Sludge fluidized bed incineration treatment equipment and desulfurization device thereof

Abstract

The utility model discloses a desulfurization device which comprises a controller, a tail gas detection module and a storage bin, and the tail gas detection module is in communication connection with the controller; the system further comprises a blowing feeding mechanism and a premixing feeding mechanism which are communicated between the discharging end of the storage bin and a hearth of the incinerator in the material conveying direction, the blowing feeding mechanism and the premixing feeding mechanism are connected in parallel, and a blowing feeding assembly is communicated with an air supply device capable of blowing a desulfurizing agent into the hearth of the incinerator. A premixing bin for mixing a desulfurizing agent and sludge is arranged at the discharging end of the premixing feeding assembly, and a discharging opening of the premixing bin communicates with a feeding opening of the incinerator; and the blowing feeding mechanism and the premixing feeding mechanism are respectively in communication connection with the controller. According to the desulfurization device, the furnace feeding mode of the desulfurization agent can be optimized, so that the desulfurization effect in the sludge incineration treatment process of the sludge fluidized bed incineration treatment equipment is better. The utility model further discloses sludge fluidized bed incineration treatment equipment applying the desulfurization device.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge incineration treatment process and its supporting equipment, in particular to a desulfurization device. The utility model also relates to sludge fluidized bed incineration treatment equipment using the desulfurization device. Background Art

[0002] Sludge incineration is a relatively thorough way to dispose of sludge. In recent years, a number of independent sludge incineration projects have been launched in China. They usually use fluidized bed incinerators to incinerate sludge, using the calorific value of the sludge itself for incineration, and are equipped with waste heat boilers to recover heat energy. At the same time, a flue gas treatment system is configured accordingly to ensure that pollutants meet emission standards. Among them, commonly used fluidized bed equipment usually includes bubbling fluidized beds and circulating fluidized beds. In order to further optimize the equipment operation efficiency and waste treatment effect, in actual applications, sludge will be incinerated in coordination with various types of waste such as industrial solid waste and domestic waste to improve the treatment efficiency of various types of waste.

[0003] Generally, the existing flue gas treatment systems mostly adopt post-furnace treatment processes. Since the calorific value of sludge itself is low and the sulfur content in sludge is high, the SO2 concentration in the flue gas generated after sludge incineration is much higher than that of the flue gas generated after general garbage incineration, and the risk of adverse effects on the atmospheric environment is greater.

[0004] Accordingly, in order to reduce the acid corrosion of flue gas generated after sludge incineration, reduce equipment operating costs, and at the same time increase the life of waste heat boilers and flue gas purification equipment, some sludge treatment projects have begun to use the in-furnace limestone desulfurization process implemented in conjunction with the incinerator.

[0005] During the implementation of the existing in-furnace desulfurization technology, the desulfurizer is usually introduced into the furnace by means of a spraying method, that is, lime powder is blown into the incinerator by means of an air flow conveying device such as a blower, so that during the sludge incineration process in the incinerator, the desulfurizer reacts with sulfur-containing substances such as SO2 generated after the sludge incineration, thereby achieving the purpose of reducing the sulfur content in the flue gas generated after the sludge incineration to a level that meets the operating standards.

[0006] However, due to the different properties of the sludge actually treated, or the different types of industrial solid waste or other fuels for co-incineration, the actual operation of using a single blowing operation to blow the desulfurizer into the furnace to participate in the process treatment cannot meet the needs of various types of waste incineration treatment; secondly, due to the different incineration difficulties of different types of sludge, the incineration difficulties of the industrial solid waste or other types of waste co-incinerated with them are also different, and sludge incineration mostly uses a bubbling fluidized bed, and there is no return process in the process. This leads to the desulfurizer being fed directly into the furnace. The residence time of the desulfurizer in the furnace is relatively short, resulting in a short reaction time between the desulfurizer and the sulfur-containing substances in the sludge and flue gas, and the reaction is insufficient and incomplete, resulting in low overall desulfurization treatment efficiency.

[0007] In view of this, how to optimize the way of feeding the desulfurizer into the furnace to achieve better desulfurization effect during the sludge incineration treatment process of the sludge fluidized bed incineration treatment equipment is an important technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0008] The purpose of the utility model is to provide a desulfurization device, which can optimize the way of feeding the desulfurizer into the furnace, so as to achieve a better desulfurization effect during the sludge incineration process of the sludge fluidized bed incineration treatment equipment. Another purpose of the utility model is to provide a sludge fluidized bed incineration treatment equipment using the above desulfurization device.

