is high, which requires the design of a special transportation route and causes waste of resources. In addition, the traditional design of a desorption tower for an activated carbon adsorption tower in the prior art is also modified, and the invention has a plurality of activated carbon adsorption units or groups of units for a desorption tower, so that the desorption tower can be reduced and at the same time the utilization rate and working efficiency of the desorption tower can be improved. . In the invention, flue gases produced under multiple operating conditions are transported to activated carbon adsorption units or unit groups of the sales system through flue gas transport pipes, where the flue gas produced under each operating condition is transported to one or more independent activated carbon adsorption units through an independent flue gas transport pipe. It is produced under an operating condition and transported to the unit or unit group, that is, one or more activated carbon adsorption units or unit groups that process the flue gas, and the flue gas produced under each operating condition is purified independently. By its design of independent purification of flue gas, it can be flexibly adapted for different content of pollutants in the flue gas produced in each process and for different emission standards. For example, for the flue gas produced in a coking process, the sulfur dioxide content is 400-2000 mg/Nm3, and the nitrogen oxide content is 300-450 mg/Nm3; For the flue gas produced in an iron-making process, the sulfur dioxide relevant industry prescribes different emission standards for the flue gas produced in different processes and the flue gas discharged in the coking process, the sulfur dioxide content is less than about 30 mg / Nm3 and the nitrogen oxides content is less than 150 mg / Nm3 is lower than; For the flue gas discharged in the sintering process, the sulfur dioxide content is lower than 180 mg/Nm3 and the nitrogen oxide content is lower than 300 mg/Nm3; In the current ultra-low emission standard for flue gas sintering, it requires the sulfur dioxide content to be lower than 35 mg/Nm3 and the nitrogen oxide content to be lower than 50 mg/Nm3; For the flue gas discharged in the iron producing process, the sulfur dioxide content is lower than 100 mg/Nm3 and the nitrogen oxide content is lower than 300 mg/Nm3. If the flue gases from all processes are directly mixed (or converged) and then put through an adsorption process, the efficiency of the adsorption tower will almost increase. For example, since the sulfur dioxide content in the chimney gas produced in the smelling process is small and the sulfur dioxide in the chimney gas produced in the sintering process, the sulfur dioxide in the smelling of the sulfur diaxis can be increased. ica , the content of each component in the flue gas produced in different processes (for example, sulfur dioxide and nitrogen oxides) is different, and the focus of processing of the flue gases produced in different processes is different. For example, for the coking process, sintering process and iron-making process, the flue gas produced in any process needs a desulfurization and denitrification process, so that the content of pollutants in the flue gas produced in each process must be lower than the national emission standard before being discharged. However, the processes have different requirements such as raw materials, environment and purification target, etc. Due to different factors such as the content of pollutants in the flue gas produced in the coking process, the sintering process and the iron making process are different, and the Government prescribes different emission standards for the flue gases produced in the three processes. Comparing the coking process with the sintering process: for the flue gas produced in a coking process, the sulfur dioxide content is small and the nitrogen oxide content is large, then in the adsorption process, the focus is on nitrogen oxides and the amount of ammonia gas that needs to be injected into the activated carbon adsorption unit or unit group is large; For the flue gas produced in a sintering process, the sulfur dioxide content is large and the nitrogen oxide content is small, then in the adsorption process, the focus is on sulfur dioxide treatment, and the amount of ammonia gas that needs to be injected into the activated carbon adsorption unit or unit group is small. For the flue gas produced in the iron-making process, the sulfur dioxide content and nitrogen oxide content are low, then in the adsorption process, the flue gas is easier to process than the flue gas produced in the coking process, and can be discharged after the sintering process and simple desulfurization and denitrification; If this part of the flue gas is purified after mixing with the flue gas produced in coking and/or sintering, the efficiency of the purification and adsorption system can be significantly increased. In the invention, the traditional technology of purifying flue gases produced under different operating conditions through an activated carbon adsorption tower after mixing in the prior art is changed, and the adsorption process is carried out on the flue gases produced under different operating conditions through an independent activated carbon adsorption unit or unit group and different Adsorption treatment schemes are used adaptively according to the characteristics of the flue gas produced under each different operating condition, so that not only the flue gas produced in each process can be processed efficiently to fully achieve the prescribed emission standard, but also a most economical technical plan for flue gas treatment. can be used and therefore the purification efficiency is high and the coating can be saved. Since flue gases are produced under various operating conditions, the components and temperature of various flue gases, etc. It is different. If the flue gases produced under different operating conditions are directly approached for purification, the purification load of the adsorption tower will be greatly increased and resources will be wasted. In the purification system of the invention, the integrated tower includes a plurality of activated carbon adsorption units or groups of units. The flue gas produced under each operating condition is processed by one or more independent activated carbon adsorption units or unit groups, and the process condition of the activated carbon adsorption unit or unit group that processes the flue gas produced under the operating condition is selected and the characteristics of the flue gas produced under each operating condition are selected. is adjusted accordingly, and an optimal adsorption medium is selected, so that the efficiency of the entire adsorption process can be improved. For example, it adjusts the residence time of activated carbon (by controlling the feed rate and discharge rate of activated carbon) and the adsorption treatment temperature in activated carbon adsorption in the activated carbon adsorption unit or unit group that processes flue gas (by controlling the feed rate and discharge rate of activated carbon), the unit or unit group that processes flue gas (by controlling the feed rate and discharge rate of activated carbon). by controlling the inlet temperature of insulation equipment, etc.), according to specific practical situations such as the pollutant contents in the flue gas, the content of various components and the temperature of the flue gas, so that pollutant deprivation can be achieved in a most economical and effective adsorption mode on the flue gas produced under all operating conditions. Therefore, treatment efficiency can be increased and treatment costs can be reduced. In the invention, two or more activated carbon adsorption units or groups of units can be flexibly selected to process the flue gas produced under an operating condition according to the amount of flue gas produced under the operating condition in the practical situation. If the amount of flue gas produced under a certain operating condition is small and one activated carbon adsorption unit or unit group is sufficient for the process, an activated carbon adsorption unit or unit group in the combined tower will be selected to purify the flue gas under the operating condition; or if the amount of flue gas under the working condition is small, under the leading] that the purification effect is guaranteed, the residence time of activated carbon in the activated carbon adsorption unit or unit group can be shortened, thus improving the adsorption process efficiency. If the amount of flue gas produced under a certain operating condition is large, two or more activated carbon adsorption units or groups of units in the integrated tower can be selected to purify the flue gas as required under the operating condition; or if the amount of flue gas under the working condition is large, the residence time of activated carbon in the activated carbon adsorption unit or unit group can be extended, so that the effect of the adsorption process can be guaranteed. Preferably, the parameters of the flue gases produced under two (or more) operating conditions, such as content, composition and temperature, etc. If they are similar, that is, the flue gases produced under two or more operating conditions are similar, according to the analysis and decision, the flue gases produced under such operating conditions can be approximated for purification. That is, after convergence, the flue gases produced under such operating conditions are transported to one or more activated carbon adsorption units or groups of units of the integrated tower. In the invention, n independent activated carbon adsorption units or unit groups process flue gases produced under operating conditions m, where the number of operating conditions producing flue gases may be the same as the number of activated carbon adsorption units or unit groups or less than the number of activated