Carbon utilization waste heat boiler for cement production line

Abstract

The utility model discloses a cement production line carbon utilization waste heat boiler, and relates to the technical field of waste heat boilers, the cement production line carbon utilization waste heat boiler comprises a steel structure supporting table, a waste heat boiler flue and a waste heat boiler drum, the waste heat boiler flue is fixedly installed on the steel structure supporting table, the waste heat boiler drum is fixedly installed on the top of the steel structure supporting table, and the steel structure supporting table is fixedly installed on the waste heat boiler drum. The top of the waste heat boiler flue is fixedly connected with a membrane type water cooling wall flue, and the bottom of the waste heat boiler flue is fixedly connected with an ash hopper. According to the utility model, through the arrangement of the spring rapping device, accumulated dust on the water-cooled wall of the membrane water-cooled wall flue can be rapped and cleaned by virtue of the spring rapping hammer during working, and accumulated dust on a convection heating surface pipe in the membrane water-cooled wall flue can be cleaned through the arrangement of the fuel gas pulse soot blower during working; through mutual assistance of the two ash removal modes, accumulated ash can be fully removed, the energy utilization efficiency of the boiler is guaranteed, and the problem that manual frequent cleaning and maintenance are needed is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat boiler technical field, concretely relates to a cement production line carbon utilization waste heat boiler. BACKGROUND

[0002] In the cement production line is transformed for carbon enrichment utilization project, carbon enrichment process's carbon rich stove will produce high temperature waste heat flue gas, therefore needs waste heat boiler to handle the flue gas, and waste heat boiler is a kind of boiler using the sensible heat or the heat generated after the combustion of combustible substance in various industrial processes waste gas, waste or waste liquid to heat water, it is usually used in oil or gas combined cycle unit, by utilizing the high temperature flue gas heat of gas turbine exhaust, realizes the energy utilization of high efficiency.

[0003] The high temperature waste heat flue gas generated in the carbon-rich stove contains no N2, mostly CO2, and a small amount of O2 and H2O, which can cause the dust in the flue gas to be very fine and have strong adsorption capacity. The existing waste heat boiler ash removal structure has poor ash removal effect and cannot fully remove the attached dust, which affects the energy utilization efficiency of the waste heat boiler. SUMMARY

[0004] The utility model discloses a cement production line carbon utilization waste heat boiler to solve the problems in the above background.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A cement production line carbon utilization waste heat boiler, comprising a steel structure support table, a waste heat boiler flue and a waste heat boiler drum, the waste heat boiler flue is fixedly installed on the steel structure support table, the waste heat boiler drum is fixedly installed on the top of the steel structure support table, the top of the waste heat boiler flue is fixedly connected with a membrane type water cooling wall flue, the bottom of the waste heat boiler flue is fixedly connected with a dust hopper, a high-temperature superheater tube group is fixedly installed in the inner cavity of the waste heat boiler flue, a low-temperature superheater tube group is fixedly installed below the high-temperature superheater tube group in the inner cavity of the waste heat boiler flue, an evaporator tube group one is fixedly installed below the low-temperature superheater tube group in the inner cavity of the waste heat boiler flue, an evaporator tube group two is fixedly installed below the evaporator tube group one in the inner cavity of the waste heat boiler flue, a coal economizer tube group is fixedly installed below the evaporator tube group two in the inner cavity of the waste heat boiler flue, an oxygen removal evaporator tube group one is fixedly installed below the coal economizer tube group in the inner cavity of the waste heat boiler flue, and an oxygen removal evaporator tube group two is fixedly installed below the oxygen removal evaporator tube group one in the inner cavity of the waste heat boiler flue.

[0007] Preferably, the outer wall of the membrane water-cooled wall flue is provided with a rapping hole, and a spring rapping device is fixedly installed on the outer wall of the membrane water-cooled wall flue, and a rapping working end of the spring rapping device extends into the inner cavity of the membrane water-cooled wall flue through the rapping hole.

[0008] Preferably, a gas pulse soot blower is fixedly installed on the side of the membrane water-cooled wall flue.

[0009] Preferably, six heat receiving surface tube groups are fixedly installed in the membrane water-cooled wall flue, and the tubes of the six heat receiving surface tube groups are arranged in a row.

[0010] Preferably, a water spray desuperheater is arranged at the middle of the high-temperature superheater tube group and the low-temperature superheater tube group.

[0011] Preferably, a deaerator with a distance of 23 meters from the ground is fixedly installed on the steel structure support platform.