[0009] In order to solve the above technical problems, the utility model provides a desulfurization device, including a controller, an exhaust gas detection module matched with an incinerator exhaust gas emission device, and a storage bin capable of accommodating a desulfurizer, wherein the exhaust gas detection module is communicatively connected with the controller;

[0010] It also includes a blowing feeding mechanism and a premixing feeding mechanism respectively connected between the discharge end of the storage bin and the furnace of the incinerator along the material conveying direction, the blowing feeding mechanism and the premixing feeding mechanism are connected in parallel with each other, the blowing feeding assembly is connected with an air supply device capable of blowing the desulfurizer into the furnace of the incinerator, the discharge end of the premixing feeding assembly is provided with a premixing bin for mixing the desulfurizer and the sludge, and the discharge port of the premixing bin is connected with the feed port of the incinerator;

[0011] The spray feeding mechanism and the premix feeding mechanism are respectively connected to the controller for communication.

[0012] Preferably, the discharge end of the storage bin is respectively provided with a spray discharge port and a premix discharge port, the premix feeding mechanism comprises a premix control pipeline, a premix weighing device, a premix feeder and the premix bin which are sequentially connected to the downstream of the premix discharge port along the material conveying direction, and the premix weighing device is communicatively connected with the controller;

[0013] The spray feeding mechanism includes a spray material control pipeline, a spray weighing device, a spray feeder and a spray feeding pipeline which are sequentially connected to the downstream of the spray outlet along the material conveying direction, the spray weighing device is communicatively connected to the controller, and the spray feeding pipeline is provided with an injector which can drive the desulfurizer in the spray feeding pipeline into the furnace of the incinerator along with the airflow, and the injector is connected to the downstream of the air supply device along the airflow direction.

[0014] Preferably, the premixing material control pipeline is connected with a premixing plug valve and a premixing rotary valve, and the premixing plug valve and the premixing rotary valve are arranged in sequence along the material conveying direction, and the premixing rotary valve is communicatively connected with the controller.

[0015] Preferably, a premixing feeding pipeline is connected between the premixing feeder and the premixing bin, and a premixing stop valve is connected to the premixing feeding pipeline.

[0016] Preferably, the blowing material control pipeline is connected with a blowing gate valve and a blowing rotary valve, and the blowing gate valve and the blowing rotary valve are arranged in sequence along the material conveying direction, and the blowing rotary valve is communicatively connected with the controller.

[0017] Preferably, the injection feed pipeline is connected with an injection stop valve, and the injector and the injection stop valve are arranged sequentially along the material conveying direction.

[0018] Preferably, a gasification plate connected to the downstream of an external process gas source is provided in the storage bin, the gasification plate is located upstream of the discharge end of the storage bin along the material conveying direction, and the airflow blowing direction of the gasification plate is consistent with the material conveying direction.

[0019] Preferably, a feeding port for introducing a desulfurizing agent and an exhaust pipeline connected to the external environment are provided on the top of the storage bin, and a dust collector is provided on the exhaust pipeline.

[0020] Preferably, the discharge end of the storage bin is located at the bottom of the storage bin, and the spray feeding mechanism and the premixing feeding mechanism are respectively connected to the bottom of the storage bin in a vertical direction.

[0021] The utility model also provides a sludge fluidized bed incineration treatment device, comprising a fluidized bed incinerator, and also comprising a desulfurization device matched with the fluidized bed incinerator, wherein the desulfurization device is the desulfurization device as described in any one of the above items.

[0022] Compared with the above-mentioned background technology, the desulfurization device provided by the utility model, during its operation, the desulfurizer pre-stored in the storage bin is respectively introduced into the injection feeding mechanism and the premixing feeding mechanism through the discharge end of the storage bin. Among them, the desulfurizer introduced into the injection feeding mechanism can be introduced into the furnace of the incinerator together with the air flow sent by the air supply device under the supporting action of the air supply device, so that when the incinerator incinerates the sludge, the desulfurizer can be used to react with sulfur-containing substances such as SO2 in the sludge and the waste gas generated after its incineration to harmlessly treat these sulfur-containing substances, thereby achieving desulfurization treatment of the sludge and the waste gas generated after its incineration; the desulfurizer introduced into the premixing feeding mechanism can be premixed with the sludge in the premixing bin, so that the desulfurizer can be fully mixed and contacted with the sludge to be treated. , so that the desulfurizer and the sulfur-containing substances mixed in the sludge can fully combine and react, thereby greatly improving the desulfurization treatment effect of the desulfurizer on the sludge. After the mixing is completed in the premixing bin, the sludge mixed with the desulfurizer is then passed into the furnace of the incinerator through the feed port of the incinerator to carry out the incineration operation. Since the desulfurizer has been premixed with the sludge, the desulfurizer can be more fully and thoroughly contacted and reacted with sulfur-containing substances such as SO2 in the sludge and the waste gas generated after its incineration during the incineration process, thereby significantly improving the desulfurization treatment efficiency of the sludge and the waste gas generated after its incineration, and optimizing the corresponding sludge desulfurization treatment effect. During the above desulfurization treatment process, the tail gas detection module located at the tail gas emission device of the incinerator can detect the SO2 concentration in the tail gas of the incinerator in real time, and feed back the detection results to the controller. The controller adjusts the amount of desulfurizer sprayed into the furnace of the incinerator through the spray feeding mechanism and the amount of desulfurizer premixed with sludge in the premixing bin through the premixing feeding mechanism according to the feedback, so as to achieve the purpose of adjusting the concentration of sulfur-containing substances in the exhaust gas after the sludge incineration treatment. Specifically, if the concentration of SO2 in the tail gas of the incinerator detected by the tail gas detection module is high, the controller will control the increase of the amount of desulfurizer premixed with sludge in the premixing bin through the premixing feeding mechanism, so that the reaction between the sulfur-containing substances in the sludge and the desulfurizer is more sufficient and thorough through premixing, thereby reducing the SO2 concentration in the tail gas after the incineration of the currently treated sludge, until the concentration of sulfur-containing substances in the tail gas detected in the tail gas detection module meets the production standard requirements under the corresponding working conditions. In this way, the desulfurization device can adjust the supply amount of the desulfurizer for different treatment methods in each feeding mechanism in real time and efficiently according to the concentration of sulfur-containing substances in the exhaust gas, so as to meet the corresponding sludge treatment needs, ensure the desulfurization treatment efficiency for different types of sludge under different operating conditions, and optimize the operating adaptability and desulfurization treatment effect of the desulfurization device.