carbon adsorption units or unit groups it could be. As a preferred scheme of the invention, the number of operating conditions producing flue gases may be greater than the number of activated carbon adsorption units or groups of units, and the number of flue gases produced under the same flue gases producing operating conditions; If the components are close to each other, the flue gases are transported to activated carbon adsorption units or groups of units for processing. In addition, in the invention, flue gases produced under different operating conditions are treated independently, flue gases produced under different operating conditions are centralized to one area and entered into independent end purification and adsorption equipment, so that mutual interaction between flow areas can be prevented. , the discharge uniformity of the main process can be maintained, thus ensuring the production stability of the main process and the stable operation and safety of the final purification equipment. In the invention, the integrated tower includes a plurality of activated carbon adsorption units or groups of units and is provided in close proximity to the desorption tower. Each activated carbon adsorption unit or unit group independently purifies the flue gas produced under a flue gas and carries out the purification process independently. Each activated carbon adsorption unit or unit group operates independently and therefore a plurality of activated carbon adsorption units or units. In the invention, the pollutant content in the flue gases produced under different operating conditions and the pollutant content in the gas discharged from the gas outlet of the activated carbon adsorption unit or unit group is determined by the active carbon adsorption unit or unit group. carbon adsorption unit or unit group, the gases discharged from the gas outlets of many activated carbon adsorption units or unit groups can be discharged independently or discharged after convergence. In the invention, combined discharge means the convergence of exhaust lines connected to all gas outlets of more than one activated carbon adsorption unit or group of units and then connecting to a chimney and discharging the gas through a chimney. In the invention, independent discharge means that the exhaust line connected to the gas output of each activated carbon adsorption unit or unit group is independently connected to a chimney, that is, a chimney corresponds to the exhaust line connected to the gas output of an activated carbon adsorption unit or unit group. Or, the exhaust line connected to the gas outlet of the activated carbon adsorption unit or unit group that processes the flue gas produced under each operating condition is independently connected to a chimney, that is, a chimney corresponds to the flue gas of one operating condition. The following mode can be used in the invention: the exhaust lines of a part of the activated carbon adsorption units or unit groups among a plurality of activated carbon adsorption units or unit groups are converted into the same chimney and exhaust lines for discharge, the remaining activated carbon adsorption units or unit groups are converted into another chimney for discharge; or the exhaust lines of the remaining activated carbon adsorption unit or unit group are independently connected to the chimney for independent discharge. In the invention, after a plurality of activated carbon adsorption units or unit groups of integrated towers, for the discharged gases, according to the practical discharge situation, the flue gas treated by each activated carbon independently purifies the flue gas produced under the relevant operating condition of the adsorption unit or unit. The group can be discharged through an independent chimney, or the flue gases processed by one or more activated carbon adsorption units or unit groups can be discharged through a flue or the flue processed by all of the activated carbon adsorption units or unit groups. Gases can be discharged with a chimney. As a result, the flue gas treated by the activated carbon adsorption unit or unit group is discharged according to the practical situation and can be flexibly adjusted. In the invention, the activated carbon adsorption unit or unit group can be a single-stage adsorption tower or a multi-stage adsorption tower. Moreover, among many activated carbon adsorption units or unit groups, each activated carbon adsorption unit or unit group is not limited and independent of each other. That is, a plurality of activated carbon adsorption units or groups of units may all consist of a single-stage adsorption tower, or they may all consist of a multi-stage adsorption tower, or they may partly consist of a single-stage adsorption tower and partly consist of a multi-stage adsorption tower. Whether the activated carbon adsorption unit or unit group uses a single-stage adsorption tower or a multi-stage adsorption tower depends on the content of pollutants in the flue gas produced under a certain operating condition and the gas under the flue operating conditions, etc. can be determined according to the emission standard. The structures of the single-stage adsorption tower and multi-stage adsorption tower are the traditional structures in the prior art. In the invention, the feeding equipment controls the feeding amount and feeding rate of the activated carbon adsorption unit or unit group; The discharge equipment controls the discharge amount and discharge rate of the activated carbon adsorption unit or unit group. The feed amount, feed rate, discharge amount and discharge rate are adjusted according to the content of pollutants in the flue gas produced under the operating condition treated by the corresponding activated carbon adsorption unit or group of units. The feed amount, feed rate, discharge amount and discharge rate of each activated carbon adsorption unit or unit group meet the specific condition of flue gases under treated operating conditions, which is an advantage brought by the independent treatment of flue gases. In the invention, each activated carbon adsorption unit or unit group is an independent adsorption unit. According to the technical diagram of the invention, each activated carbon adsorption unit or unit group processes the flue gas produced under an operating condition, detects the content of pollutants in the flue gas produced under the operating condition and the flow rate of the flue gas produced under the operating condition and operating condition. obtains the flow rate of pollutants in the flue gas produced under the condition; The flow rate of activated carbon in the unit group that processes the flue gas produced under the activated carbon adsorption unit or working group is determined according to the flow rate of the pollutants in the flue gas produced under the operating condition. The flow rate (or discharge rate) of specific activated carbon in each activated carbon adsorption unit or unit group can be adjusted according to the characteristics of the flue gas by each activated carbon adsorption unit or unit group, which gas is processed under the specific operating condition and the flue produced under the operating condition. The gas is produced under the emission standard. The design according to the invention has strong adaptability and strong operability. A specific activated carbon adsorption purification process is carried out according to the specific operating condition, the characteristics of the flue gas produced under the operating condition, and the required emission standard under the operating condition. If the flue gas produced under each operating condition is treated independently and at the same time the relevant emission standard is met, the optimal flow rate of activated carbon can be used in the activated carbon adsorption unit or unit group by calculation, thus saving cost, reducing resource and energy waste, and at the same time improving the efficiency of the desorption tower. is at its most reasonable. In the invention, according to the flow rate of activated carbon in all activated carbon adsorption units or groups of units, the flow rate of activated carbon in the desorption tower can be precisely calculated, so that the desorption rate of activated carbon can be scientifically controlled, so that the entire purification system can fully cooperate, desorption and adsorption synchronously. processable, no situation arises where the activated carbon adsorption units or groups of units have to wait for the desorption tower to dissolve the activated carbon, and due to the very slow desorption of the desorption tower and the very fast desorption of the desorption tower, no situation arises where the activated carbon adsorption units or groups of units of the desorption tower have to wait for the activated carbon . By scientific calculation, the normal and cooperative operation of the desorption tower and adsorption tower can be guaranteed and scientific management can be realized. In the invention, the activated carbon adsorption unit or unit group can be precisely calculated according to the activated carbon in the activated carbon adsorption unit or unit group, the flue gas produced under a certain operating condition, the flow rate of the feeding equipment and the flow rate of the discharge equipment. Moreover, in the practical production process, after the whole purification system has been running for a period of time, the amount of activated carbon to be supplemented into the system can be obtained according to experience or determination. That is, the flow rate of activated carbon additionally added to the desorption tower can be obtained. The additionally reinforced activated carbon (i.e. new activated carbon) obtained according to experience or calculation is added to the desorption tower through the feed port of the desorption tower. In the invention, K1, K2 are constants that can be obtained or adjusted according to experience according to the