[0012] Thanks to the above technical scheme, the present application has the following technical progress compared with the prior art:

[0013] The utility model provides a cement production line carbon utilizes waste heat boiler, in order to solve the problem of poor dust cleaning effect of the dust cleaning structure of existing waste heat boiler. Through the setting of spring rapping device, the accumulated dust on the membrane water-cooled wall flue water-cooled wall can be rapped and cleaned by spring rapping hammer during the working of the spring rapping device, and through the setting of gas pulse soot blower, the accumulated dust on the convection heat receiving surface tube in the membrane water-cooled wall flue can be cleaned during the working of the gas pulse soot blower, and through the mutual assistance of the two dust cleaning modes, the accumulated dust can be fully removed, the utilization efficiency of energy of the boiler is guaranteed, the problem of frequent manual cleaning and maintenance is avoided, and the practicality of the boiler is improved. ACCURACY

[0014] Fig. 1 It is a whole structure schematic view of the utility model;

[0015] Fig. 2 It is a whole side structure schematic view of the utility model;

[0016] Fig. 3 It is a structure schematic view of the membrane water-cooled wall flue and hopper of the utility model;

[0017] Fig. 4 It is a structure schematic view of the waste heat boiler flue of the utility model.

[0018] In the figure: 1, steel structure support platform; 2, waste heat boiler flue; 21, membrane water-cooled wall flue; 22, ash bucket; 23, high-temperature superheater tube group; 24, low-temperature superheater tube group; 25, evaporator tube group one; 26, evaporator tube group two; 27, economizer tube group; 28, deaerating evaporator tube group one; 29, deaerating evaporator tube group two; 3, waste heat boiler drum. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in connection with the embodiments as follows:

[0020] As Figs. 1-4 shown, the utility model provides a cement production line carbon utilizes waste heat boiler, including steel structure support platform 1, waste heat boiler flue 2 and waste heat boiler drum 3, waste heat boiler flue 2 is fixedly installed on steel structure support platform 1, waste heat boiler drum 3 is fixedly installed at the top of steel structure support platform 1, the top of waste heat boiler flue 2 is fixedly connected with membrane water-cooled wall flue 21, the bottom of waste heat boiler flue 2 is fixedly connected with ash bucket 22, the inner chamber of waste heat boiler flue 2 is fixedly installed with high-temperature superheater tube group 23, the inner chamber of waste heat boiler flue 2 is fixedly installed with low-temperature superheater tube group 24 below high-temperature superheater tube group 23, the inner chamber of waste heat boiler flue 2 is fixedly installed with evaporator tube group one 25 below low-temperature superheater tube group 24, the inner chamber of waste heat boiler flue 2 is fixedly installed with evaporator tube group two 26 below evaporator tube group one 25, the inner chamber of waste heat boiler flue 2 is fixedly installed with economizer tube group 27 below evaporator tube group two 26, the inner chamber of waste heat boiler flue 2 is fixedly installed with deaerating evaporator tube group one 28 below economizer tube group 27, the inner chamber of waste heat boiler flue 2 is fixedly installed with deaerating evaporator tube group two 29 below deaerating evaporator tube group one 28, during operation, flue gas will move from top to bottom and pass through membrane water-cooled wall flue 21, high-temperature superheater tube group 23, low-temperature superheater tube group 24, evaporator tube group one 25, evaporator tube group two 26, economizer tube group 27, deaerating evaporator tube group one 28 and deaerating evaporator tube group two 29 respectively, ash bucket 22 is used for discharging the ash in flue gas, the boiler adopts natural circulation mode, open-air vertical arrangement, compact structure, small footprint.

[0021] Further, as Figs. 1-4As shown, the outer wall of the membrane water-cooled wall flue 21 is provided with a rapping hole, and the outer wall of the membrane water-cooled wall flue 21 is fixedly provided with a spring rapping device, and the rapping working end of the spring rapping device extends into the inner cavity of the membrane water-cooled wall flue 21 through the rapping hole, and the side of the membrane water-cooled wall flue 21 is fixedly provided with a gas pulse soot blower, through the setting of the spring rapping device, when it works, the accumulated ash on the water-cooled wall of the membrane water-cooled wall flue 21 can be rapped and cleaned by the spring rapping hammer, through the setting of the gas pulse soot blower, when it works, the accumulated ash on the convection heating surface tube inside the membrane water-cooled wall flue 21 can be cleaned, through the mutual assistance of the two ash removal methods, the accumulated ash can be fully removed, and the utilization efficiency of the energy of the boiler is ensured.