[0023] In another preferred embodiment of the present invention, the discharge end of the storage bin is respectively provided with a blowing discharge port and a premixing discharge port, the premixing feeding mechanism includes a premixing material control pipeline, a premixing weighing device, a premixing feeder and the premixing bin which are sequentially connected to the downstream of the premixing discharge port along the material conveying direction, and the premixing weighing device is communicatively connected to the controller; the blowing feeding mechanism includes a blowing material control pipeline, a blowing weighing device, a blowing feeder and a blowing feeding pipeline which are sequentially connected to the downstream of the blowing discharge port along the material conveying direction, the blowing weighing device is communicatively connected to the controller, and the blowing feeding pipeline is provided with an injector which can drive the desulfurizer in the blowing feeding pipeline into the furnace of the incinerator along with the airflow, and the injector is connected to the downstream of the air supply device along the airflow direction. The premixing weighing device can weigh the weight of the desulfurizer sent to the downstream device through the premixing feeding mechanism, so as to control the amount of desulfurizer sent to the premixing bin to be premixed with the sludge; while the injection weighing device can weigh the weight of the desulfurizer sent to the downstream device through the injection feeding mechanism, so as to control the amount of desulfurizer blown into the furnace of the incinerator together with the airflow sprayed by the injector. When the equipment is actually running, the controller adjusts the weighing and feeding amount of the desulfurizer at the premixing weighing device and the injection weighing device according to the concentration detection data of SO2 in the exhaust gas fed back by the exhaust gas detection module, so as to match the feeding requirements of the downstream pipeline and the working conditions of the downstream injector or premixing bin, so as to match the sulfur-containing substance treatment requirements of different types of sludge, and meet the desulfurization treatment requirements of sludge and its post-incineration waste gas under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A system layout diagram of a desulfurization device of a sludge fluidized bed incineration treatment equipment provided in a specific implementation manner of the utility model.

[0026] in:

[0027] 10-storage bin; 101-injection outlet; 102-premix outlet; 103-feeding outlet; 104-exhaust pipeline; 105-dust collector; 106-gasification plate; 107-vibrator;

[0028] 11-air supply device; 111-spray material control pipeline; 112-spray weighing device; 113-spray feeder; 114-spray feed pipeline; 115-injector; 116-spray gate valve; 117-spray rotary valve; 118-spray stop valve;

[0029] 12-premixing bin; 121-premixing material control pipeline; 122-premixing weighing device; 123-premixing feeder; 124-premixing plug valve; 125-premixing rotary valve; 126-premixing feeding pipeline; 127-premixing stop valve;

[0030] 13-Expansion joint;

[0031] 20-furnace;

[0032] 30-process gas source;

[0033] 40-Desulfurization agent supply source. DETAILED DESCRIPTION

[0034] The core of the utility model is to provide a desulfurization device, which can optimize the way of feeding the desulfurizer into the furnace, so that the desulfurization effect in the sludge incineration treatment process of the sludge fluidized bed incineration treatment equipment is better; in addition, a sludge fluidized bed incineration treatment equipment using the above-mentioned desulfurization device is also provided.

[0035] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] It should be noted in advance that, in the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, in the present invention, unless otherwise clearly stipulated and limited, a first feature “on” or “under” a second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature therebetween.

[0038] In addition, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] Please refer to Figure 1 .

[0040] In a specific embodiment, the desulfurization device provided by the utility model includes a controller (not shown in the figure), an exhaust gas detection module (not shown in the figure) coordinated with the incinerator exhaust gas emission device, and a storage bin 10 capable of accommodating a desulfurizer, and the exhaust gas detection module is communicatively connected with the controller.

