阅读说明：本技术 煤气冷凝水收集系统及其改进方法 (Gas condensate water collecting system and improvement method thereof ) 是由 严浩 罗金华 邱利祥 于 2019-10-24 设计创作，主要内容包括：本发明涉及一种煤气冷凝水收集系统及其改进方法,属于钢铁厂污水处理领域。具体包括在煤气管道排水器的下方设置转存箱,利用转存箱收集煤气冷凝水,利用提升机构将转存箱与冷凝水输送管道相连通,将冷凝水输送管道设置在煤气管道的上方,形成煤气管道背负冷凝水输送管道的状态。该方案不需要对厂区进行大规模施工开挖,降低了钢铁厂施工改造的难度,实现了产品的标准化,极大降低了钢铁企业的管理成本。(The invention relates to a coal gas condensate water collecting system and an improvement method thereof, belonging to the field of sewage treatment of steel plants. The method specifically comprises the steps that a transfer storage box is arranged below a gas pipeline drainer, gas condensate water is collected by the transfer storage box, the transfer storage box is communicated with a condensate water conveying pipeline by a lifting mechanism, and the condensate water conveying pipeline is arranged above the gas pipeline to form a state that the gas pipeline bears the condensate water conveying pipeline. According to the scheme, large-scale construction and excavation are not needed to be carried out on a plant area, the difficulty of construction and transformation of the steel plant is reduced, the standardization of products is realized, and the management cost of steel enterprises is greatly reduced.)

1. The coal gas condensate water collecting system comprises a condensate water collector and a condensate water conveying pipeline; the method is characterized in that: the condensed water collector mainly comprises a transfer storage box and a plunger pump, wherein the transfer storage box is correspondingly arranged below the gas pipeline drainer, the drainage end of the gas pipeline drainer is communicated with the inner cavity of the transfer storage box, the water inlet end of the plunger pump is connected with the transfer storage box, the water outlet end of the plunger pump is connected with the water inlet end of a condensed water conveying pipeline, and the condensed water conveying pipeline is carried above the gas pipeline.

2. The gas condensate collection system of claim 1, wherein: the transfer box is buried under the ground, and is provided with a vent pipe communicated with the atmosphere.

3. The gas condensate collection system of claim 2, wherein: the condensed water collector also comprises a pressure gauge, a pipeline filter and a liquid level meter; the pressure gauge and the liquid level gauge are correspondingly arranged in the transfer box, and the pipeline filter is arranged on a pipeline connecting the transfer box and the plunger pump.

4. The gas condensate collection system of claim 3, wherein: the transfer tank and the plunger pump are integrated into a modular integrated structure.

5. The gas condensate collection system of any one of claims 1-4, wherein: the condensed water conveying pipeline is one of a plastic-lined composite steel pipe, a steel wire mesh framework composite pipe or a mesh steel belt polyethylene composite pipe.

6. The gas condensate collection system of claim 5, wherein: along the condensed water conveying direction, a slope not less than 0.1 percent is formed between the condensed water conveying pipeline carried on the gas pipeline and the horizontal plane.

7. The improved method of the coal gas condensate water collecting system is characterized by mainly comprising the following steps:

(1) a transfer storage box is arranged below the gas pipeline drainer correspondingly, and gas condensate water is collected by the transfer storage box;

(2) arranging a condensed water conveying pipeline above the gas pipeline to form a state that the gas pipeline bears the condensed water conveying pipeline;

(3) the transfer storage box is communicated with the condensate water conveying pipeline by utilizing a lifting mechanism, and the coal gas condensate water in the transfer storage box is conveyed into the condensate water conveying pipeline by utilizing the power provided by the lifting mechanism.

8. The improved method of a gas condensate collection system of claim 7, wherein: the transfer box is provided with a liquid level control switch, and the lifting mechanism is provided with a signal remote transmission mechanism, so that the transmission and monitoring of liquid level signals, pressure signals and flow signals are realized.

9. The improved method of a gas condensate collection system of claim 7, wherein: the lifting mechanism adopts a plunger pump which is integrated with the unloading box into a modularized integrated structure.

Technical Field

The invention belongs to the field of sewage treatment of steel plants, and particularly relates to a coal gas condensate water collecting system and an improvement method thereof.

Background

The research shows that: blast furnace gas condensate water and coke oven gas condensate water in the gas condensate water of iron and steel enterprises contain pollutants such as cyanides, volatile phenols and high-concentration chloride ions with different concentrations due to raw material differences.

Under the condition of a more extensive production mode in the past, the part of waste water is ignored and is directly discharged on site or discharged after being treated by general production waste water in a mixed yard, and with the requirements of industrial upgrading and fine clean production, more and more managers realize that the part of waste water has extremely high environmental pollution risk and need to be treated and disposed separately. However, since the distribution of the condensed water of the coal gas in the iron and steel integrated enterprises is wide, a gas pipeline drainer is usually arranged every two hundred meters, and the collection of the dispersed sewage is very difficult.

