Separated-bin type CO catalytic oxidation reactor capable of being regenerated on line

Abstract

The utility model provides a compartment type CO catalytic oxidation reactor capable of regenerating on line, which comprises a catalytic oxidation reactor body, compartment partition plates are vertically arranged in the catalytic oxidation reactor body to divide the catalytic oxidation reactor body into a plurality of mutually independent reaction cabins, and the catalytic oxidation reactor body is respectively connected to a main inlet flue and a main outlet flue through a branch inlet flue and a branch outlet flue; a branch smoke inlet valve and a reaction bin inlet pressure gauge; a smoke outlet valve and a reaction bin outlet pressure gauge are branched; and the desorption gas regeneration system is connected to the branch gas inlet flue and the branch gas outlet flue through a desorption gas main pipeline and is provided with an online desorption switching valve. According to the utility model, the regeneration function can be realized when the catalyst is inactivated, and the activity of the catalyst is recovered. Meanwhile, online regeneration can be realized, and normal operation of the device is not influenced. When the flue gas amount and the flue gas CO concentration change, the optimal operation airspeed can be matched by adjusting the delivery volume of the catalyst module, so that the use efficiency of the catalyst is improved, and the service life of the catalyst is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of CO emission reduction in the metallurgical industry, and in particular relates to an online regenerable compartment-type CO catalytic oxidation reactor. Background Art

[0002] The flue gas from industrial furnaces contains a large amount of CO. The CO catalytic oxidation reactor device promotes the reaction of CO and O in the flue gas through the action of a catalyst, significantly reducing the CO content in the flue gas. In actual operation, because the flue gas contains a large number of components that reduce catalyst activity, these components will adhere to the catalyst surface and pores and gradually accumulate, causing the catalyst to lose efficiency or even become inactivated after long-term use.

[0003] Deactivated catalysts can be regenerated through the degassing system, which takes about 1-2 days. During this time, the reactor cannot operate normally, seriously impacting production. Two reactors can be deployed to provide one for use and one for backup, but this increases investment and floor space.

[0004] When a traditional reactor is undergoing decomposition, the decomposition gas system needs to decompose and regenerate all the catalysts at the same time, which results in a large scale of the decomposition gas system and the consumption of a large amount of energy and materials.

[0005] The flue gas volume, flue gas temperature and CO content in the flue gas will fluctuate to a certain extent. When selecting a reactor, calculations are usually made based on the most unfavorable operating conditions. In actual operation, due to changes in flue gas parameters, the amount of catalyst required for most operating conditions may be very small. Due to the structural characteristics of the reactor, it is usually operated at the maximum catalyst dosage, thereby continuously consuming the service life of the catalyst.

[0006] The flue gas contains dust, ammonium sulfate and other substances that can easily clog the catalyst. These materials can be cleaned through the soot blowing system, but in actual operation, due to fluctuations in operating conditions and other reasons, the catalyst often becomes clogged. At this time, manual cleaning is required. The reactor must be stopped and continuously ventilated and cooled to meet the manual operation requirements. Since this work takes too long, it will seriously affect production. Utility Model Content

[0007] An object of the present invention is to provide a compartment-type CO catalytic oxidation reactor capable of online regeneration, and to provide at least the advantages to be described below.

[0008] Another objective of the present invention is to provide an online regenerable, compartmented CO catalytic oxidation reactor that can regenerate deactivated catalysts and restore their activity. This allows for online regeneration without affecting normal operation. As flue gas volume and flue gas CO concentration fluctuate, the catalyst module loading can be adjusted to optimize the operating space velocity, thereby improving catalyst efficiency and service life.

[0009] The technical solution of the utility model is as follows:

[0010] An online regenerable compartmented CO catalytic oxidation reactor comprising:

[0011] A catalytic oxidation reactor body, in which compartment partitions are vertically arranged to divide the catalytic oxidation reactor body into multiple independent reaction chambers, and the reaction chambers are connected to the main flue gas inlet and the main flue gas outlet through branch flue gas inlets and branch flue gas outlets respectively;

[0012] A branch smoke inlet valve and a reaction chamber inlet pressure gauge are provided on each branch smoke inlet duct;

[0013] A branch smoke outlet valve and a reaction chamber outlet pressure gauge are provided on each branch smoke outlet duct;

[0014] and a regeneration analysis gas system, which is connected to the branch smoke inlets and the branch smoke outlets of the plurality of reaction chambers through an analysis gas main pipeline, and each of the branch smoke inlets and each of the branch smoke outlets is provided with an online analysis switching valve.

[0015] Preferably, in the online regenerable compartment-type CO catalytic oxidation reactor, multiple groups of catalysts are arranged in the reaction chamber from top to bottom, and multiple reaction chamber inspection holes are opened on the side wall of the reaction chamber.

[0016] Preferably, in the online regenerable compartment-type CO catalytic oxidation reactor, the online analysis switching valve, the branch smoke inlet valve, and the branch smoke outlet valve are not opened at the same time.

[0017] Preferably, in the online regenerable compartment-type CO catalytic oxidation reactor, a plurality of reaction compartments are connected in parallel.

[0018] Preferably, in the online regenerable compartment-type CO catalytic oxidation reactor, a flue gas intake sensor, a flue gas intake temperature sensor and a CO content sensor are provided on the main flue gas inlet duct.

[0019] Preferably, in the online regenerable compartment-type CO catalytic oxidation reactor, the branch smoke inlet valve and the branch smoke outlet valve at both ends of each reaction compartment are opened or closed at the same time.