[0041] The desulfurization device also includes a blowing feeding mechanism and a premixing feeding mechanism which are respectively connected between the discharge end of the storage bin 10 and the furnace 20 of the incinerator along the material conveying direction. The blowing feeding mechanism and the premixing feeding mechanism are connected in parallel with each other. The blowing feeding component is connected with an air supply device 11 which can blow the desulfurizer into the furnace 20 of the incinerator. The discharge end of the premixing feeding component is provided with a premixing bin 12 for mixing the desulfurizer and the sludge, and the discharge port of the premixing bin 12 is connected with the feed port of the incinerator; the blowing feeding mechanism and the premixing feeding mechanism are respectively connected to the controller for communication.

[0042] During its operation, the desulfurizer pre-stored in the storage bin 10 is respectively introduced into the injection feeding mechanism and the premixing feeding mechanism through the discharge end of the storage bin 10. Among them, the desulfurizer introduced into the injection feeding mechanism can be introduced into the furnace 20 of the incinerator together with the air flow sent by the air supply device 11 under the supporting effect of the air supply device 11, so that when the incinerator incinerates the sludge sent from the upstream station, the desulfurizer can be used to react with sulfur-containing substances such as SO2 in the sludge and the waste gas generated after its incineration to harmlessly treat these sulfur-containing substances, thereby achieving desulfurization of the sludge and the waste gas generated after its incineration; the desulfurizer introduced into the premixing feeding mechanism can be premixed with the sludge sent from the upstream station in the premixing bin 12, so that the desulfurizer can be treated with the sludge sent from the upstream station. The sludge is fully mixed and contacted, so that the desulfurizer and the sulfur-containing substances mixed in the sludge are fully combined and reacted, thereby greatly improving the desulfurization treatment effect of the desulfurizer on the sludge. After the mixing is completed in the premixing bin 12, the sludge mixed with the desulfurizer is then introduced into the furnace 20 of the incinerator through the feed port of the incinerator to carry out the incineration operation. Since the desulfurizer has been premixed with the sludge, the desulfurizer can be more fully and thoroughly contacted and reacted with sulfur-containing substances such as SO2 in the sludge and the waste gas generated after its incineration during the incineration process, thereby significantly improving the desulfurization treatment efficiency of the sludge and the waste gas generated after its incineration, and optimizing the corresponding sludge desulfurization treatment effect.

[0043] During the above-mentioned desulfurization treatment process, the exhaust gas detection module located at the exhaust gas emission device of the incinerator can detect the SO2 concentration in the exhaust gas of the incinerator in real time, and feed back the detection results to the controller. The controller adjusts the amount of desulfurizer sprayed into the incinerator furnace 20 through the blowing and feeding mechanism and the amount of desulfurizer sent to the premixing bin 12 through the premixing and feeding mechanism and premixed with the sludge based on the feedback, so as to achieve the purpose of adjusting the SO2 concentration in the exhaust gas after sludge incineration treatment.

[0044] Specifically, if the concentration of sulfur-containing substances in the incinerator exhaust gas detected by the exhaust gas detection module is high, the controller will control the increase in the amount of desulfurizer that is sent to the premixing bin 12 through the premixing feeding mechanism and premixed with the sludge, so that the reaction between the sulfur-containing substances in the sludge and the desulfurizer is more sufficient and thorough through premixing, thereby reducing the concentration of sulfur-containing substances in the exhaust gas after the incineration of the currently treated sludge, until the concentration of sulfur-containing substances in the exhaust gas detected in the exhaust gas detection module meets the production standard requirements under the corresponding working conditions. In this way, the desulfurization device can adjust the feeding amount of the desulfurizer for different treatment methods in each feeding mechanism in real time and efficiently according to the concentration of sulfur-containing substances in the exhaust gas, so as to meet the corresponding sludge treatment needs, ensure the desulfurization treatment efficiency of different types of sludge under different working conditions, and optimize the working condition adaptability and desulfurization treatment effect of the desulfurization device.

[0045] Generally, the controller is an electronic computer, and the tail gas detection module uses a gas concentration sensor or other sensors that can sense and detect the concentration of sulfur-containing substances in the tail gas or other similar sensing devices, and the tail gas detection module is arranged on the flue of the incineration system, the chimney or the exhaust pipe and other tail gas emission devices, so that the tail gas detection module can be fully in contact with the tail gas of the incinerator. If the concentration of sulfur-containing substances in the tail gas detected in the tail gas detection module meets the production standard and emission standard requirements under the corresponding working conditions, the current supply amount of desulfurizer in each feeding mechanism can be maintained to maintain the current working state; if conditions permit, it can also be controlled by the controller to appropriately reduce the amount of desulfurizer sent to the premixing bin 12 via the premixing feeding mechanism, so as to reduce the desulfurizer consumption required for the operation of the equipment per unit time when the working conditions permit, and appropriately increase the amount of desulfurizer blown into the incinerator furnace 20 via the blowing feeding mechanism to maintain the concentration of sulfur-containing substances in the tail gas of the incinerator within the allowable range of the corresponding production emission standards.