At present, most enterprises adopt a tank car transportation mode, namely a water collecting pit is arranged near a gas pipeline drainer, and the tank car is used for cleaning and transporting the wastewater in the water collecting pit regularly. The mode has high labor cost and high labor intensity, needs to be provided with a huge amount of tank cars and fleets for transportation, and cannot be applied to the megaton and above iron and steel combination enterprises in China.

The adoption of pipe network transportation has the following problems besides large early investment:

(1) for the current steel and iron united enterprises, the collection of the coal gas condensate water is mostly needed for modification, namely, a new drainage pipe network system is laid under the condition of the existing equipment layout, and the situation that the steel and iron enterprise pipe networks are numerous and most enterprise drawings are lacked is combined, so that the laying of the new plant-wide pipe network system is quite difficult.

(2) The chlorine ions in the gas condensate water have certain corrosivity on the pipeline, cyanide and volatile phenol belong to a class of pollutants, and the gas condensate water is discharged and conveyed at higher risk.

(3) The discharge of the coal gas condensate water is irregular, and the design of the terminal facilities needs to consider the problems of water quantity monitoring, water pump energy saving, spare parts of the terminal facilities of the whole plant and the like.

Disclosure of Invention

In view of this, the present invention provides a gas condensate water collecting system and an improved method thereof, which can monitor and automatically collect wastewater from all gas condensate water generating points in a plant, thereby improving wastewater collecting efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

the coal gas condensate water collecting system comprises a condensate water collector and a condensate water conveying pipeline; the condensed water collector mainly comprises a transfer storage box and a plunger pump, wherein the transfer storage box is correspondingly arranged below the gas pipeline drainer, the drainage end of the gas pipeline drainer is communicated with the inner cavity of the transfer storage box, the water inlet end of the plunger pump is connected with the transfer storage box, the water outlet end of the plunger pump is connected with the water inlet end of a condensed water conveying pipeline, and the condensed water conveying pipeline is carried above the gas pipeline.

Furthermore, the transfer box is buried under the ground, and is provided with a vent pipe communicated with the atmosphere.

Further, the condensed water collector also comprises a pressure gauge, a pipeline filter and a liquid level meter; the pressure gauge and the liquid level gauge are correspondingly arranged in the transfer box, and the pipeline filter is arranged on a pipeline connecting the transfer box and the plunger pump.

Further, the transfer box and the plunger pump are integrated into a modular integrated structure.

Further, the condensed water conveying pipeline is one of a plastic-lined composite steel pipe, a steel wire mesh framework composite pipe or a mesh steel belt polyethylene composite pipe.

Furthermore, along the condensed water conveying direction, a slope not less than 0.1 percent is formed between the condensed water conveying pipeline carried on the gas pipeline and the horizontal plane.

The improved method of the gas condensed water collecting system mainly comprises the following steps:

(1) a transfer storage box is arranged below the gas pipeline drainer correspondingly, and gas condensate water is collected by the transfer storage box;

(2) arranging a condensed water conveying pipeline above the gas pipeline to form a state that the gas pipeline bears the condensed water conveying pipeline;

(3) the transfer storage box is communicated with the condensate water conveying pipeline by utilizing a lifting mechanism, and the coal gas condensate water in the transfer storage box is conveyed into the condensate water conveying pipeline by utilizing the power provided by the lifting mechanism.

Furthermore, a liquid level control switch is arranged on the transfer box, and a signal remote transmission mechanism is arranged on the lifting mechanism, so that the transmission and monitoring of liquid level signals, pressure signals and flow signals are realized.

Further, the lifting mechanism adopts a plunger pump which is integrated with the unloading box into a modularized integrated structure.

The invention has the beneficial effects that:

the scheme utilizes the gas pipeline to bear the condensed water conveying pipeline, namely, the scheme is modified by a mode of obviously arranging an overhead pipeline. On one hand, large-scale construction and excavation of a plant area are not needed, so that the difficulty of construction and transformation of a steel plant is reduced, the pipeline leakage condition is managed and controlled, the remediation is carried out in time, and the risk of conveying the phenol-cyanogen-containing liquid is reduced; on the other hand, the heat of the gas pipeline can also prevent the condensed water from freezing in winter. And adopt standardized plunger pump of low-power as promoting power, integration coal gas comdenstion water lifting means simultaneously, the pressure that has probably produced under having considered "little pipeline long distance low pressure" transport condition is unmatched, pipeline gas collection scheduling problem on the one hand, and on the other hand has realized the standardization of product, through unified spare parts, can greatly reduce iron and steel enterprise's administrative cost.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a condensate collector;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic view of a gas pipeline back condensate conveying pipeline.

Reference numerals:

the device comprises a transfer box-1, a condensate water conveying pipeline-2, a gas pipeline-3 and a plunger pump-4.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 3, an improved method of a gas condensate water collecting system mainly includes the following steps:

(1) investigating and verifying the position of a factory blast furnace gas pipeline drainer, arranging a transfer storage box 1 below the gas pipeline drainer correspondingly, and collecting gas condensate water by using the transfer storage box 1;

(2) the condensed water conveying pipeline 2 is arranged above the gas pipeline 3 in a support or welding mode and the like, so that the gas pipeline 3 bears the condensed water conveying pipeline 2;

(3) the transfer and storage box 1 is communicated with the condensed water conveying pipeline 2 by utilizing a lifting mechanism, and the coal gas condensed water in the transfer and storage box 1 is conveyed into the condensed water conveying pipeline 2 by utilizing the power provided by the lifting mechanism.