[0022] Further, as shown in the drawings, Figs. 1-4 As shown, six heating surface tube groups are fixedly installed in the membrane water-cooled wall flue 21, the tubes of the six heating surface tube groups are arranged in a row, a water spray desuperheater is arranged at the middle of the high-temperature superheater tube group 23 and the low-temperature superheater tube group 24, and a deaerator with a distance of 23 meters from the ground is fixedly installed on the steel structure support table 1. Through the setting of the water spray desuperheater, the main steam temperature can be adjusted to meet the requirements of the steam turbine on the steam temperature, and the deaerator can be used as a deaerating evaporation heating surface to remove oxygen in the feed water by using low-pressure steam generated by the boiler.

[0023] The working principle of the cement production line carbon waste heat boiler will be described below.

[0024] As shown in the drawings, Figs. 1-4 During operation, the flue gas moves from top to bottom, respectively passing through the membrane water-cooled wall flue 21, the high-temperature superheater tube group 23, the low-temperature superheater tube group 24, the evaporator tube group one 25, the evaporator tube group two 26, the economizer tube group 27, the deaerating evaporator tube group one 28, and the deaerating evaporator tube group two 29, to generate superheated steam for the steam turbine with a generator to generate electricity. By controlling the spring rapping device to work, the accumulated ash on the water-cooled wall of the membrane water-cooled wall flue 21 can be rapped and cleaned by the spring rapping hammer. By controlling the gas pulse soot blower to work, the accumulated ash on the convection heating surface tube inside the membrane water-cooled wall flue 21 can be cleaned.

[0025] It should be pointed out that in the description of the present disclosure, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the present disclosure can be understood according to the specific circumstances.

[0026] The utility model has made the detailed description to the utility model generally above, but can make some modification or improvement to it on the basis of the utility model, and this is obvious to the general skilled person in the technical field. Therefore, the modification or improvement without departing from the utility model's thought spirit, all are within the utility model's protection scope.

Claims

1. A cement production line carbon utilization waste heat boiler, characterized by: The utility model provides a steel structure support platform, waste heat boiler flue and waste heat boiler drum, waste heat boiler flue is fixedly installed on steel structure support platform, waste heat boiler drum is fixedly installed on the top of steel structure support platform, the top of waste heat boiler flue is fixedly connected with membrane type water cooling wall flue, the bottom of waste heat boiler flue is fixedly connected with hopper, high temperature superheater pipe group is fixedly installed in the inner chamber of waste heat boiler flue, low temperature superheater pipe group is fixedly installed below high temperature superheater pipe group in the inner chamber of waste heat boiler flue, evaporator pipe group one is fixedly installed below low temperature superheater pipe group in the inner chamber of waste heat boiler flue, evaporator pipe group two is fixedly installed below evaporator pipe group one in the inner chamber of waste heat boiler flue, economizer pipe group is fixedly installed below evaporator pipe group two in the inner chamber of waste heat boiler flue, deaerator evaporator pipe group one is fixedly installed below economizer pipe group in the inner chamber of waste heat boiler flue, deaerator evaporator pipe group two is fixedly installed below deaerator evaporator pipe group one in the inner chamber of waste heat boiler flue.

2. A cement production line carbon utilization waste heat boiler according to claim 1, characterized in that: The outer wall of the membrane type water cooling wall flue is provided with a knocking hole, and a spring knocking device is fixedly installed on the outer wall of the membrane type water cooling wall flue, and the knocking working end of the spring knocking device extends into the inner cavity of the membrane type water cooling wall flue through the knocking hole.

3. A cement production line carbon utilization waste heat boiler as claimed in claim 1, characterized in that: A gas pulse soot blower is fixedly installed on the side of the membrane type water cooling wall flue.

4. A cement production line carbon utilization waste heat boiler as claimed in claim 1, characterized in that: Six heating surface pipe groups are fixedly installed inside the membrane type water cooling wall flue, and the pipes of the six heating surface pipe groups are arranged in a line.

5. A cement production line carbon utilization waste heat boiler as claimed in claim 1, characterized in that: Water spray attemperators are arranged at the middle of the high temperature superheater pipe group and the low temperature superheater pipe group.

6. A cement production line carbon utilization waste heat boiler as claimed in claim 1, characterized in that: A deaerator is fixedly installed on the steel structure support platform at a distance of 23 meters from the ground.

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