[0046] It should be pointed out that, specifically in practical applications, the desulfurizer used in this scheme is generally limestone, which usually contains calcium carbonate and calcium oxide. Calcium carbonate will generate calcium oxide under the high-temperature calcination of the incinerator. Accordingly, when limestone is used as a desulfurizer to desulfurize sludge and tail gas after sludge incineration, calcium oxide usually contacts and reacts with sulfur-containing substances mainly SO2, and generates compounds mainly composed of calcium sulfate after the reaction, thereby effectively reducing the concentration of sulfur-containing substances in the tail gas after sludge incineration treatment, thereby achieving the purpose of desulfurizing the sludge and its tail gas after incineration.

[0047] In addition, it should be pointed out that in actual applications, the storage bin 10, the injection feeding mechanism, the premixing feeding mechanism and the pipelines and devices contained or matched therein for conveying the desulfurizer involved in this scheme can be arranged in sequence from top to bottom in the vertical direction and adapted to be connected, so as to utilize the self-weight of the desulfurizer to promote the desulfurizer to move naturally to the downstream pipelines and devices, thereby optimizing the conveying efficiency of the desulfurizer, avoiding siltation or blockage of the desulfurizer in the pipeline and the device chamber, and improving the overall operating efficiency of the desulfurization device accordingly.

[0048] Correspondingly, the discharge end of the storage bin 10 is also located at the bottom of the storage bin 10, and the blowing feeding mechanism and the premixing feeding mechanism are respectively connected to the bottom of the storage bin 10 in the vertical direction, so that the desulfurizer located in the storage bin 10 can smoothly flow into the blowing feeding mechanism and the premixing feeding mechanism by relying on its own gravity.

[0049] Specifically, the discharge ends of the storage bin 10 are respectively provided with a blowing discharge port 101 and a premixing discharge port 102, the premixing feeding mechanism comprises a premixing control pipeline 121, a premixing weighing device 122, a premixing feeder 123 and a premixing bin 12 which are sequentially connected to the downstream of the premixing discharge port 102 along the material conveying direction, and the premixing weighing device 122 is communicatively connected to the controller; the blowing feeding mechanism comprises a blowing control pipeline 111, a blowing weighing device 112, a blowing feeder 113 and a blowing feeding pipeline 114 which are sequentially connected to the downstream of the blowing discharge port 101 along the material conveying direction, the blowing weighing device 112 is communicatively connected to the controller, and the blowing feeding pipeline 114 is provided with an injector 115 which can drive the desulfurizer in the blowing feeding pipeline 114 into the furnace 20 of the incinerator along with the airflow, and the injector 115 is connected to the downstream of the air supply device 11 along the airflow direction.

[0050] The premixing weighing device 122 can weigh the weight of the desulfurizer delivered to the downstream device via the premixing feeding mechanism, so as to control the amount of desulfurizer delivered to the premixing bin 12 for premixing with the sludge; and the injection weighing device 112 can weigh the weight of the desulfurizer delivered to the downstream device via the injection feeding mechanism, so as to control the amount of desulfurizer blown into the incinerator furnace 20 together with the airflow sprayed by the injector 115.

[0051] When the equipment is actually running, the controller adjusts the weighing and feeding amount of the desulfurizer at the premixing weighing device 122 and the injection weighing device 112 according to the concentration detection data of sulfur-containing substances in the exhaust gas fed back by the exhaust gas detection module, so as to match the feeding demand of the downstream pipeline and the working condition requirements of the downstream ejector 115 or the premixing bin 12, thereby matching the sulfur-containing substance treatment requirements of different types of sludge and meeting the desulfurization treatment requirements for sludge and its exhaust gas after incineration under different working conditions.

[0052] Considering the desulfurization agent replenishment problem in practical applications, a feeding port 103 can be provided at the top of the storage bin 10 for an external desulfurization agent supply source 40 to pass the desulfurization agent into the storage bin 10, and an exhaust pipe 104 connected to the external environment can be arranged on the top of the storage bin 10, so that when the desulfurization agent is replenished into the storage bin 10 through the feeding port 103, the gas squeezed by the space occupied by the desulfurization agent in the storage bin 10 can be discharged in time through the exhaust pipe 104, so as to avoid excessive internal pressure in the storage bin 10. A dust collector 105 can be provided on the exhaust pipe 104, so as to timely remove the desulfurization agent or other solid particles mixed in the gas discharged from the storage bin 10 through the exhaust pipe 104, so as to avoid adverse effects on the surrounding atmospheric environment.

[0053] In addition, a gasification plate 106 connected to the downstream of the external process gas source 30 is provided in the storage bin 10. The gasification plate 106 is located upstream of the discharge end of the storage bin 10 along the material conveying direction, and the airflow blowing direction of the gasification plate 106 is consistent with the material conveying direction. The external process gas source 30 can provide sufficient process gas for the gasification plate 106, so that the gasification plate 106 can continuously blow airflow toward the discharge end of the storage bin 10, thereby using these airflows to drive the desulfurizer in the storage bin 10 to be discharged through the discharge end of the storage bin 10, thereby further improving the delivery efficiency of the desulfurizer to the downstream pipelines and devices.