(4) According to the distribution condition of the gas pipeline 3 and the condensate water conveying pipelines 2 on the gas pipeline, a collecting water pool is planned to collect the conveyed condensate water from the condensate water conveying pipelines 2, and the collecting water pool can be close to a processing pool of a terminal according to the actual layout condition or directly serve as the processing pool of the terminal.

As a further optimization of the scheme, a liquid level control switch is arranged on the transfer box 1 and comprises a pressure gauge, a liquid level meter and the like, so that the storage capacity and the internal pressure of each transfer box 1 are monitored; meanwhile, a signal remote transmission mechanism is arranged on the lifting mechanism, namely, the signal remote transmission mechanism is communicated with a control center, so that the transmission and monitoring of a liquid level signal, a pressure signal and a flow signal are realized, and the opening, closing and opening amount of the lifting mechanism are adjusted in real time.

As a further optimization of the above solution, the lifting mechanism employs a plunger pump 4, which is integrated with the dump box 1 into a modular integrated structure.

The scheme utilizes the gas pipeline 3 to bear the condensed water conveying pipeline 2, namely, the reconstruction is carried out in a mode of obviously arranging an overhead pipeline. On one hand, large-scale construction and excavation of a plant area are not needed, so that the difficulty of construction and transformation of a steel plant is reduced, the pipeline leakage condition is managed and controlled, the remediation is carried out in time, and the risk of conveying the phenol-cyanogen-containing liquid is reduced; on the other hand, the heat of the gas pipe 3 can also prevent the condensed water from freezing in winter. And adopt standardized plunger pump 4 of low-power as promoting power, integration coal gas comdenstion water lifting means simultaneously, the pressure that has probably produced under having considered "little pipeline long distance low pressure" transport condition is unmatched, pipeline gas collection scheduling problem on the one hand, and on the other hand has realized the standardization of product, through unified spare parts, can greatly reduce the administrative cost of steel enterprise.

The gas condensed water collecting system improved by the method comprises a condensed water collector and a condensed water conveying pipeline 2; the condensed water collector mainly comprises a transfer box 1 and a plunger pump 4, wherein the transfer box 1 is correspondingly arranged below the gas pipeline drainer, the drainage end of the gas pipeline drainer is communicated with the inner cavity of the transfer box 1, the water inlet end of the plunger pump 4 is connected with the transfer box 1, the water outlet end of the plunger pump 4 is connected with the water inlet end of a condensed water conveying pipeline 2, and the condensed water conveying pipeline 2 is carried above the gas pipeline 3 through a support.

The condensed water conveying pipeline 2 is arranged according to the distribution condition of the gas pipeline 3 and the gas pipeline drainer of the iron and steel integrated enterprise, specifically, the condensed water collector is matched with the gas pipeline drainer for use, and the condensed water conveying pipeline 2 is arranged on the gas pipeline 3. The elevation of the top of a transfer storage box 1 in the condensed water collector is lower than the elevation of a water discharge pipe of a gas pipeline drainer, and the transfer storage box is buried underground during installation. Set up the breather pipe on trans-storage case 1 to make trans-storage case 1 communicate with each other with external atmosphere, prevent that airtight circumstances from causing plunger pump 4 not to inhale water, the plunger pump 4 of being equipped with is as comdenstion water hoist mechanism, and plunger pump 4 passes through the outlet pipe and is connected with condensate water pipeline 2.

The condensed water collector also comprises a pressure gauge, a pipeline filter and a liquid level meter; the pressure gauge and the liquid level gauge are correspondingly arranged in the transfer box 1 so as to monitor the storage capacity and the internal pressure of the transfer box 1; the pipe filter sets up on the pipeline of connecting transfer case 1 and plunger pump 4 to the residue in the filtration condensate water prevents to damage plunger pump 4.

With the integrated modularization integral type structure of deposit case 1 and plunger pump 4, not only be convenient for install, can also standardize the product, reduced iron and steel enterprise's administrative cost

The condensed water conveying pipeline 2 is a plastic-lined composite steel pipe, and can also be a steel wire mesh framework composite pipe or a mesh steel belt polyethylene composite pipe so as to eliminate the corrosive effect of chloride ions in condensed water on the pipeline. Preferably, the condensate conveying pipe 2 carried on the gas pipe 3 has a gradient of not less than 0.1% with respect to the horizontal plane in the condensate conveying direction. The mode of laying through the pipeline is with on the back of condensate water pipeline 2 above gas pipeline 3, specifically sets up the support on gas pipeline 3, fixes condensate water pipeline 2 on the support, guarantees condensate water pipeline 2's the slope simultaneously, has not only reduced the transformation degree of difficulty, still is favorable to guaranteeing the smooth and easy nature that the condensate water was carried.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.