ability to adsorb sulphides and nitrogen oxides with activated carbon; j is a tuning constant of the feeding equipment and discharging equipment, which can be obtained and determined according to experience. In the invention, the integrated tower includes a plurality of independent activated carbon adsorption units or groups of units. In a large number of activated carbon adsorption units or unit groups, the properties and sizes of activated carbon adsorption units or unit groups may be the same or different; The specification of the specific activated carbon adsorption unit or unit group that processes the flue gas produced under the operating condition can be designed according to the characteristics of the flue gas produced under the operating condition in the actual process. In a large number of activated carbon adsorption units or groups of units, the number of activated carbon layers and the thickness of activated carbon, the size of the air inlet and gas outlet, and the location of the air inlet and gas outlet, etc. It can be adjusted as practically required in 1 activated carbon adsorption unit or group of units. In a plurality of activated carbon adsorption units or unit groups, the height and width of activated carbon adsorption units or unit groups may be the same or different. The cross-section of the integrated tower can be a rectangle or a circle; or the shape may be determined by each activated carbon adsorption unit or group of units in the integrated tower. The cross-section of the activated carbon adsorption unit or group of units may be a rectangle or circle, or other shapes. In the invention, n independent activated carbon adsorption units or unit groups are provided tightly, which means: all activated carbon adsorption units or unit groups are designed as a whole, there is no gap between the activated carbon adsorption units or unit groups, and the activated carbon adsorption units or unit groups contacts firmly; That is, the outer walls of activated carbon adsorption units or unit groups touch each other or the same side wall is shared by neighboring activated carbon adsorption units or unit groups. There is a gap between each of the n independent activated carbon adsorption units or unit groups, which means the following: each activated carbon adsorption unit or unit group is independent of each other, the outer part of each activated carbon adsorption unit or unit group contacts the air, adjacent activated carbon adsorption units or groups of units do not contact each other and there is a gap between adjacent activated carbon adsorption units or groups of units. In the invention, the first activated carbon conveying equipment and the second activated carbon conveying equipment may have an integrated structure, respectively, or may be a conveying equipment consisting of a plurality of conveying devices. That is, the first activated carbon conveying equipment (or the second activated carbon conveying equipment) can be driven by an electric motor, and the entire conveying orbit has a Z-shaped structure or a reverse Z-shaped structure; The first activated carbon conveying equipment (or the second activated carbon conveying equipment) can also be driven by more than one electric motor, where each electric motor drives a segment of a conveying device, and each segment of the conveying device has a straight line structure or a curve structure. That is, the first activated carbon transport equipment (or the second activated carbon transport equipment) may use any structure in the prior art and may have an integrated structure or a combined structure. In the invention, the activated carbon adsorption unit or unit group can be a single-stage activated carbon adsorption unit or unit group, or it can be a two-stage or multi-stage activated carbon adsorption unit or unit group. Or one or more (or all) activated carbon adsorption units or groups of units between n activated carbon adsorption units or units are connected in series with the secondary adsorption tower; That is, after the flue gases are respectively treated by activated carbon adsorption units or unit groups, the gases discharged from the gas outlets of one or more activated carbon adsorption units or unit groups can be transferred independently or after convergence, through the secondary adsorption tower for processing (i.e. secondary activated carbon adsorption tower) passes. In the invention, according to the characteristics of the flue gas, the flue gas can be discharged from the chimney after being treated by the activated carbon adsorption unit or unit group, where the activated carbon adsorption unit or unit group, single-stage activated carbon adsorption unit or unit group, or two-stage or multi-stage activated carbon It can be an adsorption unit or a group of units. Moreover, after the flue gases are processed by activated carbon adsorption units or unit groups, the gases discharged from the gas outlets of n activated carbon adsorption units or unit groups are reprocessed by a secondary adsorption tower or further gases from one or n activated carbon adsorption units or unit groups The effluent is retreated with a second adsorption tower. Furthermore, the gases discharged from one or more gas outlets of n activated carbon adsorption units or unit groups are purified again by a secondary adsorption tower, and the gases discharged from the gas outlets of the remaining activated carbon adsorption units or unit groups are purified again by an additional independent secondary adsorption tower. is subjected to processing. In the invention, the activated carbon adsorption unit or unit group and the secondary adsorption tower are similar to the prior art activated carbon adsorption tower, and the internal structure is the same as the prior art activated carbon adsorption tower. Generally, in a plurality of activated carbon adsorption units or unit groups, the height of the activated carbon adsorption unit or unit group is 10-50 m, preferably 15-40 m, and more preferably 18-30 m. The cross-sectional area of the activated carbon adsorption unit or unit group is more preferably 5-10 m. Or, the diameter of the cross-sectional area of the activated carbon adsorption unit or unit group is 1-10 m, preferably 2-8 m and more preferably 3-6 m. Compared to the prior art, the technical scheme of the invention has the following beneficial technical effects: 1) The treatment system simultaneously treats flue gases produced in multiple operating conditions, where the treatment system includes an integrated tower and a desorption tower, the integrated tower consisting of a plurality of activated carbon adsorption units or It includes the unit group, and the integrated tower and the desorption tower are provided in the same area, and therefore the complete transport and transportation of activated carbon can be achieved by transporting the activated carbon between the integrated tower and the desorption tower by means of two activated carbon conveying equipment; 2) With independent processing of flue gas in the technical scheme of the invention, the design can be flexibly adapted for different contents of pollutants and different emission standards for the flue gas produced in each process; and 3) In the invention, different adsorption treatment schemes are adaptively used according to the characteristics of the flue gas produced under each different operating condition, so that not only the flue gas produced in each process can be efficiently processed to fully reach the prescribed emission standard, but also for the flue gas treatment A most economical technical plan can be used, the treatment efficiency is high and the coating can be saved. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings necessary for the description of the art of the embodiments will be briefly introduced below. Apparently, the drawings in the following description are only some embodiments of the invention, and other drawings can be obtained by those of ordinary skill in the art without any creative drawings. Figure 1 is a structural representation of a prior art activated carbon flue gas purification system; Figure 2 is a structural representation of a centralized and independent multi-operating flue gas purification system according to the invention; Figure 3 is a structural representation of each activated carbon adsorption unit or group of units in the integrated tower according to the invention (a cross-sectional view along A-A in Figure 1); Figure 4 is a structural representation showing the combined discharge of all activated carbon adsorption units or groups of units in the integrated tower according to the invention; Figure 5 is a structural representation showing an integrated tower according to the invention, where two activated carbon adsorption units or groups of units are used for an operating condition and the activated carbon adsorption units or groups of units discharge independently; Figure 6 is a structural representation showing an integrated tower according to the invention, wherein two activated carbon adsorption units or groups of units are used for one operating condition and the activated carbon adsorption unit or group of units is discharged independently, purifying the flue gas produced under each operating condition; Figure 7 is a structural representation showing an integrated tower according to the invention, wherein two activated carbon adsorption units or unit groups are used for an operating condition and the activated carbon adsorption units or unit groups discharge the flue gas in combination; Figure 8 is a process flow chart showing the independent discharge of flue gas in a centralized and independent multiple operating condition flue gas purification system according to the invention; Figure 9 is a process flow chart showing the combined discharge of flue gas in a centralized and independent multiple operating condition flue gas purification system according to the invention; Figure 10 is a process flow chart