[0054] In conjunction with this, a number of vibrators 107 can be arranged in the storage bin 10. These vibrators 107 can generate structural vibrations spontaneously, thereby driving the shell of the storage bin 10 and the desulfurizer stored therein to vibrate appropriately, thereby promoting the storage state of the desulfurizer in the storage bin 10, and further avoiding the accumulation and blockage of the desulfurizer in the storage bin 10. Considering the device adaptation effect in actual application, the gasification plate 106 is preferably arranged in the lower middle part of the storage bin 10, and each vibrator 107 is arranged on the side wall of the storage bin 10 below the gasification plate 106, so as to obtain the best material matching effect, ensure the smooth conduction of the desulfurizer, and avoid the accumulation and blockage of materials in the storage bin 10.

[0055] Furthermore, the premixing control pipeline 121 is connected with a premixing plug valve 124 and a premixing rotary valve 125, and the premixing plug valve 124 and the premixing rotary valve 125 are arranged in sequence along the material conveying direction, and the premixing rotary valve 125 is connected to the controller in communication. The premixing rotary valve 125 can realize the step-by-step quantitative delivery of the desulfurizer in the premixing control pipeline 121, so that the controller can adjust the amount of desulfurizer sent to the downstream premixing weighing device 122 through the premixing rotary valve 125 in real time through the communication connection with the premixing rotary valve 125, and realize the supply amount control of the desulfurizer sent to the premixing bin 12 to match the corresponding working condition requirements.

[0056] Accordingly, the conduction and cutoff of the premixing control pipeline 121 can be adjusted by controlling the switch of the premixing plug valve 124, so that the premixing feeding mechanism can be cut off from the premixing plug valve 124 when necessary, so as to carry out inspection, maintenance or replacement of the pipeline and device located downstream of the premixing plug valve 124. After the corresponding inspection, maintenance and replacement operations are completed, the premixing plug valve 124 can be reconnected to meet the corresponding working conditions.

[0057] On this basis, a premixing feeder 123 is connected to the premixing bin 12 via a premixing feeder pipeline 126, and a premixing stop valve 127 is connected to the premixing feeder pipeline 126. The premixing stop valve 127 can flexibly control the conduction and cutoff of the premixing feeder pipeline 126, thereby controlling the continuous introduction or stopping of the desulfurizer at the premixing bin 12, so as to match the corresponding working condition requirements.

[0058] On the other hand, the injection control pipeline 111 is connected with the injection gate valve 116 and the injection rotary valve 117, and the injection gate valve 116 and the injection rotary valve 117 are arranged in sequence along the material conveying direction, and the injection rotary valve 117 is connected to the controller in communication. Similar to the function of the premixing rotary valve 125 mentioned above, the injection rotary valve 117 can realize the step-by-step quantitative delivery of the desulfurizer in the injection control pipeline 111, so that the controller can use the communication connection with the injection rotary valve 117 to adjust the amount of desulfurizer sent to the downstream injection weighing device 112 through the injection rotary valve 117 in real time, and realize the control of the supply amount of the desulfurizer blown into the incinerator furnace 20 through the injection feeding mechanism to match the corresponding working condition requirements.

[0059] Corresponding to the premixing gate valve 124 mentioned above, the conduction and cutoff of the blowing control pipeline 111 can be adjusted by controlling the switch of the blowing gate valve 116, so that the blowing feeding mechanism can be cut off from the blowing gate valve 116 when necessary, so as to carry out inspection, maintenance or replacement of the pipelines and devices located downstream of the blowing gate valve 116. After the corresponding inspection, maintenance and replacement operations are completed, the blowing gate valve 116 can be reconnected to meet the corresponding working conditions.

[0060] On this basis, the injection feed pipeline is connected with an injection stop valve 118, and the injector 115 and the injection stop valve 118 are arranged in sequence along the material conveying direction. The injection stop valve 118 can flexibly control the conduction and cutoff of the injection feed pipeline 114, thereby controlling the amount of desulfurizer blown into the incinerator furnace 20 through the injection feed mechanism, so as to match the corresponding working condition requirements.

[0061] It should be particularly noted that, during the actual equipment assembly and adaptation, the airflow carrying the desulfurizer blown out by the blowing and feeding mechanism can be passed into the furnace 20 of the incinerator through the secondary air duct of the incinerator, the air inlet holes opened on the side walls of the furnace wall of the incinerator, the quartz sand inlet of the incinerator, or the return port of the incinerator, to participate in the desulfurization treatment operation during the sludge incineration process. The specific connection position between the exhaust end of the blowing and feeding mechanism and the incinerator can be flexibly selected and adjusted according to the actual working conditions, as long as it can ensure that the desulfurizer can be smoothly blown into the furnace 20 of the incinerator to complete the desulfurization treatment operation and meet the working conditions of the entire sludge incineration process.