[0020] The utility model has the following beneficial effects:

[0021] The operation of putting multiple reaction chambers into operation and stopping the operation is realized by switching the branch smoke inlet valve and the branch smoke outlet valve; the online analysis operation of multiple reaction chambers is realized by switching the online analysis switching valve.

[0022] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of an embodiment of an online regenerable compartment-type CO catalytic oxidation reactor provided by the utility model. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0025] It should be understood that terms such as “having,” “including,” and “comprising” used herein do not prescribe the existence or addition of one or more other elements or combinations thereof.

[0026] like Figure 1 As shown, the utility model provides an online regenerable compartment-type CO catalytic oxidation reactor, which includes:

[0027] A catalytic oxidation reactor body 1 is provided with a vertical compartment partition 2 therein to divide the catalytic oxidation reactor body 1 into a plurality of independent reaction chambers 3. The reaction chambers 3 are connected to a main flue duct 6 and a main flue duct 7 through branch flue inlets 4 and branch flue outlets 5, respectively.

[0028] A branch smoke inlet valve 8 and a reaction chamber inlet pressure gauge 9 are provided on each branch smoke inlet duct 4;

[0029] A branch smoke outlet valve 10 and a reaction chamber outlet pressure gauge 11 are provided on each branch smoke outlet duct 5;

[0030] and a regeneration analysis gas system 12, which is connected to the branch flue ducts 4 and the branch flue ducts 5 of the plurality of reaction chambers 3 through an analysis gas main pipeline 13, and each branch flue duct 4 and each branch flue duct 5 is provided with an online analysis switching valve 14.

[0031] The reaction chamber inlet pressure gauge and the reaction chamber outlet pressure gauge can detect the catalyst resistance loss under the operating state.

[0032] In one embodiment of the online regenerable compartment-type CO catalytic oxidation reactor provided by the present invention, multiple groups of catalysts are arranged in the reaction chamber 3 from top to bottom, and multiple reaction chamber inspection holes 15 are opened on the side wall of the reaction chamber 3 to realize the functions of inspection, maintenance and replacement of the catalyst.

[0033] In one embodiment of the online regenerable compartment-type CO catalytic oxidation reactor provided by the present invention, the online analysis switching valve 14 and the branch smoke inlet valve 8 and the branch smoke outlet valve 10 are not opened at the same time.

[0034] In one embodiment of the online regenerable compartment-type CO catalytic oxidation reactor provided by the present invention, a plurality of the reaction compartments 3 are connected in parallel and are in a parallel operation state.

[0035] In one embodiment of the online regenerable compartment-type CO catalytic oxidation reactor provided by the present invention, a flue gas intake sensor, a flue gas intake temperature sensor and a CO content sensor are provided on the main flue gas inlet duct 1.

[0036] In one embodiment of the online regenerable compartment-type CO catalytic oxidation reactor provided by the present invention, the branch smoke inlet valve 8 and the branch smoke outlet valve 10 at both ends of each reaction chamber 3 are opened or closed at the same time.

[0037] Through PLC interlocking control, the number of independent units that need to be put into operation is matched according to parameters such as the total flue gas volume, flue gas temperature, and CO content. While meeting the efficiency of the CO catalytic oxidation reaction, the optimal number of units put into operation is matched to achieve the most economical operation effect.

[0038] The independent unit number that needs to be analyzed is determined based on parameters such as the resistance of each independent unit of the catalytic oxidation reactor and the operating efficiency of the catalytic oxidation reactor, and the catalyst is analyzed online through the PLC interlock control of the online analysis switching valve.

[0039] The catalyst has a certain service life. The actual operation time of each independent unit of the catalytic oxidation reactor is recorded by the PLC system. The maximum operation cycle of the catalyst can be increased by adjusting and matching the operation time of each independent unit.

[0040] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. Online regenerable compartment-type CO catalytic oxidation reactor, characterized by: include: A catalytic oxidation reactor body, in which compartment partitions are vertically arranged to divide the catalytic oxidation reactor body into multiple independent reaction chambers, and the reaction chambers are connected to the main flue gas inlet and the main flue gas outlet through branch flue gas inlets and branch flue gas outlets respectively; A branch smoke inlet valve and a reaction chamber inlet pressure gauge are provided on each branch smoke inlet duct; A branch smoke outlet valve and a reaction chamber outlet pressure gauge are provided on each branch smoke outlet duct; and a regeneration analysis gas system, which is connected to the branch smoke inlets and the branch smoke outlets of the plurality of reaction chambers through an analysis gas main pipeline, and each of the branch smoke inlets and each of the branch smoke outlets is provided with an online analysis switching valve.

2. The online regenerable compartment-type CO catalytic oxidation reactor according to claim 1, characterized in that: Multiple groups of catalysts are arranged in the reaction chamber from top to bottom, and multiple reaction chamber inspection holes are opened on the side wall of the reaction chamber.

3. The online regenerable compartment-type CO catalytic oxidation reactor according to claim 2, characterized in that: The online analysis switching valve, the branch smoke inlet valve, and the branch smoke outlet valve are not opened at the same time.

4. The online regenerable compartment-type CO catalytic oxidation reactor according to claim 3, characterized in that: A plurality of the reaction chambers are connected in parallel.

5. The online regenerable compartment-type CO catalytic oxidation reactor according to claim 4, characterized in that: The main smoke inlet duct is provided with a smoke intake sensor, a smoke intake temperature sensor and a CO content sensor.

6. The online regenerable compartment-type CO catalytic oxidation reactor according to claim 5, characterized in that: The branch smoke inlet valves and the branch smoke outlet valves at both ends of each reaction chamber are opened or closed at the same time.

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