of a centralized and independent multiple operating condition flue gas purification system according to the invention, wherein two activated carbon adsorption units or groups of units are used for one operating condition and the activated carbon adsorption unit or groups of units discharge the flue gas independently; Figure 11 is a process flow diagram of a centralized and independent multi-operating condition flue gas purification system according to the invention, where two activated carbon adsorption units or groups of units are used for one operating condition and the activated carbon adsorption unit or unit treats the flue gas produced under each operating condition. The group discharges flue gas independently; Figure 12 is a process flow chart of a centralized and independent multi-operating condition flue gas purification system according to the invention, wherein two activated carbon adsorption units or unit groups are used for one operating condition and all activated carbon adsorption units or unit groups discharge the flue gas combined; Figure 13 is a flow chart showing the calculation of activated carbon in a centralized and independent purification method for flue gas with multiple operating conditions according to the invention; and Figure 14 is a flow chart showing the control of activated carbon in a centralized and independent purification method for flue gas with multiple operating conditions according to the invention. Reference notations in the figures: 1: Integrated Tower; 101: Independent Activated Carbon Adsorption Unit or Unit Group; 10101: Supply Port; 10102: Discharge Port; 10103: Air inlet; 10104: Gas Release; 2: Desorption Tower; 3: Chimney; 4: Feeding Equipment; : Discharge Equipment; Pl: First Activated Carbon Transport Equipment; PZ: Second Activated Carbon Transport Equipment; L: Flue Gas Transport Pipe; La: First Flue Gas Transport Pipe; Lb: Second Flue Gas Transport Pipe; Lc: Third Flue Gas Transport Pipe; Lex: Exhaust Line. DETAILED DESCRIPTION According to a first embodiment of the invention, there is a central and independent multi-working condition flue gas purification system. The centralized and independent multi-operation flue gas purification system includes: an integrated tower (1), a desorption tower (2), a first activated carbon transport equipment (P1), a second activated carbon transport equipment (P2) and a chimney. gas transport pipe (L). Figure 1. includes a plurality of independent activated carbon adsorption units or groups of units (101) provided in parallel. A supply port (10101) is located at the top of each independent activated carbon adsorption unit or unit group (101), and a discharge port (10102) is located at the bottom of each independent activated carbon adsorption unit or unit group (101). The discharge ports (10102) of all activated carbon adsorption units or unit groups (101) are connected to the feed port of the desorption tower (2) via a first activated carbon transport equipment (P1). The discharge port of the desorption tower (2) is connected to the feeding port (10101) of each activated carbon adsorption unit or unit group (101) through a second activated carbon transport equipment (PZ). Among the flue gases produced under more than one operating condition, the flue gases produced under each operating condition are fed independently to the air inlets (10103) of one or more independent activated carbon adsorption units or unit groups (101), respectively, through flue gas transport pipes (L). Preferably, the system also includes an exhaust line (Lex) and a chimney (3). The gas outlet (10104) of each activated carbon adsorption unit or unit group (101) is connected to an exhaust line (Lex). The exhaust line (Lex) is connected to the chimney (3). Preferably, the exhaust lines (Lex) connected to the gas outlets (10104) of all activated carbon adsorption units or unit groups (101) are brought close together and then connected to the chimney for combined discharge. Preferably, the exhaust lines (Lex) connected to the gas outlets of one or more independent activated carbon adsorption units or unit groups (101) are connected to a chimney (3) for independent discharge. In the invention, the integrated tower of the system (l) includes n independent activated carbon adsorption units or unit groups (101) that produce flue gases and m operating conditions, among the flue gases produced under m operating conditions, the flue gas produced under each operating condition is an independent flue gas transporter. There are h independent active carbon adsorption units or units (n-m + 1) through the pipe. Preferably, the exhaust lines (Lex) connected to the gas outlets (10104) of n independent activated carbon adsorption units or unit groups are connected to j chimneys (3); here is lsjgn. Preferably, the n independent activated carbon adsorption units or unit groups 101 are provided tightly or there is a gap between each of the n independent activated carbon adsorption units or unit groups 101. Preferably, the adjacent activated carbon adsorption units or units. Preferably, the integrated tower of the system (1) includes three or four independent activated carbon adsorption units or groups of units (101). Flue gases are produced under three operating conditions: operating condition A, operating condition B and operating condition C, respectively. Flue gas produced under operating condition A. It is connected to the air inlet (10103) of an independent activated carbon adsorption unit or unit group (101) via the first flue gas transport pipe (La). The flue gas produced under operating condition B is connected to the air inlets (10103) of one or two independent activated carbon adsorption units or unit groups (101) through the second flue gas carrier (Lb). The flue gas produced under operating condition C is connected to the air inlet (10103) of an independent activated carbon adsorption unit or unit group (101) through the third flue gas transport pipe Le. Exhaust lines (Lex) connected to an activated carbon adsorption unit or unit group (101) that processes the flue gas produced under an operating condition A are connected to a chimney (3). Exhaust lines (Lex) connected to one or two activated carbon adsorption units or unit groups (101) that process the flue gas produced under an operating condition B are connected to a chimney (3). Exhaust lines (Lex) connected to an activated carbon adsorption unit or unit group (101) that processes the flue gas produced under an operating condition C are connected to a chimney (3). Preferably, the first active carbon transport equipment (P1) and the second active carbon transport equipment (PZ) are belt conveyors. Preferably, the first activated carbon conveying equipment (P1) and the second activated carbon conveying equipment (P2) are Z-shaped or inverted Z-shaped integrated conveyors, or the first activated carbon conveying equipment (P1) and the second activated carbon conveying equipment (P2), respectively It includes a large number of transport devices. Preferably, the activated carbon adsorption unit or unit group (101) is independently a single-stage activated carbon adsorption unit or unit group or a multi-stage activated carbon adsorption unit or unit group. Preferably, exhaust lines (Lex) connected to the gas outlets 10104 of the l-n activated carbon adsorption units or unit groups 101 in the 11 activated carbon adsorption units or unit groups 101 are connected to a secondary adsorption tower and then to the gas outlet of the secondary adsorption tower It is connected to the chimney (3). Preferably, the system also includes a feeding equipment (4) and a discharging equipment (5). There is a feed equipment (4) above each activated carbon adsorption unit or unit group (101). The second activated carbon transport equipment (PZ) is connected to the feed port (10101) of each activated carbon adsorption unit or unit group (101) via an independent feeding equipment (4). The discharge port (10102) of each activated carbon adsorption unit or unit group (101) is equipped with a discharge equipment (5). The discharge port of the activated carbon adsorption unit or unit group (101) is connected to the first activated carbon transport equipment (Pl) via the discharge equipment (5). Generally, in a plurality of activated carbon adsorption units or unit groups, the height of the activated carbon adsorption unit or unit group is 10-50 m, preferably 15-40 m, and more preferably 18-30 m. The cross-sectional area of the activated carbon adsorption unit or unit group is more preferably 5-10 m. Or, the diameter of the cross-sectional area of the activated carbon adsorption unit or unit group is 1-10 m, preferably 2-8 m and more preferably 3-6 m. Application 1 As shown in Figure 2, the centralized and independent multi-operation flue gas purification system includes: an integrated tower (1), a desorption tower (2), a first active carbon transport equipment (Pl), a second active carbon transport equipment (P2) and a flue gas transport pipe (L). Figure 1 includes four independent activated carbon adsorption units or unit groups (101) provided in parallel. There is a feeding port (10101) at the bottom, and a discharge port (10102) is located at the bottom of each individual activated carbon adsorption unit or unit group. The discharge ports (10102) of all activated carbon adsorption units or unit groups (101) provide a first activated carbon transport equipment. It is connected to the feed port of the desorption tower (2) via (Pl). The discharge port of the desorption tower (2) is connected to the feed port (10101) of each active carbon adsorption unit or unit group (101) through a second activated carbon transport equipment (P2). . The system also includes a feeding equipment (4) and a discharging equipment (5). The top of each activated carbon adsorption unit or unit group (101) is equipped with a feeding equipment (4), and the second activated carbon transport equipment (PZ) is connected to the feeding