[0062] In addition, in practical applications, the air supply device 11 generally uses a Roots blower, which has a simple structure and reliable operation, and can appropriately control the overall use cost of the desulfurization device on the basis of ensuring the adaptation effect and air supply efficiency with the ejector 115. Of course, considering the application requirements under different working conditions, other types of blower equipment can also be used as the specific application of the air supply device 11, and the staff can flexibly select and adjust according to the actual working conditions. In principle, as long as it can meet the actual application needs of the desulfurization device.

[0063] It is not difficult to understand that the injection rotary valve 117 and the premixing rotary valve 125 mentioned in this scheme are both relatively common rotary valve devices in the field of conventional material transportation; the injection weighing device 112 and the premixing weighing device 122 generally use an electronic scale or a similar weighing device with a chamber capable of accommodating the desulfurizer; the injection feeder 113 and the premixing feeder 123 are preferably screw conveyors to ensure smooth and continuous transportation of the desulfurizer and avoid siltation and blockage of the desulfurizer. If necessary, each screw conveyor can also be connected to the controller for communication so that the controller can adjust the feeding rate of each screw conveyor to achieve corresponding adjustments to the desulfurizer supply amount in the downstream pipeline and device, so as to further match the desulfurization treatment operation requirements under different working conditions.

[0064] In addition, it should be noted that, considering the working stability of the equipment under actual working conditions, expansion joints 13 can be installed at necessary positions of each pipeline of the injection feeding mechanism and the premixing feeding mechanism, so as to form reliable directional and circumferential limit and structural protection for the pipeline, and moderately alleviate the axial load of the pipeline, so as to avoid the pipeline from loosening, dislocation or damage due to excessive temperature difference between the internal and external environments, excessive pressure difference between the internal and external spaces, or excessive axial load, so as to ensure the reliable operation of the injection feeding mechanism and the premixing feeding mechanism and the smooth delivery of the desulfurizer.

[0065] In a specific embodiment, the sludge fluidized bed incineration treatment equipment provided by the utility model includes a fluidized bed incinerator, and also includes a desulfurization device that cooperates with the fluidized bed incinerator, and the desulfurization device is the desulfurization device described above. Generally, the desulfurization device is arranged near the fluidized bed incinerator, or arranged at a position that can correspond to the feed end of the fluidized bed incinerator, so as to ensure the structural adaptation effect and process coordination efficiency of the desulfurization device and the fluidized bed incinerator. The desulfurization device of the sludge fluidized bed incineration treatment equipment can optimize the way the desulfurizer enters the furnace, so that the desulfurization effect during the sludge incineration treatment process of the sludge fluidized bed incineration treatment equipment is better.

[0066] In summary, it can be seen that during the operation of the desulfurization device provided in the utility model, the desulfurizer pre-stored in the storage bin is respectively introduced into the injection feeding mechanism and the premixing feeding mechanism through the discharge end of the storage bin. Among them, the desulfurizer introduced into the injection feeding mechanism can be introduced into the furnace of the incinerator together with the air flow sent by the air supply device under the supporting action of the air supply device, so that when the incinerator incinerates the sludge, the desulfurizer can be used to react with sulfur-containing substances such as SO2 in the sludge and the waste gas generated after its incineration to harmlessly treat these sulfur-containing substances, thereby achieving desulfurization of the sludge and the waste gas generated after its incineration; the desulfurizer introduced into the premixing feeding mechanism can be premixed with the sludge in the premixing bin, so that the desulfurizer can be fully mixed and contacted with the sludge to be treated. , so that the desulfurizer and the sulfur-containing substances mixed in the sludge can fully combine and react, thereby greatly improving the desulfurization treatment effect of the desulfurizer on the sludge. After the mixing is completed in the premixing bin, the sludge mixed with the desulfurizer is then passed into the furnace of the incinerator through the feed port of the incinerator to carry out the incineration operation. Since the desulfurizer has been premixed with the sludge, the desulfurizer can be more fully and thoroughly contacted and reacted with sulfur-containing substances such as SO2 in the sludge and the waste gas generated after its incineration during the incineration process, thereby significantly improving the desulfurization treatment efficiency of the sludge and the waste gas generated after its incineration, and optimizing the corresponding sludge desulfurization treatment effect. During the above desulfurization treatment process, the tail gas detection module located at the tail gas emission device of the incinerator can detect the concentration of sulfur-containing substances in the tail gas of the incinerator in real time, and feed back the detection results to the controller. The controller adjusts the amount of desulfurizer sprayed into the furnace of the incinerator through the spray feeding mechanism and the amount of desulfurizer premixed with sludge in the premixing bin through the premixing feeding mechanism according to the feedback, so as to achieve the purpose of adjusting the concentration of sulfur-containing substances in the exhaust gas after the sludge incineration treatment. Specifically, if the concentration of sulfur-containing substances in the tail gas of the incinerator detected by the tail gas detection module is high, the controller will control the increase of the amount of desulfurizer premixed with sludge in the premixing bin through the premixing feeding mechanism, so that the reaction between the sulfur-containing substances in the sludge and the desulfurizer is more sufficient and thorough through premixing, thereby reducing the concentration of sulfur-containing substances in the tail gas after the incineration of the currently treated sludge, until the concentration of sulfur-containing substances in the tail gas detected in the tail gas detection module meets the production standard requirements under the corresponding working conditions. In this way, the desulfurization device can adjust the supply amount of the desulfurizer for different treatment methods in each feeding mechanism in real time and efficiently according to the concentration of sulfur-containing substances in the exhaust gas, so as to meet the corresponding sludge treatment needs, ensure the desulfurization treatment efficiency for different types of sludge under different operating conditions, and optimize the operating adaptability and desulfurization treatment effect of the desulfurization device.

