Jacket heat preservation flame arrester for high-oxygen VOCs (volatile organic compounds) entering dry quenching

Abstract

The utility model discloses a jacket heat preservation flame arrester for high-oxygen VOCs (volatile organic compounds) to enter dry quenching, which belongs to the technical field of flame arresters and comprises two valve bodies respectively communicated with a gas pipeline for the VOCs to enter the dry quenching and a flame arresting screen arranged between the two valve bodies, a jacket capable of introducing steam to preserve heat is arranged between the two valve bodies, and the two valve bodies are communicated with a gas pipeline for the VOCs to enter the dry quenching. The jacket is arranged on the outer side of the fire-retardant screen; a jacket inlet communicated with a steam pipeline is formed in one side of the jacket, and a jacket outlet communicated with a drain pipeline is formed in the other side of the jacket. According to the utility model, the temperature around the fire-retardant screen can be ensured not to be lower than the crystallization temperature of naphthalene gas, so that the naphthalene gas in VOCs gas can smoothly pass through the fire arrester and then enters dry quenching for incineration, and the VOCs are really discharged without external emission.

Description

Technical Field

[0001] This utility model relates to the field of flame arrester technology, and in particular to a jacketed heat preservation flame arrester for dry quenching of high oxygen VOCs. Background Technology

[0002] VOCs (volatile organic compounds) refer to organic compounds with a saturated vapor pressure greater than 133.32 Pa at room temperature and a boiling point between 50 and 260 °C at normal pressure, or any volatile organic solid or liquid at room temperature and pressure.

[0003] In existing technology, ordinary pipeline flame arresters are installed between the pipelines of high-oxygen VOCs generated during the coking process and the dry quenching system. When the temperature drops to 17 degrees Celsius in mid-to-late October each year, the naphthalene gas in the VOCs gas turns into naphthalene crystals and blocks the flame arrester's flame arrester screen. As a result, the VOCs gas cannot be sent into the dry quenching system for combustion through the pipeline flame arrester. Instead, it can only be emitted into the atmosphere after being adsorbed by molecular sieves. Although most of the harmful substances are adsorbed by molecular sieves, the odor in the emitted gas is still present, which seriously affects the air quality and human health at the site.

[0004] Therefore, it is necessary to develop a jacketed heat preservation flame arrestor for dry quenching of high-oxygen VOCs to solve the above-mentioned technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a jacketed heat preservation flame arrester for high oxygen VOCs entering dry quenching coke, which can ensure that the temperature around the flame arrester screen is not lower than the crystallization temperature of naphthalene gas, so that naphthalene gas in VOCs can pass smoothly through the flame arrester and enter the dry quenching coke for combustion, thus realizing true zero external emission of VOCs.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A jacketed heat preservation flame arrester for dry quenching of high-oxygen VOCs includes two valve bodies respectively connected to gas pipelines for dry quenching of VOCs and a flame arresting screen disposed between the two valve bodies. A jacket capable of allowing steam to be introduced for heat preservation is disposed between the two valve bodies, and the jacket is disposed outside the flame arresting screen.

[0008] A further improvement of this utility model is that: one side of the jacket is provided with a jacket inlet connected to a steam pipeline, and the other side is provided with a jacket outlet connected to a drain pipeline.

[0009] A further improvement of this utility model is that both the jacket inlet and the jacket outlet are provided with 3 / 4 internal threads.

[0010] A further improvement of this utility model is that flanges are provided at both ends of the two valve bodies, and the two valve bodies are connected by a number of bolts.

[0011] A further improvement of this utility model is that the outer diameter D of the jacketed heat-insulating flame arrester is 1025mm.

[0012] A further improvement to the technical solution of this utility model is that the diameter DN of both valve bodies is 800mm.

[0013] A further improvement of this utility model is that the flame-retardant screen, the jacket, and the two valve bodies are all made of 316L stainless steel.

[0014] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0015] This invention, by setting a jacket outside the flame arrestor screen that allows steam to pass through, ensures that the overall temperature of the flame arrestor is above 70 degrees Celsius. This prevents naphthalene gas in VOCs from turning into naphthalene crystals and clogging the flame arrestor screen, allowing naphthalene gas in VOCs to pass smoothly through the flame arrestor and enter the dry quenching coke incineration, thus achieving true zero external emission of VOCs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a jacketed heat-insulating flame arrester for dry quenching of high-oxygen VOCs provided in this embodiment of the utility model.