port of each activated carbon adsorption unit or unit group (101), an independent feeding equipment It is connected via (4). The discharge port of each activated carbon adsorption unit or unit group (101) is provided with a discharge device (5), and the discharge port of the activated carbon adsorption unit or unit group (101) is connected to the first activated carbon transport equipment (Pl) through the discharge device (5). connects. Among the flue gases produced under more than one operating condition, the flue gas produced under each operating condition is connected independently to the air inlets (10103) of one or more independent activated carbon adsorption units or unit groups (101), respectively, through the flue gas transport pipe (L). The system also includes an exhaust line (Lex) and a chimney (3). The gas outlet (10104) of each activated carbon adsorption unit or unit group (101) is connected to an exhaust line (Lex). The exhaust line (Lex) is connected to the chimney (3). Application 2 As shown in Figure 37, the centralized and independent multi-operation flue gas purification system includes: an integrated tower (1), a desorption tower (2). a first activated carbon transport equipment (P1), a second activated carbon transport equipment (P2) and a flue gas transport pipe (L). Figure 1 includes three independent activated carbon adsorption units or groups of units 101 provided in parallel. A supply port (10101) is located at the top of each independent activated carbon adsorption unit or unit group (101), and a discharge port (10102) is located at the bottom of each independent activated carbon adsorption unit or unit group. The discharge ports (10102) of all activated carbon adsorption units or unit groups (101) are connected to the feed port of the desorption tower (2) via a first activated carbon transport equipment (P1). The discharge port of the desorption tower (2) is connected to the feeding port (10101) of each activated carbon adsorption unit or unit group (101) through a second activated carbon transport equipment (PZ). The system also includes a feeding equipment (4) and a discharging equipment (5). The top of each activated carbon adsorption unit or unit group (101) is equipped with a feeding equipment (4), and the second activated carbon transport equipment (PZ) is connected to the feeding port of each activated carbon adsorption unit or unit group (101), an independent feeding equipment It is connected via (4). The discharge port of each activated carbon adsorption unit or unit group (101) is provided with a discharge device (5), and the discharge port of the activated carbon adsorption unit or unit group (101) is connected to the first activated carbon transport equipment (Pl) through the discharge device (5). connects. The flue gas produced under three operating conditions is independently connected to the air inlets (10103) of one or more independent activated carbon adsorption units or unit groups (101), respectively, through the flue gas transport pipe (L). The system also includes an exhaust line (Lex) and a chimney (3). The gas outlet (10104) of each activated carbon adsorption unit or unit group (101) is connected to an exhaust line (LeX). Each exhaust line (Lex) is independently connected to an independent chimney (3) for independent evacuation. Embodiment 3 is repeated except that the gas outlets 10104 of the three activated carbon adsorption units or unit groups 101 are all connected by an exhaust line (LeX), as shown in Figure 4. The 3 exhaust lines (Lex) converge and then connect to a chimney (3) for combined discharge. Application 4 As shown in Figure 5, the centralized and independent multi-operated flue gas purification system includes: an integrated tower (1), a desorption tower (2), a first active carbon transport equipment (Pl), a second active carbon transport equipment (P2) and a flue gas transport pipe (L). Figure 1 includes four independent activated carbon adsorption units or groups of units 101 provided in parallel. A supply port (10101) is located at the top of each independent activated carbon adsorption unit or unit group (101), and a discharge port (10102) is located at the bottom of each independent activated carbon adsorption unit or unit group. The discharge ports (10102) of all activated carbon adsorption units or unit groups (101) are connected to the feed port of the desorption tower (2) via a first activated carbon transport equipment (P1). The discharge port of the desorption tower (2) is connected to the feeding port (10101) of each activated carbon adsorption unit or unit group (101) through a second activated carbon transport equipment (P2). The system also includes a feeding equipment (4) and a discharging equipment (5). The top of each activated carbon adsorption unit or unit group (101) is equipped with a feeding equipment (4), and the second activated carbon transport equipment (PZ) is connected to the feeding port of each activated carbon adsorption unit or unit group (101), an independent feeding equipment It is connected via (4). The discharge port of each activated carbon adsorption unit or unit group (101) is provided with a discharge device (5), and the discharge port of the activated carbon adsorption unit or unit group (101) is connected to the first activated carbon transport equipment (Pl) through the discharge device (5). connects. Three operating conditions produce flue gases, where the flue gas produced under the first operating condition (operating condition A) is connected to the air inlet (10103) of an independent activated carbon adsorption unit or unit group (101) through the first flue gas transport pipe (La); The flue gas produced under the second operating condition (operating condition B) is connected to the air inlets (10103) of two independent activated carbon adsorption units or unit groups (101) through the second flue gas transport pipe (Lb); and the flue gas produced under the third operating condition (operating condition C) is connected to the air inlet (10103) of an independent activated carbon adsorption unit or unit group (101) through a third independent flue gas transport pipe (Lo). The exhaust line (Lex), which is connected to an activated carbon adsorption unit or unit group (101) that processes the flue gas produced under the first operating condition, is connected to a chimney (3). The exhaust lines (Lex) connected to two active carbon adsorption units or unit groups (101) that process the flue gas produced under the second operating condition are independently connected to two independent chimneys (3), respectively. The exhaust line (Lex), which is connected to an active carbon adsorption unit or unit group (101) that processes the flue gas produced under the third operating condition, is connected to a chimney (3). Application 5 Repeats Application 4, as shown in Figure 6. However, the exhaust line (Lex), which is connected to an active carbon adsorption unit or unit group (101) that processes the flue gas produced under the first operating condition, is connected to a chimney (3). Exhaust lines (Lex) connected to two active carbon adsorption units or unit groups (101) that process the flue gas produced under the second operating condition are brought close to each other and then connected to a chimney (3). The exhaust line (Lex), which is connected to an active carbon adsorption unit or unit group (101) that processes the flue gas produced under the third operating condition, is connected to a chimney (3). Application 6 As shown in Figure 7, Application 4 is repeated but with four exhaust lines (Lex), i.e. the first exhaust line (Lex) connected to an activated carbon adsorption unit or unit group (101) that processes the flue gas produced under the operating condition, the second It is connected to two activated carbon adsorption units or unit groups (101) that treat the flue gas produced under the operating condition, and the third is connected to an activated carbon adsorption unit or unit group (101) that treats the flue gas produced under the exhaust gas then to a chimney (3) for combined discharge ) is connected. Application 7 Application 4 is repeated, except that the exhaust lines between the four independent activated carbon adsorption units or unit groups (101) connected to the two activated carbon adsorption units or unit groups (101) are connected to a secondary adsorption tower and (Lex), the remaining two active The carbon adsorption unit or unit group (100) is connected to the chimney (3). Application 8 Application 4 is repeated. However, the exhaust lines connected to four independent activated carbon adsorption units or unit groups (101) are respectively connected to an independent secondary adsorption tower, and the gas outlet of the secondary adsorption tower is connected to the chimney (3). Application 9 Application 4 is repeated, but the exhaust lines (Lex) connected to 4 independent activated carbon adsorption units or groups of units (101) are brought closer together and then connected to a secondary adsorption tower, and the gas outlet of the secondary adsorption tower is connected to the chimney (3). Application 10 As shown in Figure 8, the Application 2 method is used, which includes the following steps: 1) The integrated tower in the flue gas treatment system includes three activated carbon adsorption units or groups of units (101) and a desorption tower (2); wherein three activated carbon adsorption units or groups of units (100) are provided independently of each other and in parallel; 2) Flue gases are produced under three operating conditions, the flue gas produced under each operating condition is transported to the active carbon adsorption units or unit groups (101) through the flue gas transport pipes (L) and the activated carbon adsorption unit or unit group (101), respectively The flue gas carried through the connected flue gas transport pipe (L) and the flue gas processed by the activated carbon adsorption unit or unit group (101) are