[0067] The utility model also provides a sludge fluidized bed incineration treatment device, whose desulfurization device can optimize the way of feeding the desulfurizer into the furnace, so that the desulfurization effect in the sludge incineration treatment process of the sludge fluidized bed incineration treatment device is better.

[0068] The above is a detailed introduction to the desulfurization device provided by the utility model and the sludge fluidized bed incineration treatment equipment using the desulfurization device. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A desulfurization device, characterized in that: It includes a controller, an exhaust gas detection module matched with an incinerator exhaust gas emission device, and a storage bin capable of accommodating a desulfurizing agent, wherein the exhaust gas detection module is communicatively connected with the controller; It also includes a blowing feeding mechanism and a premixing feeding mechanism respectively connected between the discharge end of the storage bin and the furnace of the incinerator along the material conveying direction, the blowing feeding mechanism and the premixing feeding mechanism are connected in parallel with each other, the blowing feeding mechanism is connected with an air supply device capable of blowing the desulfurizer into the furnace of the incinerator, the discharge end of the premixing feeding mechanism is provided with a premixing bin for mixing the desulfurizer and the sludge, and the discharge port of the premixing bin is connected with the feed port of the incinerator; The spray feeding mechanism and the premix feeding mechanism are respectively connected to the controller for communication.

2. The desulfurization device according to claim 1, characterized in that: The discharge end of the storage bin is respectively provided with a spray discharge port and a premix discharge port, the premix feeding mechanism comprises a premix control pipeline, a premix weighing device, a premix feeder and the premix bin which are sequentially connected to the downstream of the premix discharge port along the material conveying direction, and the premix weighing device is communicatively connected with the controller; The spray feeding mechanism includes a spray material control pipeline, a spray weighing device, a spray feeder and a spray feeding pipeline which are sequentially connected to the downstream of the spray outlet along the material conveying direction, the spray weighing device is communicatively connected to the controller, and the spray feeding pipeline is provided with an injector which can drive the desulfurizer in the spray feeding pipeline into the furnace of the incinerator along with the airflow, and the injector is connected to the downstream of the air supply device along the airflow direction.

3. The desulfurization device according to claim 2, characterized in that: The premixing material control pipeline is connected with a premixing plug valve and a premixing rotary valve, and the premixing plug valve and the premixing rotary valve are arranged in sequence along the material conveying direction, and the premixing rotary valve is communicatively connected with the controller.

4. The desulfurization device according to claim 3, characterized in that: A premixing feeding pipeline is connected between the premixing feeder and the premixing bin, and a premixing stop valve is connected to the premixing feeding pipeline.

5. The desulfurization device according to claim 2, characterized in that: The spray material control pipeline is connected with a spray gate valve and a spray rotary valve, and the spray gate valve and the spray rotary valve are arranged in sequence along the material conveying direction, and the spray rotary valve is communicatively connected with the controller.

6. The desulfurization device according to claim 5, characterized in that: The spray feeding pipeline is connected with a spray stop valve, and the injector and the spray stop valve are arranged in sequence along the material conveying direction.

7. The desulfurization device according to claim 1, characterized in that: The storage bin is provided with a gasification plate connected to the downstream of an external process gas source. The gasification plate is located upstream of the discharge end of the storage bin along the material conveying direction, and the airflow blowing direction of the gasification plate is consistent with the material conveying direction.

8. The desulfurization device according to claim 1, characterized in that: The top of the storage bin is provided with a feeding port for introducing the desulfurizing agent and an exhaust pipeline connected to the external environment, and a dust collector is provided on the exhaust pipeline.

9. The desulfurization device according to claim 1, characterized in that: The discharge end of the storage bin is located at the bottom of the storage bin, and the spray feeding mechanism and the premixing feeding mechanism are respectively connected to the bottom of the storage bin in a vertical direction.

10. A sludge fluidized bed incineration treatment equipment, comprising a fluidized bed incinerator, characterized in that: It also includes a desulfurization device that cooperates with the fluidized bed incinerator, and the desulfurization device is the desulfurization device as described in any one of claims 1 to 9.

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