[0018] Among them, 1. Valve body; 2. Flame arrestor screen; 3. Jacket. Detailed Implementation

[0019] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0023] like Figure 1 As shown, a jacketed heat preservation flame arrester for dry quenching of high-oxygen VOCs includes two valve bodies 1 connected to gas pipelines for dry quenching of VOCs and a flame arresting screen 2 disposed between the two valve bodies 1. A jacket 3, which allows steam to be introduced for heat preservation, is disposed between the two valve bodies 1 and is disposed outside the flame arresting screen 2.

[0024] Furthermore, such as Figure 1 As shown, one side of the jacket 3 is provided with a jacket inlet connected to the steam pipeline, and the other side is provided with a jacket outlet connected to the drain pipeline. High-temperature steam enters the jacket 3 from the jacket inlet. After cooling inside the jacket 3, the steam flows out from the jacket outlet to the drain pipeline. This ensures that the overall temperature of the flame arrester is above 70 degrees Celsius, preventing naphthalene gas in the VOCs from turning into naphthalene crystals and clogging the flame arrester's flame arrestor screen 2. This allows the naphthalene gas in the VOCs to pass smoothly through the flame arrester and enter the dry quenching coke incineration, achieving true zero external emission of VOCs.

[0025] Furthermore, such as Figure 1 As shown, both the jacket inlet and outlet are equipped with 3 / 4 internal threads. This feature facilitates the connection of steam lines, drain lines, and jacket 3.

[0026] Furthermore, such as Figure 1As shown, flanges are installed at both ends of the two valve bodies 1, and the two valve bodies 1 are connected by several bolts. The other end of each valve body 1 is connected to a gas pipeline through which high-oxygen VOCs gas is introduced by bolts. This effectively ensures the tightness of the pipeline connection.

[0027] Furthermore, such as Figure 1 As shown, the outer diameter D of the jacketed heat-insulating flame arrester is 1025mm; D1 is 950mm; D2 is 898mm; the length L and height H of the jacketed heat-insulating flame arrester can be set according to the actual site conditions.

[0028] Furthermore, such as Figure 1 As shown, the diameter DN of the two valve bodies 1 is 800mm. High-oxygen VOCs gas passes through the diameter DN of the two valve bodies 1. After passing through the flame arrestor screen 2, the high-oxygen VOCs gas enters the dry quenching coke system for combustion.

[0029] Furthermore, such as Figure 1 As shown, the two valve bodies 1, the flame arrestor screen 2, and the jacket 3 are all made of 316L stainless steel.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A jacketed heat-insulating flame arrester for dry quenching of high-oxygen VOCs, comprising two valve bodies (1) respectively connected to a gas pipeline for dry quenching of VOCs and a flame-arresting screen (2) disposed between the two valve bodies (1), characterized in that: A jacket (3) that allows steam to be introduced for heat preservation is provided between the two valve bodies (1), and the jacket (3) is located on the outside of the flame-retardant screen (2).

2. The jacketed heat-insulating flame arrester for dry quenching of high-oxygen VOCs as described in claim 1, characterized in that: The jacket (3) has a jacket inlet connected to a steam pipeline on one side and a jacket outlet connected to a drain pipeline on the other side.

3. The jacketed heat-insulating flame arrester for dry quenching of high-oxygen VOCs as described in claim 2, characterized in that: Both the jacket inlet and the jacket outlet are provided with 3 / 4 internal threads.

4. The jacketed heat-insulating flame arrester for dry quenching of high-oxygen VOCs as described in claim 1, characterized in that: Flanges are provided at both ends of the two valve bodies (1), and the two valve bodies (1) are connected by several bolts.

5. A jacketed heat-insulating flame arrester for dry quenching of high-oxygen VOCs as described in claim 1, characterized in that: The outer diameter D of the jacketed heat-insulating flame arrester is 1025mm.

6. The jacketed heat-insulating flame arrester for dry quenching of high-oxygen VOCs according to claim 1, characterized in that: Both valve bodies (1) have a diameter DN of 800mm.

7. A jacketed heat-insulating flame arrester for dry quenching of high-oxygen VOCs as described in claim 1, characterized in that: The flame-retardant screen (2), the jacket (3), and the two valve bodies (1) are all made of 316L stainless steel.

Images