discharged from the gas outlet (10104) of the activated carbon adsorption unit or unit group (101); 3) The activated carbon absorbing the flue gas in each activated carbon adsorption unit or unit group (100) is transported from a discharge port to the desorption tower (2) by means of a first active carbon transport equipment (P1); The activated carbon absorbing the flue gas is desorbed and activated in the desorption tower (2), then discharged from the discharge port of the desorption tower (2), and then a second activated carbon conveying equipment is sent to the feeding port of each activated carbon adsorption unit or group of units (101). It is transported through (PZ); The purified flue gases discharged from the gas outlets of the three activated carbon adsorption units or unit groups (101) are discharged through three independent chimneys. Embodiment 8 As shown in Figure 9, the method in Embodiment 3 is used and Embodiment 7 is repeated, but the treated flue gases discharged from the gas outlets of three activated carbon adsorption units or groups of units (101) are combined and then discharged into combination. Application 1 1 As shown in Figure 10, the Application 4 method is used, which includes the following steps: 1) The integrated tower in the flue gas treatment system has four activated carbon adsorption units or groups of units (101) and a desorption tower (2); wherein four activated carbon adsorption units or groups of units (101) are provided independently of each other and in parallel; Three operating conditions produce flue gases, where the flue gas produced under the first operating condition (operating condition A) is connected to the air inlet (10103) of an independent activated carbon adsorption unit or unit group (101) through the first flue gas transport pipe (La); The flue gas produced under the second operating condition (operating condition B) is connected to the air inlets (10103) of two independent activated carbon adsorption units or unit groups (101) through the second flue gas transport pipe (Lb); and the flue gas produced under the third operating condition (operating condition C) is connected to the air inlet (10103) of an independent activated carbon adsorption unit or unit group (101) through a third independent flue gas transport pipe (LC); The activated carbon adsorption unit or unit group (101) carries out an adsorption process on the flue gas transported through the connected flue gas transport pipe (L), respectively, and the flue gas treated by the activated carbon adsorption unit or unit group (101) contains activated carbon is discharged through the gas outlet (10104) of the adsorption unit or unit group (101); and The activated carbon absorbing the flue gas in each activated carbon adsorption unit or unit group (101) is transported to the desorption tower (2) from a discharge port by means of a first active carbon transport equipment (P1); The activated carbon absorbing the flue gas is desorbed and activated in the desorption tower (2), then discharged from the discharge port of the desorption tower (2), and then a second activated carbon conveying equipment is sent to the feeding port of each activated carbon adsorption unit or group of units (101). It is transported via (P2); The flue gas produced under the first operating condition is discharged through a chimney (3) after being processed by an activated carbon adsorption unit or unit gmbu (101); The flue gas produced under the second operating condition is discharged through two independent chimneys (3) after being processed by two active carbon adsorption units or unit groups (101); and the flue gas produced under the third operating condition is discharged through a chimney (3) after being processed by an activated carbon adsorption unit or unit group (101). Embodiment 12 As shown in Figure 11, the method of Embodiment 5 is used and Embodiment 11 is repeated, but here the flue gas produced under the first operating condition is processed by an activated carbon adsorption unit or group of units 101 and then passed through a chimney 3. is evacuated; The flue gas produced under the second operating condition is discharged through two independent chimneys (3) after being processed by two active carbon adsorption units or unit groups (101); and the flue gas produced under the third operating condition is discharged through a chimney (3) after being processed by an activated carbon adsorption unit or unit group (101). Application 13 As shown in Figure l2, the method of Application 6 is used and Application 11 is repeated except that the flue gas produced under the first operating condition is treated after the flue with an activated carbon adsorption unit or group of units (101), while the gases produced under the second operating condition are treated with two active It is treated with the carbon adsorption unit or unit group (101), and after the flue gas produced under the third operating condition is treated with an activated carbon adsorption unit or unit group (101), the gases discharged from the gas are combined at the outlets of the activated carbon adsorption units or unit groups (101). and then connected to a chimney (3) for combined discharge. Application 14 Embodiment 7 is repeated, but step 3) specifically as follows: each activated carbon adsorption unit or group of units processes the flue gas produced under an operating condition, determines the content of pollutants in the flue gas produced under the operating condition and the flue gas produced under detects the flow rate of the gas, obtains the operating condition and the flow rate of the contaminants in the flue gas produced under the operating condition; The flow rate of activated carbon in the unit group that processes the flue gas produced under the activated carbon adsorption unit or working group is determined according to the flow rate of the pollutants in the flue gas produced under the operating condition. The flow rate of pollutants in the flue gas is calculated by the following formulas: Q :4_l 5 where Qsi, i, kg / hour is the flow rate of the pollutant SOz in the flue gas produced under the operating condition Cgi, is the content of 802 pollutants in the flue gas produced under the operating condition i, mg/Nm3; QNi, i, kg/h is the flow rate of pollutant NOx in the flue gas produced under the operating condition; CNI is the content of NOX pollution in the flue gas produced under operating condition i, mg/Nm3; Vi is the flow rate of flue gas produced under the operating condition of i, Nm3/hour; and i is the sequence number of the operating condition, i = 1 ~ 3. The flow rate of activated carbon in each activated carbon adsorption unit or unit group processing the flue gas produced under the operating condition (101) is determined according to the following formula: where Qxi, i, kg / h in each activated carbon adsorption unit or unit processing the flue gas produced under the operating condition is the flow rate of activated carbon in group (101); hi,i is the number of active carbon adsorption units or unit groups (101) that process the flue gas produced under the operating condition i with the value l; and K1 becomes 18; and K2 becomes 3. The flow rate of activated carbon in the desorption tower (2) is as follows: QX : Z QXI Qxi is the flow rate of activated carbon in each activated carbon adsorption unit or group of units (101) that processes the flue gas produced under the operating condition of i, kg/h; Qsupp is the flow rate of activated carbon added to the desorption tower, determined in kg/h; biji is the number of active carbon adsorption units or unit groups (101) that process the flue gas produced under the operating condition with the value l; and i is the sequence number of the operating condition, i = 1 ~ 3. According to the flow rate of the active carbon adsorption unit operating in the flue gas produced under the operating condition, or the activated carbon in the unit group (101) carried by the second group, activated carbon transport equipment (PZ), Qxi - is controlled as . Application 15 Regulation 11 is repeated, but step 3) specifically as follows: detect the content of pollutants in the flue gas produced under the operating condition and the flow rate of the flue gas produced under the operating condition, obtain the operating condition and the flow rate of the pollutants in the flue gas produced under the operating condition; The flow rate of activated carbon in the unit group (101) that processes the flue gas produced under the activated carbon adsorption unit or working group is determined according to the flow rate of pollutants in the flue gas produced under the operating condition. The flow rate of pollutants in the flue gas is calculated according to the following formulas: where Qsi is the flow rate of the pollutant SOz in the flue gas produced under the operating condition i, kg / h Cgi is the content of pollutant 802 in the flue gas produced under the operating condition i, mg/Nm3; QNi, i, kg/h is the flow rate of pollutant NOx in the flue gas produced under the operating condition; CNI is the content of NOX pollutant in the flue gas produced under operating condition i, mg/Nm3; Vi is the flow rate of flue gas produced under the operating condition of i, Nm3/hour; and i is the sequence number of the operating condition, i = 1 ~ 3. The flow rate of activated carbon in each activated carbon adsorption unit or unit group processing the flue gas produced under the operating condition (101) is determined according to the following formula: where Qxi, i, kg / h in each activated carbon adsorption unit or unit processing the flue gas produced under the operating condition is the flow rate of activated carbon in group (101); hi is the number of activated carbon adsorption units or unit groups (101) that process the flue gas produced under the operating condition i; where h is 1 when the first operating condition (operating condition A) is processed; When the second operating condition (operating condition B) is processed, h is 2; and when the third operating condition (operating condition C) is processed, h is 1; K1 becomes 18; and K; becomes 3. The flow rate of activated carbon in the desorption tower (2) is as follows: QX : î QXi QXi is the flow rate of activated carbon in each activated carbon adsorption unit or group of units (101) that processes the flue gas produced under the operating condition of i, kg/h; Qsupp is the flow rate of activated carbon added to the desorption tower, determined in kg/h; hi is the number of activated carbon adsorption units or unit groups (101) that process the flue gas produced under the operating condition i; where h is 1 when the first operating condition (operating condition A) is processed; When the second operating condition (operating condition B) is processed, h is 2; and when the third operating condition (operating condition C) is processed, h is 1; i is the sequence number of the operating condition, i = 1 ~ 3. According to the flow rate of activated carbon in the activated carbon adsorption unit or unit group that processes the flue gas produced under the operating condition, the activated carbon transport equipment (P2) is designated as Qxi, according to the flow rate of the activated carbon in the activated carbon adsorption unit or unit group (101) carried by the second group. Is controlled. Embodiment 16 Embodiment 14 is repeated, but here the flow rate of a feeding equipment and a discharge equipment of each activated carbon adsorption unit or group of units (101) that processes the flue gas produced under the operating condition depends on the flow rate of the activated carbon in each activated carbon adsorption unit or working working condition. It is determined according to the flue gas produced under the conditions. The flow rate of the feeding equipment and discharge equipment of each activated carbon adsorption unit or unit group (101) that processes the flue gas produced under the operating condition is determined according to the following formula: Qiýfeied : Qi* Ilwchurye : QXI X .7 where Qi_feed, i, kg / hour is the flow rate of the feeding equipment of each activated carbon adsorption unit or unit group (101) that processes the flue gas produced under the operating condition; It is the flow rate of the discharge equipment that processes the flue gas produced under its operating condition; Qxi is the flow rate of activated carbon in each activated carbon adsorption unit or group of units (101) that processes the flue gas produced under the operating condition of i, kg/h; j is a tuning constant and j is l. Application 17 Application 16 is repeated and the Application 5 system is used, but the flue gas produced in the four operating conditions of the system is treated, K1 is 16, K2 is 4 and j is 0.9. Application 18 The existing operating processes of a particular iron and steel plant are used, including a coking process, a sintering process and an ironmaking process; Three activated carbon adsorption units or groups of units and one desorption tower are provided, wherein three activated carbon adsorption units or groups of units are provided in parallel. Flue gases produced in the coking process, sintering process and iron-making process are independently transported to an activated carbon adsorption unit or unit group for purification, respectively. The pollutant adsorbed activated carbon in the activated carbon adsorption unit or unit group is desorbed and activated by the desorption tower, and then the activated carbon adsorption unit or unit group is converted. The sulfur dioxide content in the flue gas produced in the coking process is 96 mg / Nm3 and the nitrogen oxide content is 830 mg / Nm3; and the flow rate of flue gas produced in the coking process is 2 X 106 Nm3 / s. By calculation, the following is obtained: the flow rate of sulfur dioxide (Qsmkmg) in the flue gas in the process 192 kg/h; The flow rate of nitrogen oxides in the process flue gas (Qmcoking) is 1660 kg/h. It is obtained by calculating that the flow rate of activated carbon (Qx_cokmg) in the activated carbon adsorption unit or unit group that processes the flue gas produced in the coking process is 8436 kg / hour. The sulfur dioxide content in the flue gas produced in the sintering process is 1560 mg / Nm3 and the nitrogen oxide content is 360 mg / Nm3; and the flow rate of flue gas produced in the sintering process is 1.3 x 106 Nm3/s. By calculation, the following is obtained: the flow rate of sulfur dioxide (QS-sintering) in the flue gas in the process 20280 kg / h; The flow rate of nitrogen oxides in the process flue gas (QMImÜmg) is 4680 kg / hour. It is obtained by calculating that the flow rate of activated carbon (Qx_simcring) in the active carbon adsorption unit or unit group that processes the flue gas produced in the sintering process is 3.8<105 kg/hour. The sulfur dioxide content in the flue gas produced in the iron production process is 112 mg / Nm3 and the nitrogen oxide content is 78 mg / Nm3; and the flow rate of flue gas (high temperature furnace) produced in the iron producing process is 2 X 106 Nm3/s. It is obtained by calculating that in the flue gas of the process, the flow rate of sulfur dioxide (Qs-imnmaking) is 224 kg / hour and the flow rate of nitrogen oxide (Qs_imnmaking) is 156 kg / 5. It is obtained by calculating that the flow rate of activated carbon (Qx_imnmaking) in the activated carbon adsorption unit or unit group that processes the flue gas produced in iron production is 4500 kg / hour. The flow rate of activated carbon in the desorption tower is the sum of Qx_cokjng, Qx-5imering and Qx-jr0nmaking plus additionally supplemented activated carbon (Qsupp); (Qsupp) is usually 600 kg/h. After the flue gases produced in the coking process, the sintering process and the iron-making process are purified by the system and the method according to the invention, the gases discharged from the gas outlets of the three activated carbon adsorption units or groups of units are detected; where in the gases discharged through the gas outlet of the activated carbon adsorption unit or unit group that processes the flue gas produced in the coking process, the sulfur dioxide content is 26 mg / Nm3 and the nitrogen oxide content is 124 mg / Nm3; In the gases discharged through the gas outlet of the activated carbon adsorption unit or unit group operating [the flue gas produced in the sintering process], the sulfur dioxide content is 33 mg / Nm3 and the nitrogen oxide content is 97mg / Nm3; In the gases discharged through the gas outlet of the activated carbon adsorption unit or unit group that processes the flue gas produced in the iron production process, the sulfur dioxide content is 31 mg / Nm3 and the nitrogen oxide content is 49 mg / Nm3; The gases discharged from the gas outlets of the three activated carbon adsorption units or unit groups all meet national emission standards and can therefore be discharged.TR TR TR TR

Claims (4)

CLAIMS It is a central and independent flue gas purification system with multiple operating conditions. Its feature is; comprising: an integrated tower (1), a desorption tower (2), a first active carbon transport equipment (P1), a second active carbon transport equipment (P2) and flue gas transport pipes (L); wherein the integrated tower (1) includes a plurality of independent active carbon adsorption units or groups of units (101) provided in parallel; the top of each independent activated carbon adsorption unit or unit group (101) is provided with a supply port (10101) and the bottom of each independent activated carbon adsorption unit or unit group (101) is provided with a discharge port (10102); The discharge ports (10102) of all activated carbon adsorption units or groups of units (101) are connected to a feed port of the desorption tower (2) through the first activated carbon transport equipment (P1), a discharge port of the desorption tower (2) is connected to a feed port of each activated carbon adsorption unit. or it is connected to the supply port (1010) of the unit group (101) via the second activated carbon transport equipment (P2); Among the flue gases produced under multiple operating conditions, the flue gas produced under each operating condition is respectively independently connected to an air inlet (10103) of one or more independent activated carbon adsorption units or unit groups (101) through the flue gas transport pipe (L). It is a system according to claim 1 and its feature is; comprising: exhaust lines (Lex) and chimneys (3), wherein a gas outlet (10104) of each activated carbon adsorption unit or group of units (101) is connected to an exhaust line (Lex), and the exhaust line (Lex) is connected to a chimney ( 3) connects; or the exhaust lines (Lex) to which the gas outlets (10104) of all activated carbon adsorption units or unit groups (101) are connected are combined and then connected to a chimney (3) for combined discharge; or the exhaust lines (Lex) to which the gas outlets of one or more independent activated carbon adsorption units or unit groups (101) are connected, are independently connected to a chimney (3) for independent evacuation. It is a system according to claim 1 or 2 and its feature is; The system (l) contains n independent active carbon adsorption units or unit groups (101) whose integrated tower produces flue gases and m operating conditions, and the flue gas produced under each operating condition is transferred independently through a flue gas transport pipe. It is the presence of 11 independent activated carbon adsorption units or unit groups (10 + 1). It is a system according to claim 1 and its feature is; n connecting the exhaust lines (Lex) connected to the gas outlets (10104) of the independent activated carbon adsorption unit or unit group to j chimneys (3); where lSjSn; and/or providing n independent activated carbon adsorption units or unit groups (101) tightly or providing a gap between each of n independent activated carbon adsorption units or unit groups (101); or the space between adjacent activated carbon adsorption units or unit groups (101) is 10-5000 cm, it is a system according to Claim 4, and its feature is; wherein the integrated tower (1) of the system includes three or four independent activated carbon adsorption units or groups of units (101); producing flue gases under three operating conditions: operating condition A, operating condition B and operating condition C, respectively; wherein the flue gas produced under operating condition A is conveyed to the air inlet (1010) of an independent activated carbon adsorption unit or group of units (101) through a first flue gas transport pipe (La) with the flue gas produced under operating condition B; Conducting one or two independent activated carbon adsorption units or unit groups (101) to the air inlet (10103) through a second flue gas transport pipe (Lb) and the flue gas produced under operating condition C is transferred to the air inlet (10103) of one independent activated carbon adsorption unit or unit group (101). ) is delivered to the air inlet (1010) through a third flue gas transport pipe (LC); The exhaust line (Lex) connected to an activated carbon adsorption unit or unit group (101) that processes the flue gas produced under operating condition A, is connected to a chimney (3), the exhaust lines (Lex) are connected to one or two activated carbons that treat the flue gas produced under operating condition B. Adsorption units or unit groups (101) that treat the flue gas are connected to a chimney (3) and exhaust lines (Lex) connected to an activated carbon adsorption unit or unit group (101) that treats the flue gas are connected to a chimney (3) produced under operating condition C. It is a system according to any one of claims 1 to 5, and its feature is; The first active carbon transport equipment (Pl) and the second active carbon transport equipment (PZ) are belt conveyors; or the first activated carbon conveying equipment (Pl) and the second activated carbon conveying equipment (PZ) are Z-shaped or inverted Z-shaped integrated conveyors, or the first active carbon conveying equipment (Pl) and the second activated carbon conveying equipment (PZ) ), consisting of a plurality of transport devices, respectively; and/or the activated carbon adsorption units or unit group (101) is independently a single-stage activated carbon adsorption unit or unit group or a multi-stage activated carbon adsorption unit or unit group; or connecting the exhaust lines (Lex) connected to the gas outlets (10104) of the 1-n activated carbon adsorption units or unit groups (101) between the n-activated carbon adsorption units or unit groups (101), to a secondary adsorption tower and then secondary adsorption The tower is connected to a gas outlet chimney (3). It is a system according to any one of claims 1 to 6, and its feature is; further comprising a feeding equipment (4) and a discharging equipment (5); There is a feeding equipment (4) at the top of each activated carbon adsorption unit or unit group (101), and the second active carbon transport equipment (P2) is connected to the feeding port (10101) of each activated carbon adsorption unit or unit group (101) with an independent connecting via feeding equipment (4); There is a discharge device (5) at the discharge port (10102) of each activated carbon adsorption unit or unit group (101), and the discharge port of the activated carbon adsorption unit or unit group (101) is connected to the first activated carbon transport equipment through the discharge equipment (5). (Pl) is the connection. It is a central and independent purification method for flue gas with multiple conditions or a method of using this system, according to one of claims 1 to 7, and its feature is; It includes the following steps: 1) An integrated tower in the flue gas treatment system includes n active carbon adsorption unit or unit group (101) and a desorption tower (2); where n activated carbon adsorption units or groups of units (101) are provided independently of each other and in parallel; 2) Flue gases are produced under m operating conditions, the flue gas produced under each operating condition is transported to h active carbon adsorption units or unit groups (101) through flue gas transport pipes (L) and the activated carbon adsorption unit or unit group (101), respectively The flue gas carried through the connected flue gas transport pipe (L) and the flue gas processed by the activated carbon adsorption unit or unit group (101) are discharged from the gas outlet (10104) of the activated carbon adsorption unit or unit group (101); 3) Each activated carbon adsorption unit or group of units (101) carries the activated carbon through a first activated carbon transport equipment (P1), which adsorbs the flue gas from a discharge port to a desorption tower (2); The activated carbon absorbing the flue gas is desorbed and activated in the desorption tower (2) and then discharged from the discharge port of the desorption tower (2) and a second active carbon transport is again sent to the feed port of each activated carbon adsorption unit or unit group (101) where n 2 - becomes 10, or 3-6; Zîmîn; lihî becomes (n-m + 1). It is a method according to claim 8 and its feature is; where n is from the gas outlets (1010) of the activated carbon adsorption unit or unit group (101). 4) the discharged flue gas is discharged from the chimneys (3); here: lîjîn. It is a method according to claim 8 or 9 and its feature is; Specifically, step 3) comprises: h activated carbon adsorption units or groups of units (101) that process the flue gas produced under an operating condition, detect the content of pollutants in the flue gas produced under the operating condition and the flue flow rate detect the flue gas produced under the operating condition obtains the flow rate of contaminants in the flue gas produced under the gas and operating condition; and the flow rate of activated carbon in the activated carbon adsorption unit or unit groups (101) that processes the flue gas produced under the operating condition is determined according to the flow rate of pollutants in the flue gas produced under the operating condition. It is a method according to claim 10 and its feature is; The flow rate of pollutants in the flue gas is calculated according to the flow rate of the flue gas and the content of the pollutants in the flue gas with the following formula: 1-' .(1 where Qsi is the flow rate of the pollutant SOz in the flue gas produced under the operating condition, expressed in kg / hour; Cgi is the content of pollutant 802 in the flue gas produced under operating condition i, mg/Nrn3; 5 QNi is the flow rate of pollutant NOx in the flue gas produced under operating condition i, expressed in kg/h; CNI is the content of pollutant NOx in the flue gas produced under operating condition i, mg/Nm3 is the content of NOX pollutant in the flue gas produced under the operating condition; Vi is the flow rate of the flue gas produced under the operating condition of i, Nm3/hour; and i is the ordinal number of the operating condition, and i = 1 ~ m; 10 is the flow rate of the flue gas produced under the operating condition of each The flow rate of activated carbon in the activated carbon adsorption unit or unit group (101) is determined according to the flow rate of pollutants in the flue gas by the following formula: where Qxi is active carbon in each adsorption unit or unit group (101) that processes the flue gas produced under the operating condition i is the flow rate of carbon, expressed in kg/h; h is the number of activated carbon adsorption units or unit groups (101) that process the flue gas produced under the operating condition i; K1 is constant, usually 15-21; and 20 K2 is constant, usually 3-4. 12. It is a method according to claim 11 and its feature is; The flow rate of activated carbon in the desorption tower (2) is as follows: where Qx is the flow rate of activated carbon in the desorption tower (2), determined in kg / hour; Qxi is the flow rate of activated carbon in each activated carbon adsorption unit or unit group (10 1) processing the flue gas produced under the working condition, expressed in kg/h; Qsupp is the flow rate of activated carbon added to the desorption tower, h expressed in kg/h, i is the number of activated carbon adsorption units or unit groups (100) that process the flue gas produced under the operating condition; and i is the sequence number of the operating condition, i : 1 ~ m. It is a method according to claim 12 and its feature is; According to the flow rate of each activated carbon adsorption unit or unit group (101) that processes the flue gas produced under the working condition, the second activated carbon is transported by the transport equipment (PZ) to each activated carbon adsorption unit or unit group (101) processed under the working condition. controlling activated carbon as Qxi; and a feeding equipment and It is the determination of the flow rate of a discharge equipment. It is a method according to claim 13 and its feature is; The flow rate of the feeding equipment and discharge equipment of each activated carbon adsorption unit or unit group (101) that processes the flue gas produced under the operating condition i is determined according to the following formula: Qiýfecd : Qiý disehu'rge : QXL' X .7 where Qi_feed is the operating condition i is the flow rate of the feeding equipment of each activated carbon adsorption unit or unit group (101) that processes the flue gas produced under it, expressed in kg / hour; Qi_dischargc is the flow rate of each activated carbon adsorption unit or unit group (101) of the discharge equipment processing the flue gas produced under the working condition, expressed in kg/h QXI is the flow rate of each activated carbon adsorption unit processing the flue gas produced under the working condition or is the flow rate of activated carbon in the unit group (101), expressed in kg/h;